1 Immediately after a router completes its boot sequence, the network administrator wants to check the routers configuration. From privileged EXEC mode, which of the following commands can the administrator use for this purpose? (Choose two.)
show flash
show NVRAM
=show startup-config
=show running-config
show version
2 Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
show running-config
show startup-config
=show interfaces
show ip route
show version
show memory
3 Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
enable password class
line console 0
password ccna
enable secret cisco
enable password class
line console 0
password ccna
enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0
enable password class
line console 0
password ccna
enable secret cisco
enable password 7 14141E0A1F17
line console 0
password 7 020507550A
enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0
enable password 7 14141E0A1F17
line console 0
password 7 020507550A
4 Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?
RouterB(config)# enable secret class
RouterB(config)# line vty 0 4
RouterB(config-if)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0 2
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
5 The connection between routers B and C has been successfully tested. However, after rebooting router C, the administrator noticed the response time between networks 10.10.3.0 and 10.10.4.0 is slower. Ping between the two routers is successful. A trace route indicates three hops from router B to router C. What else can be done to troubleshoot the problem?
Ping router B S0/1 connection from router C.
Trace the connection between router B to router C S0/1.
Issue a show ip route command in router B to verify routing is enabled.
=Issue a show ip interface brief command on router C.
6 What command is used to change the default router name to Fontana?
Router# name Fontana
Router# hostname Fontana
Router(config)# name Fontana
=Router(config)# hostname Fontana
7 The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
=Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
=Sydney(config-if)# no shutdown
Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
=Sydney(config-if)# clock rate 56000
Sydney(config-if)# ip host Melbourne 201.100.53.2
8 Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address 192.168.2.2 represent?
Gateway for the 192.168.1.0 network
Gateway for the 192.168.3.0 network
IP assigned to the serial port on Router A
=IP assigned to the serial port on Router B
9 Refer to the exhibit. What additional command is required to allow remote access to this switch from hosts outside the local network?
NA-SW1(config-if)# no shutdown
NA-SW1(config)# enable password password
=NA-SW1(config)# ip default-gateway address
NA-SW1(config-if)# description description
10 In a Cisco device, where is the IOS file stored prior to system startup?
RAM
ROM
=Flash
NVRAM
11 When network services fail, which port is most often used to access a router for management purposes?
AUX
Ethernet
=Console
Telnet
SSH
12 A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?
Telnet
Console
AUX
=SSH
13 In a Cisco router, when do changes made to the running-configuration take effect?
after a system restart
=as the commands are entered
when logging off the system
when the configuration is saved to the startup-configuration
14 Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)
line configuration mode
user executive mode
global configuration mode
=privileged executive mode
interface configuration mode
=enable mode
15 Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)
=hot keys
context-check
=context-sensitive
structured check
command override
=command syntax check
16 Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?
Ctrl-C
Ctrl-P
Ctrl-R
=Ctrl-Shift-6
Ctrl-Z
17 Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?
UBAMA# configure terminal
UBAMA(config)# line vty 0 4
UBAMA(config)# line console 0
UBAMA(config)# interface Serial 0/0/0
=UBAMA(config)# interface FastEthernet 0/1
18 On a Cisco router, which interface would be used to make the initial configuration?
Scoring Rule For: correctness of response
2 points for Option 2
0 points for any other option
Max Value = 2
19 Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)
The host A is turned off.
The Fa0/0 interface on Dallas is shutdown.
The LAN cable is disconnected from host B.
=The S0/0/1 IP address of Dallas is improperly configured.
The Fa0/0 interface on Dallas is in a different subnet than host B.
=The clock rate is missing on the serial link between Dallas and NYC.
show flash
show NVRAM
=show startup-config
=show running-config
show version
2 Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
show running-config
show startup-config
=show interfaces
show ip route
show version
show memory
3 Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
enable password class
line console 0
password ccna
enable secret cisco
enable password class
line console 0
password ccna
enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0
enable password class
line console 0
password ccna
enable secret cisco
enable password 7 14141E0A1F17
line console 0
password 7 020507550A
enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0
enable password 7 14141E0A1F17
line console 0
password 7 020507550A
4 Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?
RouterB(config)# enable secret class
RouterB(config)# line vty 0 4
RouterB(config-if)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0 2
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
5 The connection between routers B and C has been successfully tested. However, after rebooting router C, the administrator noticed the response time between networks 10.10.3.0 and 10.10.4.0 is slower. Ping between the two routers is successful. A trace route indicates three hops from router B to router C. What else can be done to troubleshoot the problem?
Ping router B S0/1 connection from router C.
Trace the connection between router B to router C S0/1.
Issue a show ip route command in router B to verify routing is enabled.
=Issue a show ip interface brief command on router C.
6 What command is used to change the default router name to Fontana?
Router# name Fontana
Router# hostname Fontana
Router(config)# name Fontana
=Router(config)# hostname Fontana
7 The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
=Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
=Sydney(config-if)# no shutdown
Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
=Sydney(config-if)# clock rate 56000
Sydney(config-if)# ip host Melbourne 201.100.53.2
8 Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address 192.168.2.2 represent?
Gateway for the 192.168.1.0 network
Gateway for the 192.168.3.0 network
IP assigned to the serial port on Router A
=IP assigned to the serial port on Router B
9 Refer to the exhibit. What additional command is required to allow remote access to this switch from hosts outside the local network?
NA-SW1(config-if)# no shutdown
NA-SW1(config)# enable password password
=NA-SW1(config)# ip default-gateway address
NA-SW1(config-if)# description description
10 In a Cisco device, where is the IOS file stored prior to system startup?
RAM
ROM
=Flash
NVRAM
11 When network services fail, which port is most often used to access a router for management purposes?
AUX
Ethernet
=Console
Telnet
SSH
12 A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?
Telnet
Console
AUX
=SSH
13 In a Cisco router, when do changes made to the running-configuration take effect?
after a system restart
=as the commands are entered
when logging off the system
when the configuration is saved to the startup-configuration
14 Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)
line configuration mode
user executive mode
global configuration mode
=privileged executive mode
interface configuration mode
=enable mode
15 Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)
=hot keys
context-check
=context-sensitive
structured check
command override
=command syntax check
16 Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?
Ctrl-C
Ctrl-P
Ctrl-R
=Ctrl-Shift-6
Ctrl-Z
17 Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?
UBAMA# configure terminal
UBAMA(config)# line vty 0 4
UBAMA(config)# line console 0
UBAMA(config)# interface Serial 0/0/0
=UBAMA(config)# interface FastEthernet 0/1
18 On a Cisco router, which interface would be used to make the initial configuration?
Scoring Rule For: correctness of response
2 points for Option 2
0 points for any other option
Max Value = 2
19 Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)
The host A is turned off.
The Fa0/0 interface on Dallas is shutdown.
The LAN cable is disconnected from host B.
=The S0/0/1 IP address of Dallas is improperly configured.
The Fa0/0 interface on Dallas is in a different subnet than host B.
=The clock rate is missing on the serial link between Dallas and NYC.
1 Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic.
/24
=/16
/20
=/27
/25
/28
2 Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)
172.16.4.127 /26
=172.16.4.155 /26
=172.16.4.193 /26
172.16.4.95 /27
172.16.4.159 /27
=172.16.4.207 /27
3 Which statements are true regarding IP addressing? (Choose two.)
NAT translates public addresses to private addresses destined for the Internet.
Only one company is allowed to use a specific private network address space.
=Private addresses are blocked from public Internet by router.
Network 172.32.0.0 is part of the private address space.
=IP address 127.0.0.1 can be used for a host to direct traffic to itself.
4 Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?
binary adding
hexadecimal anding
binary division
binary multiplication
=binary ANDing
5 Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?
The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
=The default gateway is on a different subnet from the host.
6 What subnet mask would a network administrator assign to a network address of 172.30.1.0 if it were possible to have up to 254 hosts?
255.255.0.0
=255.255.255.0
255.255.254.0
255.255.248.0
7 Which three IP addresses are private? (Choose three.)
172.168.33.1
=10.35.66.70
=192.168.99.5
=172.18.88.90
192.33.55.89
172.35.16.5
8 Given the IP address and subnet mask of 172.16.134.64 255.255.255.224, which of the following would describe this address?
This is a useable host address.
This is a broadcast address.
=This is a network address.
This is not a valid address.
9 A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
172.16.0.0
172.16.192.0
172.16.192.128
=172.16.192.160
172.16.192.168
172.16.192.176
10 Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server's properties to allow connectivity to the network?
IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.39
IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.33
=IP address: 192.168.10.38 subnet mask: 255.255.255.248 default gateway: 192.168.10.33
IP address: 192.168.10.39 subnet mask: 255.255.255.248 default gateway: 192.168.10.31
IP address: 192.168.10.254 subnet mask: 255.255.255.0 default gateway: 192.168.10.1
11 Which of the following network devices are recommended to be assigned static IP addresses? (Choose three.)
LAN workstations
=servers
=network printers
=routers
remote workstations
laptops
12 Which of the following are features of IPv6? (Choose three.)
=larger address space
faster routing protocols
=data types and classes of service
=authentication and encryption
improved host naming conventions
same addressing scheme as IPv4
13 What is the primary reason for development of IPv6?
security
header format simplification
=expanded addressing capabilities
addressing simplification
14 What two things will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away? (Choose two.)
=The router will discard the packet.
The router will decrement the TTL value and forward the packet to the next router on the path to the destination host.
=The router will send a time exceeded message to the source host.
The router will increment the TTL value and forward the packet to the next router on the path to the destination host.
The router will send an ICMP Redirect Message to the source host.
15 Refer to the exhibit. Why would the response shown be displayed after issuing the command ping 127.0.0.1 on a PC?
The IP settings are not properly configured on the host.
=Internet Protocol is not properly installed on the host.
There is a problem at the physical or data link layer.
The default gateway device is not operating.
A router on the path to the destination host has gone down.
16 How many bits make up an IPv4 address?
128
64
48
=32
17 Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?
The router has an incorrect gateway.
Host A has an overlapping network address.
Host A has an incorrect default gateway configured.
Host A has an incorrect subnet mask.
=NAT is required for the host A network.
18 What three facts are true about the network portion of an IPv4 address? (Choose three.)
identifies an individual device
=is identical for all hosts in a broadcast domain
is altered as packet is forwarded
=varies in length
=is used to forward packets
uses flat addressing
19 What is a group of hosts called that have identical bit patterns in the high order bits of their addresses?
an internet
=a network
an octet
a radix
20 What is the network address of the host 172.25.67.99 /23 in binary?
10101100. 00011001.01000011.00000000
10101100. 00011001.01000011.11111111
=10101100. 00011001.01000010.00000000
10101100. 00011001.01000010.01100011
10101100. 00010001.01000011. 01100010
10101100. 00011001.00000000.00000000
21 Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?
255.255.255.248
255.255.255.224
=255.255.255.192
255.255.255.240
255.255.255.128
255.255.255.252
/24
=/16
/20
=/27
/25
/28
2 Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)
172.16.4.127 /26
=172.16.4.155 /26
=172.16.4.193 /26
172.16.4.95 /27
172.16.4.159 /27
=172.16.4.207 /27
3 Which statements are true regarding IP addressing? (Choose two.)
NAT translates public addresses to private addresses destined for the Internet.
Only one company is allowed to use a specific private network address space.
=Private addresses are blocked from public Internet by router.
Network 172.32.0.0 is part of the private address space.
=IP address 127.0.0.1 can be used for a host to direct traffic to itself.
4 Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?
binary adding
hexadecimal anding
binary division
binary multiplication
=binary ANDing
5 Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?
The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
=The default gateway is on a different subnet from the host.
6 What subnet mask would a network administrator assign to a network address of 172.30.1.0 if it were possible to have up to 254 hosts?
255.255.0.0
=255.255.255.0
255.255.254.0
255.255.248.0
7 Which three IP addresses are private? (Choose three.)
172.168.33.1
=10.35.66.70
=192.168.99.5
=172.18.88.90
192.33.55.89
172.35.16.5
8 Given the IP address and subnet mask of 172.16.134.64 255.255.255.224, which of the following would describe this address?
This is a useable host address.
This is a broadcast address.
=This is a network address.
This is not a valid address.
9 A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
172.16.0.0
172.16.192.0
172.16.192.128
=172.16.192.160
172.16.192.168
172.16.192.176
10 Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server's properties to allow connectivity to the network?
IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.39
IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.33
=IP address: 192.168.10.38 subnet mask: 255.255.255.248 default gateway: 192.168.10.33
IP address: 192.168.10.39 subnet mask: 255.255.255.248 default gateway: 192.168.10.31
IP address: 192.168.10.254 subnet mask: 255.255.255.0 default gateway: 192.168.10.1
11 Which of the following network devices are recommended to be assigned static IP addresses? (Choose three.)
LAN workstations
=servers
=network printers
=routers
remote workstations
laptops
12 Which of the following are features of IPv6? (Choose three.)
=larger address space
faster routing protocols
=data types and classes of service
=authentication and encryption
improved host naming conventions
same addressing scheme as IPv4
13 What is the primary reason for development of IPv6?
security
header format simplification
=expanded addressing capabilities
addressing simplification
14 What two things will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away? (Choose two.)
=The router will discard the packet.
The router will decrement the TTL value and forward the packet to the next router on the path to the destination host.
=The router will send a time exceeded message to the source host.
The router will increment the TTL value and forward the packet to the next router on the path to the destination host.
The router will send an ICMP Redirect Message to the source host.
15 Refer to the exhibit. Why would the response shown be displayed after issuing the command ping 127.0.0.1 on a PC?
The IP settings are not properly configured on the host.
=Internet Protocol is not properly installed on the host.
There is a problem at the physical or data link layer.
The default gateway device is not operating.
A router on the path to the destination host has gone down.
16 How many bits make up an IPv4 address?
128
64
48
=32
17 Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?
The router has an incorrect gateway.
Host A has an overlapping network address.
Host A has an incorrect default gateway configured.
Host A has an incorrect subnet mask.
=NAT is required for the host A network.
18 What three facts are true about the network portion of an IPv4 address? (Choose three.)
identifies an individual device
=is identical for all hosts in a broadcast domain
is altered as packet is forwarded
=varies in length
=is used to forward packets
uses flat addressing
19 What is a group of hosts called that have identical bit patterns in the high order bits of their addresses?
an internet
=a network
an octet
a radix
20 What is the network address of the host 172.25.67.99 /23 in binary?
10101100. 00011001.01000011.00000000
10101100. 00011001.01000011.11111111
=10101100. 00011001.01000010.00000000
10101100. 00011001.01000010.01100011
10101100. 00010001.01000011. 01100010
10101100. 00011001.00000000.00000000
21 Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?
255.255.255.248
255.255.255.224
=255.255.255.192
255.255.255.240
255.255.255.128
255.255.255.252
1 Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
Presentation
Transport
Data Link
=Physical
2 An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
light injector
=OTDR
TDR
multimeter
3 Which characteristics describe fiber optic cable? (Choose two.)
=It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
=It is the most expensive type of LAN cabling.
4 When is a straight-through cable used in a network?
when connecting a router through the console port
when connecting one switch to another switch
=when connecting a host to a switch
when connecting a router to another router
5 Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
coax cable
rollover cable
=crossover cable
straight-through cable
6 Which method of signal transmission uses radio waves to carry signals?
electrical
optical
=wireless
acoustic
7 In most business LANs, which connector is used with twisted-pair networking cable?
BNC
RJ-11
=RJ-45
Type F
8 Which of the following is a characteristic of single-mode fiber-optic cable?
generally uses LEDs as the light source
relatively larger core with multiple light paths
less expensive than multimode
=generally uses lasers as the light source
9 Which type of cable run is most often associated with fiber-optic cable?
=backbone cable
horizontal cable
patch cable
work area cable
10 What are three measures of data transfer? (Choose three.)
=goodput
frequency
amplitude
=throughput
crosstalk
=bandwidth
11 With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
=the magnetic field around the adjacent pairs of wire
the use of braided wire to shield the adjacent wire pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media simultaneously
12 What is a primary role of the Physical layer in transmitting data on the network?
=create the signals that represent the bits in each frame on to the media
provide physical addressing to the devices
determine the path packets take through the network
control data access to the media
13 In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?
coax
=fiber
Cat5e UTP
Cat6 UTP
STP
14 What is a possible effect of improperly applying a connector to a network cable?
Data will be forwarded to the wrong node.
=Data transmitted through that cable may experience signal loss.
An improper signaling method will be implemented for data transmitted on that cable.
The encoding method for data sent on that cable will change to compensate for the improper connection.
15 Which fiber connector supports full duplex Ethernet?
Scoring Rule For: correctness of response
2 points for Option 3
0 points for any other option
Max Value = 2
16 What is considered a benefit of wireless as a media choice?
=more host mobility
lower security risks
reduced susceptibility to interference
less impact of the surroundings on the effective coverage area
17 What characteristic of UTP cable helps reduce the effects of interference?
the metal braiding in the shielding
the reflective cladding around core
=the twisting of the wires in the cable
the insulating material in the outer jacket
Presentation
Transport
Data Link
=Physical
2 An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
light injector
=OTDR
TDR
multimeter
3 Which characteristics describe fiber optic cable? (Choose two.)
=It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
=It is the most expensive type of LAN cabling.
4 When is a straight-through cable used in a network?
when connecting a router through the console port
when connecting one switch to another switch
=when connecting a host to a switch
when connecting a router to another router
5 Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
coax cable
rollover cable
=crossover cable
straight-through cable
6 Which method of signal transmission uses radio waves to carry signals?
electrical
optical
=wireless
acoustic
7 In most business LANs, which connector is used with twisted-pair networking cable?
BNC
RJ-11
=RJ-45
Type F
8 Which of the following is a characteristic of single-mode fiber-optic cable?
generally uses LEDs as the light source
relatively larger core with multiple light paths
less expensive than multimode
=generally uses lasers as the light source
9 Which type of cable run is most often associated with fiber-optic cable?
=backbone cable
horizontal cable
patch cable
work area cable
10 What are three measures of data transfer? (Choose three.)
=goodput
frequency
amplitude
=throughput
crosstalk
=bandwidth
11 With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
=the magnetic field around the adjacent pairs of wire
the use of braided wire to shield the adjacent wire pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media simultaneously
12 What is a primary role of the Physical layer in transmitting data on the network?
=create the signals that represent the bits in each frame on to the media
provide physical addressing to the devices
determine the path packets take through the network
control data access to the media
13 In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?
coax
=fiber
Cat5e UTP
Cat6 UTP
STP
14 What is a possible effect of improperly applying a connector to a network cable?
Data will be forwarded to the wrong node.
=Data transmitted through that cable may experience signal loss.
An improper signaling method will be implemented for data transmitted on that cable.
The encoding method for data sent on that cable will change to compensate for the improper connection.
15 Which fiber connector supports full duplex Ethernet?
Scoring Rule For: correctness of response
2 points for Option 3
0 points for any other option
Max Value = 2
16 What is considered a benefit of wireless as a media choice?
=more host mobility
lower security risks
reduced susceptibility to interference
less impact of the surroundings on the effective coverage area
17 What characteristic of UTP cable helps reduce the effects of interference?
the metal braiding in the shielding
the reflective cladding around core
=the twisting of the wires in the cable
the insulating material in the outer jacket
In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?
Host B can transmit immediately since it is connected on its own cable segment.
Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
Host B must send a request signal to Host A by transmitting an interframe gap.
*Host B must wait until it is certain that Host A has completed sending its frame.
Ethernet operates at which layers of the OSI model? (Choose two.)
Network layer
Transport layer
*Physical layer
Application layer
Session layer
*Data-link layer
Which of the following describe interframe spacing? (Choose two.)
*the minimum interval, measured in bit-times, that any station must wait before sending another frame
the maximum interval, measured in bit-times, that any station must wait before sending another frame
the 96-bit payload padding inserted into a frame to achieve a legal frame size
the 96-bit frame padding transmitted between frames to achieve proper synchronization
*the time allowed for slow stations to process a frame and prepare for the next frame
the maximum interval within which a station must send another frame to avoid being considered unreachable
What three primary functions does data link layer encapsulation provide? (Choose three.)
*addressing
*error detection
*frame delimiting
port identification
path determination
IP address resolution
When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
*The hosts return to a listen-before-transmit mode. <—
The hosts creating the collision have priority to send data.
The hosts creating the collision retransmit the last 16 frames.
The hosts extend their delay period to allow for rapid transmission.
What are three functions of the upper data link sublayer in the OSI model? (Choose three.)
recognizes streams of bits
*identifies the network layer protocol
*makes the connection with the upper layers
identifies the source and destination applications
*insulates network layer protocols from changes in physical equipment
determines the source of a transmission when multiple devices are transmitting
What does the IEEE 802.2 standard represent in Ethernet technologies?
MAC sublayer
Physical layer
*Logical Link Control sublayer
Network layer
Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?
A random delay is used to ensure a collision-free link.
A random delay value for each device is assigned by the manufacturer.
A standard delay value could not be agreed upon among networking device vendors.
*A random delay helps prevent the stations from experiencing another collision during the transmission.
Refer to the exhibit. Which option correctly matches the frame field type with the contents that frame field includes?
*header field - preamble and stop frame
data field - network layer packet
data field - physical addressing
trailer field - FCS and SoF
Host A has an IP address of 172.16.225.93 and a mask of 255.255.248.0. Host A needs to communicate with a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on the destination address. What two things will occur? (Choose two.)
Host A will change the destination IP to the IP of the nearest router and forward the packet.
Host A will broadcast an ARP request for the MAC of its default gateway.
A result of 172.16.225.0 will be obtained.
*Host A will broadcast an ARP request for the MAC of the destination host.
A result of 172.16.224.0 will be obtained.
*A result of 172.16.225.255 will be obtained.
Which of the following is a drawback of the CSMA/CD access method?
*Collisions can decrease network performance.
It is more complex than non-deterministic protocols.
Deterministic media access protocols slow network performance.
CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.
Ethernet operates at which layer of the TCP/IP network model?
application
physical
transport
internet
data link
*network access
What is the primary purpose of ARP?
translate URLs to IP addresses
*resolve IPv4 addresses to MAC addresses
provide dynamic IP configuration to network devices
convert internal private addresses to external public addresses
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
*No collisions will occur on this link.
Only one of the devices can transmit at a time.
The switch will have priority for transmitting data.
The devices will default back to half duplex if excessive collisions occur.
Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)
A packet with the destination IP of Router_B.
A frame with the destination MAC address of Switch_A.
A packet with the destination IP of Router_A.
*A frame with the destination MAC address of Router_A.
*A packet with the destination IP of Server_B.
A frame with the destination MAC address of Server_B.
Which statements correctly describe MAC addresses? (Choose three.)
dynamically assigned
*copied into RAM during system startup
layer 3 address
*contains a 3 byte OUI
*6 bytes long
32 bits long
Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.)
reduction in cross-talk
*minimizing of collisions
support for UTP cabling
*division into broadcast domains
increase in the throughput of communications
What are the two most commonly used media types in Ethernet networks today? (Choose two.)
*coaxial thicknet
copper UTP
coaxial thinnet
optical fiber
*shielded twisted pair
Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.
85
90
*BA
A1
B3
1C
After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?
the device involved in the collision with the lowest MAC address
the device involved in the collision with the lowest IP address
*any device in the collision domain whose backoff timer expires first
those that began transmitting at the same time
Host B can transmit immediately since it is connected on its own cable segment.
Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
Host B must send a request signal to Host A by transmitting an interframe gap.
*Host B must wait until it is certain that Host A has completed sending its frame.
Ethernet operates at which layers of the OSI model? (Choose two.)
Network layer
Transport layer
*Physical layer
Application layer
Session layer
*Data-link layer
Which of the following describe interframe spacing? (Choose two.)
*the minimum interval, measured in bit-times, that any station must wait before sending another frame
the maximum interval, measured in bit-times, that any station must wait before sending another frame
the 96-bit payload padding inserted into a frame to achieve a legal frame size
the 96-bit frame padding transmitted between frames to achieve proper synchronization
*the time allowed for slow stations to process a frame and prepare for the next frame
the maximum interval within which a station must send another frame to avoid being considered unreachable
What three primary functions does data link layer encapsulation provide? (Choose three.)
*addressing
*error detection
*frame delimiting
port identification
path determination
IP address resolution
When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
*The hosts return to a listen-before-transmit mode. <—
The hosts creating the collision have priority to send data.
The hosts creating the collision retransmit the last 16 frames.
The hosts extend their delay period to allow for rapid transmission.
What are three functions of the upper data link sublayer in the OSI model? (Choose three.)
recognizes streams of bits
*identifies the network layer protocol
*makes the connection with the upper layers
identifies the source and destination applications
*insulates network layer protocols from changes in physical equipment
determines the source of a transmission when multiple devices are transmitting
What does the IEEE 802.2 standard represent in Ethernet technologies?
MAC sublayer
Physical layer
*Logical Link Control sublayer
Network layer
Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?
A random delay is used to ensure a collision-free link.
A random delay value for each device is assigned by the manufacturer.
A standard delay value could not be agreed upon among networking device vendors.
*A random delay helps prevent the stations from experiencing another collision during the transmission.
Refer to the exhibit. Which option correctly matches the frame field type with the contents that frame field includes?
*header field - preamble and stop frame
data field - network layer packet
data field - physical addressing
trailer field - FCS and SoF
Host A has an IP address of 172.16.225.93 and a mask of 255.255.248.0. Host A needs to communicate with a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on the destination address. What two things will occur? (Choose two.)
Host A will change the destination IP to the IP of the nearest router and forward the packet.
Host A will broadcast an ARP request for the MAC of its default gateway.
A result of 172.16.225.0 will be obtained.
*Host A will broadcast an ARP request for the MAC of the destination host.
A result of 172.16.224.0 will be obtained.
*A result of 172.16.225.255 will be obtained.
Which of the following is a drawback of the CSMA/CD access method?
*Collisions can decrease network performance.
It is more complex than non-deterministic protocols.
Deterministic media access protocols slow network performance.
CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.
Ethernet operates at which layer of the TCP/IP network model?
application
physical
transport
internet
data link
*network access
What is the primary purpose of ARP?
translate URLs to IP addresses
*resolve IPv4 addresses to MAC addresses
provide dynamic IP configuration to network devices
convert internal private addresses to external public addresses
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
*No collisions will occur on this link.
Only one of the devices can transmit at a time.
The switch will have priority for transmitting data.
The devices will default back to half duplex if excessive collisions occur.
Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)
A packet with the destination IP of Router_B.
A frame with the destination MAC address of Switch_A.
A packet with the destination IP of Router_A.
*A frame with the destination MAC address of Router_A.
*A packet with the destination IP of Server_B.
A frame with the destination MAC address of Server_B.
Which statements correctly describe MAC addresses? (Choose three.)
dynamically assigned
*copied into RAM during system startup
layer 3 address
*contains a 3 byte OUI
*6 bytes long
32 bits long
Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.)
reduction in cross-talk
*minimizing of collisions
support for UTP cabling
*division into broadcast domains
increase in the throughput of communications
What are the two most commonly used media types in Ethernet networks today? (Choose two.)
*coaxial thicknet
copper UTP
coaxial thinnet
optical fiber
*shielded twisted pair
Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.
85
90
*BA
A1
B3
1C
After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?
the device involved in the collision with the lowest MAC address
the device involved in the collision with the lowest IP address
*any device in the collision domain whose backoff timer expires first
those that began transmitting at the same time