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QUESTION NO: 1

Refer to the exhibit:

What will Router1 do when it receives the data frame shown? (Choose three.)

A. Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965.

B. Router1 will strip off the source IP address and replace it with the IP address 192.168.40.1. C. Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320.

D. Router1 will strip off the destination IP address and replace it with the IP address of 192.168.40.1.

E. Router1 will forward the data packet out interface FastEthernet0/1.

F. Router1 will forward the data packet out interface FastEthernet0/2.

Answer: A,C,F Explanation:

QUESTION NO: 2

Refer to the exhibit.

Which three statements correctly describe Network Device A? (Choose three.)

A. With a network wide mask of 255.255.255.128, each interface does not require an IP address. B. With a network wide mask of 255.255.255.128, each interface does require an IP address on a unique IP subnet.

C. With a network wide mask of 255.255.255.0, must be a Layer 2 device for the PCs to communicate with each other.

D. With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to communicate with each other.

E. With a network wide mask of 255.255.254.0, each interface does not require an IP address.

Answer: B,D,E Explanation:

QUESTION NO: 3

Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?

A. transport

B. network

C. presentation

D. session

E. application

Answer: E

Explanation:

QUESTION NO: 4

Which of the following describes the roles of devices in a WAN? (Choose three.)

A. A CSU/DSU terminates a digital local loop.

B. A modem terminates a digital local loop.

C. A CSU/DSU terminates an analog local loop.

D. A modem terminates an analog local loop.

E. A router is commonly considered a DTE device.

F. A router is commonly considered a DCE device.

Answer: A,D,E Explanation:

QUESTION NO: 5

Refer to the exhibit.

Host A pings interface S0/0 on router 3. What is the TTL value for that ping?

A. 252

B. 253

C. 254

D. 255

Answer: B

Explanation:

QUESTION NO: 6

A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. What is the highest layer of the protocol stack that the network administrator is using for this operation?

A. application

B. presentation

C. session

D. transport

E. internet

F. data link

Answer: A

Explanation:

QUESTION NO: 7

Refer to the exhibit.

After HostA pings HostB, which entry will be in the ARP cache of HostA to support this transmission?

A. Exhibit A

B. Exhibit B

C. Exhibit C

D. Exhibit D

E. Exhibit E

F. Exhibit F

Answer: A

Explanation:

QUESTION NO: 8

A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?

A. This is a 10 Mb/s switch port.

B. This is a 100 Mb/s switch port.

C. This is an Ethernet port operating at half duplex.

D. This is an Ethernet port operating at full duplex.

E. This is a port on a network interface card in a PC.

Answer: C

Explanation:

QUESTION NO: 9

A receiving host computes the checksum on a frame and determines that the frame is damaged.

The frame is then discarded. At which OSI layer did this happen?

A. session

B. transport

C. network

D. data link

E. physical

Answer: D

Explanation:

QUESTION NO: 10

Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two.)

A. The transport layer divides a data stream into segments and may add reliability and flow control information.

B. The data link layer adds physical source and destination addresses and an FCS to the segment.

C. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.

D. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.

E. The presentation layer translates bits into voltages for transmission across the physical link.

Answer: A,D

Explanation:

QUESTION NO: 11

Refer to the graphic.

Host A is communicating with the server. What will be the source MAC address of the frames received by Host A from the server?

A. the MAC address of router interface e0

B. the MAC address of router interface e1

C. the MAC address of the server network interface

D. the MAC address of host A

Answer: A

Explanation:

QUESTION NO: 12

Refer to the exhibit.

What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN? (Choose two.)

A. The number of collision domains would remain the same.

B. The number of collision domains would decrease.

C. The number of collision domains would increase.

D. The number of broadcast domains would remain the same.

E. The number of broadcast domains would decrease.

F. The number of broadcast domains would increase.

Answer: C,D

Explanation:

QUESTION NO: 13

Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.)

A. Spanning Tree Protocol allows switches to automatically share VLAN information.

B. Establishing VLANs increases the number of broadcast domains.

C. Switches that are configured with VLANs make forwarding decisions based on both Layer 2 and Layer 3 address information.

D. Microsegmentation decreases the number of collisions on the network.

E. In a properly functioning network with redundant switched paths, each switched segment will contain one root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only one root port.

F. If a switch receives a frame for an unknown destination, it uses ARP to resolve the address.

Answer: B,D,E Explanation:

QUESTION NO: 14

Where does routing occur within the DoD TCP/IP reference model?

A. application

B. internet

C. network

D. transport

Answer: B

Explanation:

QUESTION NO: 15

Refer to exhibit:

Which destination addresses will be used by Host A to send data to Host C? (Choose two.)

A. the IP address of Switch 1

B. the MAC address of Switch 1

C. the IP address of Host C

D. the MAC address of Host C

E. the IP address of the router's E0 interface

F. the MAC address of the router's E0 interface

Answer: C,F

Explanation:

QUESTION NO: 16

For what two purposes does the Ethernet protocol use physical addresses? (Choose two.)

A. to uniquely identify devices at Layer 2

B. to allow communication with devices on a different network

C. to differentiate a Layer 2 frame from a Layer 3 packet

D. to establish a priority system to determine which device gets to transmit first

E. to allow communication between different devices on the same network

F. to allow detection of a remote device when its physical address is unknown

Answer: A,E

Explanation:

QUESTION NO: 17

Refer to the exhibit.

Based on the information given, which switch will be elected root bridge and why?

A. Switch A, because it has the lowest MAC address

B. Switch A, because it is the most centrally located switch

C. Switch B, because it has the highest MAC address

D. Switch C, because it is the most centrally located switch

E. Switch C, because it has the lowest priority

F. Switch D, because it has the highest priority

Answer: E

Explanation:

QUESTION NO: 18

Which of the following statements describe the network shown in the graphic? (Choose two.)

A. There are two broadcast domains in the network.

B. There are four broadcast domains in the network.

C. There are six broadcast domains in the network.

D. There are four collision domains in the network.

E. There are five collision domains in the network.

F. There are seven collision domains in the network.

Answer: A,F

Explanation:

QUESTION NO: 19

In an Ethernet network, under what two scenarios can devices transmit? (Choose two.)

A. when they receive a special token

B. when there is a carrier

C. when they detect no other devices are sending

D. when the medium is idle

E. when the server grants access

Answer: C,D

Explanation:

QUESTION NO: 20

A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance?

A. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.

B. Add a second router to handle the VLAN traffic.

C. Add two more Fast Ethernet interfaces.

D. Implement a router-on-a-stick configuration.

Answer: D

Explanation:

QUESTION NO: 21

Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down.