Cisco 640-911 Question Answer

What are three reasons that switches supersede bridges? (Choose three.)

A. Smaller frame buffers decrease latency.
B. Forward, filter, or flood frames.
C. Multiple simultaneous communications between ports.
D. Larger inspection engine allows for higher throughput.
E. Switches have many ports.

Answer: BCE


What action does a switch take if the destination MAC address is unknown?

A. Discard frame
B. Send ICMP unreachable message to source
C. Flood packet on all ports
D. Compare destination IP address against an ACL to determine if it is permitted
E. Send gratuitous ARP on all ports and wait for reply before forwarding

Answer: C

Cisco 640-911 Question Answer

Which field in an Ethernet II frame performs the same function as the DSAP field in an 802.3 Ethernet frame?

A. Start of frame
B. EtherType
C. Frame check sequence
D. Subnetwork Access Protocol
E. Logical Link Control

Answer: B


What are two features of a bridge? (Choose two.)

A. Reliable transmission
B. Operate at OSI Layer 2
C. Operate at OSI Layer 3
D. Create multiple broadcast domains
E. Create multiple collision domains
F. Flood input packets to all ports
G. Drop IP packets with invalid destination ports

Answer: BE

Pass4sure 640-911 Question Answer

Which two network topologies are the most popular in switching? (Select two.)

A. bus
B. token passing bus
C. star
D. extended star
E. ring

Answer: C, D

Pass4sure 640-911 Question Answer

Which two networking devices forward data based on destination MAC address? (Select two.)

A. repeater
B. bridge
C. switch
D. router
E. hub

Answer: B, C

Pass4sure 640-911 Question Answer

Which two networking devices operate at Layer 1 of the OSI model? (Select two.)

A. repeater
B. bridge
C. switch
D. router
E. hub

Answer: A, E

Pass4sure 640-911 Question Answer

Which two layers of the OSI model are combined in the Internet protocol suite network access layer? (Choose two.)

A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
G. 7

Answer: A,B                                               

Pass4sure 640-911 Question Answer

Which three terms are used to describe data at Layers 1, 2, and 4 of the OSI model? (Choose three.)

A. PDUs
B. Bits
C. Sequences
D. Segments
E. Packets
F. Frames

Answer: B,D,F


Which two layers of the OSI model are combined in the Internet protocol suite application layer? (Choose two.)

A. 2
B. 3
C. 4
D. 5
E. 6
F. 7

Answer: D,E