Question 1

Which of the following commands will provide statistics about incoming and outgoing frames on an interface such as the number of unicast, multicast, and broadcast frames in and out of the interface?

Accepted Answer

A)  show interface name counters 
B)  show mac address-table 
C)  show interface name status 
D)  show mac address-table dynamic A

Question 2

Given the following address table, which port will NOT retransmit a frame received from 0200.3333.3333?

$\begin{array}{llll} 
\text {Vlan }&\text { Mac Address} &\text { Type }&\text { Ports} \
---- & --------- & ------- & ----- \
1 & 0200.1111 .1111 & \text {DYNAMIC }& Fa0/1 \
1 & 0200.2222 .2222 & \text {DYNAMIC} & \mathrm{Fa} 0 / 2  \
1 & 0200.3333 .3333 &\text { DYNAMIC }& \mathrm{Fa} 0 / 3  \
1 & 0200.4444 .4444 & \text {DYNAMIC }&  \mathrm{Fa} 0 / 4
\end{array}$

Accepted Answer

A)  Fa0/1 
B)  Fa0/2 
C)  Fa0/3 
D)  Fa0/4 C

Question 3

Which of the following items does a switch populate into its address table upon receiving a frame from an unknown source?

Accepted Answer

A)  The source MAC address 
B)  The receiving interface 
C)  The destination MAC address 
D)  The destination port A, B

Question 4

Which of the following will occur on a network with redundant links that does NOT use STP?

Accepted Answer

A)  A frame will loop forever on the network. 
B)  The frame will transmit until a countdown timer is hit. 
C)  The frame will transmit once and may not reach its destination. 
D)  The frame will connect correctly as long as the redundancy is limited.

Question 5

Which of the following will occur when a switch encounters an unknown destination unicast frame?

Accepted Answer

A)  The switch will flood the frame. 
B)  The switch will determine if the incoming frame has a known source. 
C)  The switch will filter the frame. 
D)  The switch will add the destination to its address table.

Question 6

Which of the following is the goal of establishing a loop-free environment?

Accepted Answer

A)  This allows a switch to learn MAC addresses. 
B)  This allows a switch to forward only one copy of the message to the destination. 
C)  This allows the switch to examine the source MAC address of each frame. 
D)  This allows the switch to decide whether or not to forward a frame.

Question 7

Given the following address table, which port would be used to forward a frame destined for 0200.2222.2222?
$\begin{array}{llll} 
\text {Vlan }&\text { Mac Address} &\text { Type }&\text { Ports} \
---- & --------- & ------- & ----- \
1 & 0200.1111 .1111 & \text {DYNAMIC }& Fa0/1 \
1 & 0200.2222 .2222 & \text {DYNAMIC} & \mathrm{Fa} 0 / 2  \
1 & 0200.3333 .3333 &\text { DYNAMIC }& \mathrm{Fa} 0 / 3  \
1 & 0200.4444 .4444 & \text {DYNAMIC }&  \mathrm{Fa} 0 / 4
\end{array}$

Accepted Answer

A)  Fa0/1 
B)  Fa0/2 
C)  Fa0/3 
D)  Fa0/4

Question 8

Other than user-issued commands, what will cause a switch to remove an entry in an address table?

Accepted Answer

A)  The age of the entry 
B)  The address table becoming full 
C)  The source address being recognized again 
D)  The destination address belonging to the same interface as the source

Question 9

The process of sending frames out all other interfaces, except the interface on which the frame arrived, is called ________.

Accepted Answer

A)  Forwarding 
B)  Replication 
C)  Flooding 
D)  Copying

Question 10

When connecting multiple switches with redundant links, which of the following protocols helps to ensure that you will have a loop-free Ethernet network?

Accepted Answer

A)  STP 
B)  HTTP 
C)  TCP 
D)  ARP

Question 11

Which of the following keywords for the show mac address-table dynamic command would be most beneficial to a network engineer troubleshooting a problem using a network topology diagram that does NOT contain MAC addresses?

Accepted Answer

A)  interface 
B)  address 
C)  vlan 
D)  aging-time

Question 12

Which of the following prevents loops from a switch?

Accepted Answer

A)  STP 
B)  MAC filtering 
C)  Disabling send/receive on some ports 
D)  VLAN

Question 13

The IEEE defines three general categories of Ethernet MAC addresses. What are these three types?

Accepted Answer

A)  Anycast 
B)  Unicast 
C)  Loopback 
D)  Broadcast 
E)  Singlecast
F) Multicast

Question 14

Which of the following is an action that can be taken by a switch upon receiving a frame?

Accepted Answer

A)  It may forward the frame out of a selected port. 
B)  It may filter the frame and not send it out of a port. 
C)  It may retransmit the frame out of the port at which it was received. 
D)  It may periodically retransmit the frame on all ports to assure receipt.

Question 15

When STP has placed a port in the blocked state, this port ________.

Accepted Answer

A)  Will receive and forward data frames only 
B)  Will receive data frames but cannot forward them 
C)  Will forward data frames but cannot receive them 
D)  Cannot receive or forward data frames

Exam 5: Analyzing Ethernet Lan Switching