2-1: Introduction to Switched Networks

Question 1

What does the access layer provide? [1.1.1.3]

Answer 1

Connectivity for the users.

Question 2

Which type of transmission does a switch use when the destination MAC address is not contained in the MAC address table?

Answer 2

Broadcast

Question 3

What is a basic function of the Cisco Borderless Architecture distribution layer?

Answer 3

Aggregating Layer 3 routing boundaries

Question 4

How many collision domains are in the topology?​

Answer 4

12. Each link is a collision domain.

Question 5

What information is added to the switch table from incoming frames?

Answer 5

Source MAC address and incoming port number

Question 6

What are two advantages of modular switches over fixed-configuration switches?

Answer 6

1. Need for fewer power outlets
2. Increased scalability

Question 7

What is a collapsed core in a network design?

Answer 7

A combination of the functionality of the distribution and core layers

Question 8

ABC, Inc. has about fifty hosts in one LAN. The administrator would like to increase the throughput of that LAN. Which device will increase the number of collision domains and thereby increase the throughput of the LAN?

Answer 8

A switch

Question 9

Which forwarding type may forward invalid frames?

Answer 9

Cut-through

Question 10

Which forwarding type is appropriate for high performance computing applications?

Answer 10

Cut-through

Question 11

Which forwarding type checks for frame errors before forwarding it?

Answer 11

Store-and-Forward

Question 12

What is a basic function of the Cisco Borderless Architecture access layer?

Answer 12

Provides access to the user

Question 13

Which two features of the hierarchical design make it the better choice?

Answer 13

1. Easier to provide redundant links to ensure higher availability
2. Simpler deployment for additional switch equipment

Question 14

An administrator purchases new Cisco switches that have a feature called StackPower. What is the purpose of this feature?

Answer 14

It enables the sharing of power among multiple stackable switches.

Question 15

How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?

Answer 15

SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch.

Question 16

What does the term “port density” represent for an Ethernet switch?

Answer 16

The number of available ports

Question 17

How many broadcast domains are in the topology.​

Answer 17

5.

Question 18

What is one advantage of using the cut-through switching method instead of the store-and-forward switching method?

Answer 18

Has a lower latency appropriate for high-performance computing applications​

Question 19

What are two reasons a network administrator would segment a network with a Layer 2 switch?

Answer 19

1. To isolate traffic between segments
2. To enhance user bandwidth

Question 20

Which switch form factor should be used when large port density, fault tolerance, and low price are important factors?

Answer 20

Stackable switch

Question 21

A ________ network is one that uses the same infrastructure to carry voice, data, and video signals.

Answer 21

Converged

Question 22

What is one function of a Layer 2 switch?

Answer 22

Determines which interface is used to forward a frame based on the destination MAC address