Chap Review

8/8/2019 Chap Review

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Chabot CollegeChabot College

Chapter 2 Review QuestionsChapter 2 Review Questions

Semester IIISemester III ELEC 99.09ELEC 99.09


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1. Which of the following broadcast methods1. Which of the following broadcast methods

does an Ethernet medium use to transmit anddoes an Ethernet medium use to transmit and

receive data to all nodes on the network?receive data to all nodes on the network?

A. A packet

B. A data frame

C. A segment D. A byte at a time


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1. Which of the following broadcast methods1. Which of the following broadcast methods

does an Ethernet medium use to transmit anddoes an Ethernet medium use to transmit and

receive data to all nodes on the network?receive data to all nodes on the network?

A. A packet

B. A data frame

C. A segment D. A byte at a time


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2. What is the minimum time it takes Ethernet2. What is the minimum time it takes Ethernet

to transmit 1 byte?to transmit 1 byte?

100 ns

B. 800 ns C. 51,200 ns

D. 800 microseconds


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2. What is the minimum time it takes Ethernet2. What is the minimum time it takes Ethernet

to transmit 1 byte?to transmit 1 byte?

100 ns

B. 800 ns C. 51,200 ns

D. 800 microseconds


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3. Characteristics of microsegmentation3. Characteristics of microsegmentation

include which of the following?include which of the following?

A. Dedicated paths between sender and

receiver hosts

B. Multiple traffic paths within the switch

C. All traffic visible on network segment at

once D. A and B


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3. Characteristics of microsegmentation3. Characteristics of microsegmentation

include which of the following?include which of the following?

A. Dedicated paths between sender and

receiver hosts

B. Multiple traffic paths within the switch

C. All traffic visible on network segment at

once D. A and B


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4. LAN switches are considered to be which of4. LAN switches are considered to be which of

the following?the following?

A. Multiport repeaters operating at Layer 1

B. Multiport hubs operating at Layer 2 C. Multiport routers operating at Layer3

D. Multiport bridges operating at Layer 2


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4. LAN switches are considered to be which of4. LAN switches are considered to be which of


A. Multiport repeaters operating at Layer 1

B. Multiport hubs operating at Layer 2 C. Multiport routers operating at Layer3

D. Multiport bridges operating at Layer 2


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5. Asymmetric switching is optimized for which5. Asymmetric switching is optimized for which

of the following?of the following?

A. Client/Server network traffic where the

"fast" switch port is connected to the server

B. An even distribution of network traffic

C. Switches without memory buffering

D. A and B


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5. Asymmetric switching is optimized for which5. Asymmetric switching is optimized for which

of the following?of the following?

A. Client/Server network traffic where the

"fast" switch port is connected to the server

B. An even distribution of network traffic

C. Switches without memory buffering

D. A and B


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6. In _________ switching, the switch checks6. In _________ switching, the switch checks

the destination address and immediatelythe destination address and immediately

begins forwarding the frame, and in ________begins forwarding the frame, and in ________

switching, the switch receives the completeswitching, the switch receives the complete

frame before forwarding it.frame before forwarding it.

A. Store-and-forward; symmetric

B. Cut-through; store-and-forward

C. Store-and-forward; cut-through

D. Memory buffering; cut-through


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6. In _________ switching, the switch checks6. In _________ switching, the switch checks

the destination address and immediatelythe destination address and immediately

begins forwarding the frame, and in ________begins forwarding the frame, and in ________

switching, the switch receives the completeswitching, the switch receives the complete

frame before forwarding it.frame before forwarding it.

A. Store-and-forward; symmetric

B. Cut-through; store-and-forward

C. Store-and-forward; cut-through

D. Memory buffering; cut-through


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7. The Spanning7. The Spanning--Tree Protocol allows which ofTree Protocol allows which of


A. Routers to communicate link states

B. Switches to communicate hop count

C. Bridges to communicate Layer3 information

D. Redundant network paths without suffering

the effects of loops in the network


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7. The Spanning7. The Spanning--Tree Protocol allows which ofTree Protocol allows which of


A. Routers to communicate link states

B. Switches to communicate hop count

C. Bridges to communicate Layer3 information

D. Redundant network paths without suffering

the effects of loops in the network


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11. How would each segment be considered in11. How would each segment be considered in

a network segmented by switches?a network segmented by switches?

A. Network B. Campus network

C. Collision domain

D. WAN


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11. How would each segment be considered in11. How would each segment be considered in

a network segmented by switches?a network segmented by switches?

A. Network B. Campus network

C. Collision domain

D. WAN


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12. In a full duplex Ethernet switch.12. In a full duplex Ethernet switch.

A. Collisions are virtually eliminated

B. Two cable pairs and a switchedconnection between each node are used

C. Connections between nodes are

considered point-to-point D. All of the above


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12. In a full duplex Ethernet switch.12. In a full duplex Ethernet switch.

A. Collisions are virtually eliminated

B. Two cable pairs and a switchedconnection between each node are used

C. Connections between nodes are

considered point-to-point D. All of the above


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13. Congestion causes which of the following13. Congestion causes which of the following

effects?effects?

A. Lower reliability and low traffic

B. High rate of collisions C. Network unpredictability and high error

rates

D. Lower response times, longer filetransfers, and network delays


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13. Congestion causes which of the following13. Congestion causes which of the following

effects?effects?

A. Lower reliability and low traffic

B. High rate of collisions C. Network unpredictability and high error

rates

D. Lower response times, longer filetransfers, and network delays


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14. Host A transmits to another host, Host B. The14. Host A transmits to another host, Host B. The

communication is such that Host A stops sendingcommunication is such that Host A stops sendinginformation content packets and then Host B beginsinformation content packets and then Host B begins

sending packets. Similarly, Host B stops when Host Asending packets. Similarly, Host B stops when Host A

starts transmitting again, Classify the transmissionstarts transmitting again, Classify the transmission

type astype as

A. Full-duplex

B. Half-duplex

C. Simplex

D. None of the above


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14. Host A transmits to another host, Host B. The14. Host A transmits to another host, Host B. The

communication is such that Host A stops sendingcommunication is such that Host A stops sendinginformation content packets and then Host B beginsinformation content packets and then Host B begins

sending packets. Similarly, Host B stops when Host Asending packets. Similarly, Host B stops when Host A

starts transmitting again, Classify the transmissionstarts transmitting again, Classify the transmission

type astype as

A. Full-duplex

B. Half-duplex

C. Simplex

D. None of the above


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15. Which of the following statements15. Which of the following statements

concerning packet forwarding in a LAN is notconcerning packet forwarding in a LAN is nottrue?true?

A. Store-and-forward packet-switching technique is theone in which frames are completely processed before

being forwarded out to the appropriate port B. Store-and-forward packet switching technique is

slower than cut-through packet switching

C. Cut-through packet switching is also known as on-

the-fly packet switching D. Buffering is required in cut-through packet switching

if the network connection or link is slow


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15. Which of the following statements15. Which of the following statements

concerning packet forwarding in a LAN is notconcerning packet forwarding in a LAN is nottrue?true?

A. Store-and-forward packet-switching technique is theone in which frames are completely processed before

being forwarded out to the appropriate port B. Store-and-forward packet switching technique is

slower than cut-through packet switching

C. Cut-through packet switching is also known as on-

the-fly packet switching D. Buffering is required in cut-through packet switching

if the network connection or link is slow


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16. Which of the following is true for a LAN16. Which of the following is true for a LAN

switch?switch?

A. Repairs network fragments known asmicrosegments

B. They are very high-speed multiport bridges

C. Higher latency is made up for by lowerbandwidth

D. Requires new network interface cards onattached hosts


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16. Which of the following is true for a LAN16. Which of the following is true for a LAN

switch?switch?

A. Repairs network fragments known asmicrosegments

B. They are very high-speed multiport bridges

C. Higher latency is made up for by lowerbandwidth

D. Requires new network interface cards onattached hosts


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17. How many collision domains would be17. How many collision domains would be

created by a 16created by a 16--port LAN switch?port LAN switch?

A. One

B. Two C. Fourteen

D. Sixteen


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17. How many collision domains would be17. How many collision domains would be

created by a 16created by a 16--port LAN switch?port LAN switch?

A. One

B. Two C. Fourteen

D. Sixteen


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18. By creating a virtual circuit with LAN18. By creating a virtual circuit with LAN

switching, what will result on the segment?switching, what will result on the segment?

A. Increased collisions

B. Decreased available bandwidth

C. Increased broadcasts

D. Increased available bandwidth


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18. By creating a virtual circuit with LAN18. By creating a virtual circuit with LAN

switching, what will result on the segment?switching, what will result on the segment?

A. Increased collisions

B. Decreased available bandwidth

C. Increased broadcasts

D. Increased available bandwidth


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19. How do switches learn the addresses of19. How do switches learn the addresses of

devices that are attached to theirports?devices that are attached to theirports?

A. Switches get the tables from a router

B. Switches read the source address of a packet

entering through a port

C. Switches exchange address tables with other

switches

D. Switches are not capable of building addresstables


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19. How do switches learn the addresses of19. How do switches learn the addresses of

devices that are attached to theirports?devices that are attached to theirports?

A. Switches get the tables from a router

B. Switches read the source address of a packet

entering through a port

C. Switches exchange address tables with other

switches

D. Switches are not capable of building addresstables


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20. What is the purpose of symmetric20. What is the purpose of symmetric

switching?switching?

A. To provide switch connections on ports withthe same bandwidths

B. To make sure the network tables aresymmetrical

C. To provide switched connections on ports withdifferent bandwidths

D. Switches onlyprovide asymmetrical switching


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20. What is the purpose of symmetric20. What is the purpose of symmetric

switching?switching?

A. To provide switch connections on ports withthe same bandwidths

B. To make sure the network tables aresymmetrical

C. To provide switched connections on ports withdifferent bandwidths

D. Switches onlyprovide asymmetrical switching


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