Chabot CollegeChabot College

Chapter 2 Review QuestionsChapter 2 Review Questions

Semester IIISemester III ELEC 99.09ELEC 99.09

1. Which of the following broadcast 1. Which of the following broadcast methods does an Ethernet medium use to methods does an Ethernet medium use to transmit and receive data to all nodes on transmit and receive data to all nodes on the network?the network?

• A. A packet

• B. A data frame

• C. A segment

• D. A byte at a time

1. Which of the following broadcast 1. Which of the following broadcast methods does an Ethernet medium use to methods does an Ethernet medium use to transmit and receive data to all nodes on transmit and receive data to all nodes on the network?the network?

• A. A packet

• B. A data frame

• C. A segment

• D. A byte at a time

2. What is the minimum time it takes 2. What is the minimum time it takes Ethernet to transmit 1 byte?Ethernet to transmit 1 byte?

• 100 ns

• B. 800 ns

• C. 51,200 ns

• D. 800 microseconds

2. What is the minimum time it takes 2. What is the minimum time it takes Ethernet to transmit 1 byte?Ethernet to transmit 1 byte?

• 100 ns

• B. 800 ns

• C. 51,200 ns

• D. 800 microseconds

3. Characteristics of microsegmentation 3. 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

3. Characteristics of microsegmentation 3. 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

4. LAN switches are considered to be 4. LAN switches are considered to be which of the following?which of the following?

• A. Multiport repeaters operating at Layer 1

• B. Multiport hubs operating at Layer 2

• C. Multiport routers operating at Layer 3

• D. Multiport bridges operating at Layer 2

4. LAN switches are considered to be 4. LAN switches are considered to be which of the following?which of the following?

• A. Multiport repeaters operating at Layer 1

• B. Multiport hubs operating at Layer 2

• C. Multiport routers operating at Layer 3

• D. Multiport bridges operating at Layer 2

5. Asymmetric switching is optimized for 5. Asymmetric switching is optimized for which of the following?which 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

5. Asymmetric switching is optimized for 5. Asymmetric switching is optimized for which of the following?which 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

6. In _________ switching, the switch 6. In _________ switching, the switch checks the destination address and checks the destination address and immediately begins forwarding the frame, immediately begins forwarding the frame, and in ________ switching, the switch and in ________ switching, the switch receives the complete frame before receives the complete frame before forwarding it.forwarding it.

• A. Store-and-forward; symmetric

• B. Cut-through; store-and-forward

• C. Store-and-forward; cut-through

• D. Memory buffering; cut-through

6. In _________ switching, the switch 6. In _________ switching, the switch checks the destination address and checks the destination address and immediately begins forwarding the frame, immediately begins forwarding the frame, and in ________ switching, the switch and in ________ switching, the switch receives the complete frame before receives the complete frame before forwarding it.forwarding it.

• A. Store-and-forward; symmetric

• B. Cut-through; store-and-forward

• C. Store-and-forward; cut-through

• D. Memory buffering; cut-through

7. The Spanning-Tree Protocol allows 7. The Spanning-Tree Protocol allows which of the following?which of the following?

• A. Routers to communicate link states

• B. Switches to communicate hop count

• C. Bridges to communicate Layer 3 information

• D. Redundant network paths without suffering the effects of loops in the network

7. The Spanning-Tree Protocol allows 7. The Spanning-Tree Protocol allows which of the following?which of the following?

• A. Routers to communicate link states

• B. Switches to communicate hop count

• C. Bridges to communicate Layer 3 information

• D. Redundant network paths without suffering the effects of loops in the network

11. How would each segment be 11. How would each segment be considered in a network segmented by considered in a network segmented by switches?switches?

• A. Network

• B. Campus network

• C. Collision domain

• D. WAN

11. How would each segment be 11. How would each segment be considered in a network segmented by considered in a network segmented by switches?switches?

• A. Network

• B. Campus network

• C. Collision domain

• D. WAN

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 switched connection between each node are used

• C. Connections between nodes are considered point-to-point

• D. All of the above

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 switched connection between each node are used

• C. Connections between nodes are considered point-to-point

• D. All of the above

13. Congestion causes which of the 13. Congestion causes which of the following effects?following effects?

• A. Lower reliability and low traffic

• B. High rate of collisions

• C. Network unpredictability and high error rates

• D. Lower response times, longer file transfers, and network delays

13. Congestion causes which of the 13. Congestion causes which of the following effects?following effects?

• A. Lower reliability and low traffic

• B. High rate of collisions

• C. Network unpredictability and high error rates

• D. Lower response times, longer file transfers, and network delays

14. Host A transmits to another host, Host B. 14. Host A transmits to another host, Host B. The communication is such that Host A stops The communication is such that Host A stops sending information content packets and then sending information content packets and then Host B begins sending packets. Similarly, Host Host B begins sending packets. Similarly, Host B stops when Host A starts transmitting again, B stops when Host A starts transmitting again, Classify the transmission type asClassify the transmission type as

• A. Full-duplex

• B. Half-duplex

• C. Simplex

• D. None of the above

14. Host A transmits to another host, Host B. 14. Host A transmits to another host, Host B. The communication is such that Host A stops The communication is such that Host A stops sending information content packets and then sending information content packets and then Host B begins sending packets. Similarly, Host Host B begins sending packets. Similarly, Host B stops when Host A starts transmitting again, B stops when Host A starts transmitting again, Classify the transmission type asClassify the transmission type as

• A. Full-duplex

• B. Half-duplex

• C. Simplex

• D. None of the above

15. Which of the following statements 15. Which of the following statements concerning packet forwarding in a LAN is concerning packet forwarding in a LAN is not true?not true?

• A. Store-and-forward packet-switching technique is the one 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

15. Which of the following statements 15. Which of the following statements concerning packet forwarding in a LAN is concerning packet forwarding in a LAN is not true?not true?

• A. Store-and-forward packet-switching technique is the one 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

16. Which of the following is true for a 16. Which of the following is true for a LAN switch?LAN switch?

• A. Repairs network fragments known as microsegments

• B. They are very high-speed multiport bridges

• C. Higher latency is made up for by lower bandwidth

• D. Requires new network interface cards on attached hosts

16. Which of the following is true for a 16. Which of the following is true for a LAN switch?LAN switch?

• A. Repairs network fragments known as microsegments

• B. They are very high-speed multiport bridges

• C. Higher latency is made up for by lower bandwidth

• D. Requires new network interface cards on attached hosts

17. How many collision domains would be 17. How many collision domains would be created by a 16-port LAN switch?created by a 16-port LAN switch?

• A. One

• B. Two

• C. Fourteen

• D. Sixteen

17. How many collision domains would be 17. How many collision domains would be created by a 16-port LAN switch?created by a 16-port LAN switch?

• A. One

• B. Two

• C. Fourteen

• D. Sixteen

18. By creating a virtual circuit with LAN 18. By creating a virtual circuit with LAN switching, what will result on the switching, what will result on the segment?segment?

• A. Increased collisions

• B. Decreased available bandwidth

• C. Increased broadcasts

• D. Increased available bandwidth

18. By creating a virtual circuit with LAN 18. By creating a virtual circuit with LAN switching, what will result on the switching, what will result on the segment?segment?

• A. Increased collisions

• B. Decreased available bandwidth

• C. Increased broadcasts

• D. Increased available bandwidth

19. How do switches learn the addresses 19. How do switches learn the addresses of devices that are attached to their ports?of devices that are attached to their ports?

• 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 address tables

19. How do switches learn the addresses 19. How do switches learn the addresses of devices that are attached to their ports?of devices that are attached to their ports?

• 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 address tables

20. What is the purpose of symmetric 20. What is the purpose of symmetric switching?switching?

• A. To provide switch connections on ports with the same bandwidths

• B. To make sure the network tables are symmetrical

• C. To provide switched connections on ports with different bandwidths

• D. Switches only provide asymmetrical switching

20. What is the purpose of symmetric 20. What is the purpose of symmetric switching?switching?

• A. To provide switch connections on ports with the same bandwidths

• B. To make sure the network tables are symmetrical

• C. To provide switched connections on ports with different bandwidths

• D. Switches only provide asymmetrical switching

The End