Class Test-5

1. In Store-and-Forward packet switching, which of the following is true?

• A) The entire packet is received before forwarding

• B) The first bit of the packet is forwarded before the last bit arrives

• C) Packets are directly sent without any delay

• D) No packet buffering is required

2. Which of the following services is NOT typically provided by the network layer to the transport layer?

• A) Routing

• B) Addressing

• C) End-to-end error control

• D) Packet forwarding

3. What is a key difference between connection-oriented and connectionless services?

• A) Connectionless service requires a dedicated path, while connection-oriented does not

• B) Connection-oriented service establishes a session before data transmission

• C) Connection-oriented services do not use acknowledgments

• D) Connectionless services always guarantee packet delivery

4. Which routing algorithm follows the principle that the best route to a destination depends only on the destination, not the source?

• A) Distance Vector

• B) Link State

• C) Optimality Principle

• D) Hierarchical Routing

5. In distance vector routing, what problem does the “count to infinity” issue refer to?

• A) Routers continuously update the cost to a destination incorrectly

• B) There is no known path to a destination

• C) The routing table grows infinitely

• D) The network fails to send updates

6. What is the main advantage of hierarchical routing?

• A) Simplifies addressing and reduces routing table size

• B) Requires less processing power

• C) Eliminates congestion entirely

• D) Uses only static routes

7. Which of the following is NOT an approach to congestion control?

• A) Traffic-aware routing

• B) Admission control

• C) Load shedding

• D) Error correction

8. What is the main purpose of the leaky bucket algorithm?

• A) Detect network failures

• B) Regulate data flow and prevent congestion

• C) Encrypt network traffic

• D) Increase bandwidth

9. How does the token bucket algorithm differ from the leaky bucket algorithm?

• A) Token bucket allows bursty traffic, while leaky bucket does not

• B) Token bucket discards excess packets, while leaky bucket stores them

• C) Leaky bucket allows variable transmission rates, while token bucket does not

• D) Token bucket is only used in wired networks

10. What is the main reason for IP fragmentation?

• A) To increase security

• B) To allow large packets to be transmitted over networks with smaller MTU

• C) To improve bandwidth utilization

• D) To enable encryption