Which of the following can be considered as the primary function of snooping tcp?
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Show Online Mcqs Test – Mobile Computing MCQ with Answers consists of 90 questions, 10 questions in a set. All these are general MCQ questions related to mobile computing and mobile and wireless communication. 1. TCP supports many of the Internet’s most popular application protocols and resulting applications, including the –
a. World Wide Web, b. e-mail c. File Transfer Protocol and Secure Shell d. All of the above Answer d: All of the above
2. In the Internet protocol suite, TCP is the intermediate layer between the —– a. Internet layer and application layer b. Mobile laver and application layer c. Transport layer and application layer d. Session layer and application layer Answer a
3. The major responsibilities of TCP in an active session are to: a. Provide reliable in-order transport of data b. Control congestions in the networks c. Control a packet flow between the transmitter and the receiver d. All of the above Answer d
4. In TCP protocol to mitigate congestion, TCP —————–the transmission rate dramatically. a. Stop the transmission b. Wait to resolve the congestion c. Slows down d. None of the above Answer C
5. The behavior of TCP shows after the detection of congestion is called a. Slow start b. Slows down c. Wait to restart d. None of the above Answer a
6. In TCP during the slow start doubling the congestion window, every time acknowledgments come back until reaching the congestion threshold is called a. The exponential growth of the congestion window b Doubling the growth of the congestion window c. Linear growth of the congestion window d. None Answer a
7. As soon as the congestion window reaches the congestion threshold, further increase of the transmission rate is only linear by adding ……… to the congestion window each time the acknowledgments come back. a. 1 b. 2 c. 3 4. None of the above Answer a
8. In TCP/IP, ———————— is a congestion control algorithm that makes it possible to quickly recover lost data packets. a. fast retransmit and fast recovery b. Fast retransmit c. Fast recovery d. None of the above Answer a
9. Due to packet loss due to transmission error the sender can now retransmit the missing packet(s) before the timer expires. This behavior is called a. Fast retransmit b. Fast recovery c. Congestion control d. None Answer a
10. Problems with Traditional TCP in wireless environments is/are a. Slow Start mechanism in fixed networks decreases the efficiency of TCP if used with mobile receivers or senders. b. Error rates on wireless links are orders of magnitude higher compared to fixed fiber or copper links. This makes compensation for packet loss by TCP quite difficult. c. Mobility itself can cause packet loss. There are many situations where a soft handover from one access point to another is not possible for a mobile end-system. d. All of the above Answer d
11. Indirect TCP segments a TCP connection into a fixed part and a ——- a. wireless part b. wired part c. either wireless part or wired part d. None of the above Answer c
12. In I-TCP a suitable place for segmenting the connection is at the …………………… as it not only controls the mobility of the mobile host anyway and can also hand over the connection to the next foreign agent when the mobile host moves on. a. Router b. Home agent c. Foreign agent d. Access point Answer c
13. Disadvantages of I-TCP includes – a. Loss of end-to-end semantics b. Higher latency possible c. Security issues d. All of the above Answer d
14. In the I TCP the Foreign Agent (FA) becomes or acts as a —— and relays data in both directions a. Proxy b. Router c. Node d. Access point Answer a
15. Which of the following buffers data close to the mobile host to perform fast local retransmission in case of packet loss. a. Indirect TCP b. Snooping TCP c. Foreign agent d. None of the following Answer b
16. A new enhancement, which leaves the TCP connection intact and is completely transparent, is ———– a. Mobile TCP b. Snooping TCP c. I TCP d. None Answer a
17. M-TCP is specially adapted to the problems arising from lengthy or frequent ————– a. Delay packet b. Packet loss c. disconnections d. None Answer c: Disconnection
18. In which of the following the sender can now determine precisely which packet is needed and retransmit it? What is the primary function of snooping TCP?Snooping TCP is one of the classical TCP improvement approaches. This approach is designed to solve the end-to-end semantics loss in I-TCP. The basic concept is to buffer packets close to the mobile node and retransmit them locally if a packet is lost.
What is snooping in mobile computing?Snooping is a broad term that can include casual observance of an email that appears on another person's computer screen or watching what someone else is typing. More sophisticated snooping uses software to remotely monitor activity on a computer or as communications data traverses a network.
What is snooping TCP ques10?A new enhancement, which leaves the TCP connection intact and is completely transparent, is Snooping TCP. The main function is to buffer data close to the mobile host to perform fast local re transmission in case of packet loss.
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