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 Computer system security week 11 quiz solution

Q:1. In TCP,

1.sending and receiving data is done as stream of bytes.

2.It is connection oriented.

3.Both 1 and 2

4.None of the above

Answer:- 3.Both 1 and 2

 Reason:- tcp is that sending and receiving data is done as stream of bytes and It is connection oriented because The Transmission Control Protocol is one of the main protocols of the Internet protocol suite.. 

Q:2. Fragmentation and Reassembly is one of the process of which protocol ?

1.TCP

2.IP

3.UDP

4.None of the mentioned

Answer:- 2.IP

Reason:- Fragmentation & reassembly are CPU (and in some cases memory) intensive and best avoided if possible. · Hosts and, less often, network or IP fragmentation is an Internet Protocol (IP) process that breaks packets into smaller pieces (fragments).

Q:3. ____ protocol uses _____ protocol.

1.TCP,sliding window flow control

2.UDP,sliding window flow control

3.Both A and B

4.None of the above

Answer:- 1.TCP,sliding window flow control

 Reason:- TCP uses a sliding window protocol to control the number of bytes in flight it can have. In other words, the number of bytes that were sent but not yet ack ed.(TCP,sliding window flow control protocol).

Q:4. The Open Shortest Path First (OSPF) protocol is an intra domain routing protocol based on ________ routing.

1.Distance vector

2.Link state

3.Path vector

4.Non-distance vector

Answer:- 2.Link state

Reason:- The Open Shortest Path First (OSPF) protocol is an intra domain routing protocol based on link state routing because The OSPF (Open Shortest Path First) protocol is one of a family of IP Routing protocols, and is an Interior Gateway Protocol (IGP) for the Internet, used to distribute IP routing information throughout a single Autonomous System (AS) in an IP network.

Q:5. In OSPF, a ……… link is a network with several routers attached to it.

1.Point-to-point

2.Transient

3.Stub

4.Multipoint

Answer:- 2.Transient

Reason:- In OSPF, a transient link is a network with several routers attached to it because Transient link. It is a network with several routers attached to it. The data can enter through any one of the routers and pass through any router.