Computer Network Mcqs

Page No. 32

TCP groups a number of bytes together into a packet called _______


a Packet


bBuffer


cSegment


dStack


View Answer Segment

TCP process may not write and read data at the same speed. So we need __________ for storage.


a Packets


bBuffers


cSegments


dStacks


View Answer Buffers

In TCP, sending and receiving data is done as _______


aStream of bytes


bSequence of characters


cLines of data


dPackets


View Answer Stream of bytes

Which of the following is false with respect to TCP?


a Connection-oriented


bProcess-to-process


cTransport layer protocol


dUnreliable


View Answer Unreliable

What allows TCP to detect lost segments and in turn recover from that loss?


aSequence number


bAcknowledgment number


cChecksum


dBoth Sequence & Acknowledgment number


View Answer Acknowledgment number

The sizes of source and destination port address in TCP header are ___________ respectively.


a16-bits and 32-bits


b 16-bits and 16-bits


c 32-bits and 16-bits


d 32-bits and 32-bits



SYNC flooding attack belongs to a type of security attack known as ___________


aSYNC flooding attack


bActive attack


cPassive attack


dDenial-of-service attack



A malicious attacker sends a large number of SYNC segments to a server, pretending that each of them is coming from a different client by faking the source IP address in the datagram. Which type of attack is being performed in this situation?


a SYNC flooding attack


b Active attack


c Passive attack


dDenial-of-service attack



In Three-Way Handshaking process, the situation where both the TCP’s issue an active open is ___________


aMutual open


bMutual Close


c Simultaneous open


dSimultaneous close


View Answer Simultaneous open

A client that wishes to connect to an open server tells its TCP that it needs to be connected to that particular server. The process is called ___________


aActive open


bActive close


cPassive close


dPassive open


View Answer Active open

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