gs gs123 Transport Layer - TCP - Quiz No.1
gs gs123 Cryptography and Network Security Quiz
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Question 1: Which of the following is false with respect to TCP?
Connection-oriented
Process-to-process
Transport layer protocol
Unreliable
Question 2: In TCP, sending and receiving data is done as _______
Stream of bytes
Sequence of characters
Lines of data
Packets
Question 3: TCP process may not write and read data at the same speed. So we need __________ for storage.
Packets
Buffers
Segments
Stacks
Question 4: TCP groups a number of bytes together into a packet called _______
Packet
Buffer
Segment
Stack
Question 5: Communication offered by TCP is ________
Full-duplex
Half-duplex
Semi-duplex
Byte by byte
Question 6: To achieve reliable transport in TCP, ___________ is used to check the safe and sound arrival of data.
Packet
Buffer
Segment
Acknowledgment
Question 7: In segment header, sequence number and acknowledgement number fields refer to _______
Byte number
Buffer number
Segment number
Acknowledgment
Question 9: Bytes of data being transferred in each connection are numbered by TCP. These numbers start with a _________
Fixed number
Random sequence of 0’s and 1’s
One
Sequence of zero’s and one’s
Question 10: The value of acknowledgement field in a segment defines _______
sequence number of the byte received previously
total number of bytes to receive
sequence number of the next byte to be received
sequence of zeros and ones
Question 11: The receiver of the data controls the amount of data that are to be sent by the sender is referred to as ___________
Flow control
Error control
Congestion control
Error detection
Question 12: Size of TCP segment header ranges between ___________
16 and 32 bytes
16 and 32 bits
20 and 60 bytes
20 and 60 bits
Question 13: Connection establishment in TCP is done by which mechanism?
Flow control
Three-Way Handshaking
Forwarding
Synchronization
Question 14: The server program tells its TCP that it is ready to accept a connection. This process is called ___________
Active open
Active close
Passive close
Passive open
Question 15: 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 ___________
Active open
Active close
Passive close
Passive open
Question 16: In Three-Way Handshaking process, the situation where both the TCP’s issue an active open is ___________
Mutual open
Mutual Close
Simultaneous open
Simultaneous close
Question 17: 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?
SYNC flooding attack
Active attack
Passive attack
Denial-of-service attack
Question 18: SYNC flooding attack belongs to a type of security attack known as ___________
SYNC flooding attack
Active attack
Passive attack
Denial-of-service attack
Question 19: The sizes of source and destination port address in TCP header are ___________ respectively.
16-bits and 32-bits
16-bits and 16-bits
32-bits and 16-bits
32-bits and 32-bits
Question 20: What allows TCP to detect lost segments and in turn recover from that loss?
Sequence number
Acknowledgment number
Checksum
Both Sequence & Acknowledgment number
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