This set of objective questions on the transport layer includes the collections of MCQ questions on fundamentals of the transport layer in the OSI model. It includes objective questions on the task of the transport layer, transport entity, connection establishment delay, transport protocol data unit, well-known port numbers, and ephemeral port numbers related to the transport layer in the OSI model.
1) The ………. is responsible for end to end delivery, segmentation, and concatenation.
A. Physical layer
B. Data Link layer
C. Network layer
D. Transport layer
2) ………. needs ports or service access points.
A. Physical layer
B. Data Link layer
C. Network layer
D. Transport layer
3) The task of …………… is to provide reliable, cost-effective transport of data from the source machine to the destination machine.
A. Network Layer
B. Transport Layer
C. Presentation Layer
D. Application Layer
4) The hardware and/or software within the transport layer which does the work of making use of the services provided by the network layer is called as ………
A. transport media
B. transport device
C. transport entity
D. network transporter
5) ………. measures the number of bytes of user data transferred per second, measured over some time interval. It is measured separately for each direction.
A. Throughput
B. Transit delay
C. Protection
D. Resilience
6) ………… is the time between a message being sent by the transport user on the source machine and its being received by the transport user on the destination machine.
A. Throughput
B. Transit delay
C. Protection
D. Resilience
7) The time difference between the instant at which a transport connection is requested and the instant at which it is confirmed is called……..
A. Connection establishment delay
B. Transit delay
C. Protection delay
D. Priority delay
Table of Contents
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8) The message sent from transport entity to transport entity is called as ……….
A. transport data unit
B. transport display data unit
C. transport protocol data unit
D. transport protocol display unit
9) …….. are designed for the protocols like ICMP or OSPF, because these protocols do not use either stream packets or datagram sockets.
A. Berkeley sockets
B. Stream sockets
C. Datagram sockets
D. Raw sockets
10) ………. is designed for the connectionless protocol such as User Datagram Protocol(UDP).
A. Berkeley socket
B. Stream socket
C. Datagram socket
D. Raw socket
11) ………… is designed for the connection oriented protocol such as Transmission Control Protocol(TCP).
A. Berkeley socket
B. Stream socket
C. Datagram socket
D. Raw socket
12) ………… is used to implement the transport layer services between the two transport entities.
A. Transport service
B. Transport protocol
C. Transport address
D. Transport control
13) Which of the following is/are the tasks of transport protocols.
A. Error control
B. Sequencing
C. Flow control
D. All of the above
14) The internet uses universal port numbers for services and these numbers are called as …….
A. Well known port numbers
B. Fixed port numbers
C. Standard port numbers
D. Ephemeral port numbers
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15) In the internet model, the client program defines itself with a port number that is chosen randomly. This number is called…….
A. Well known port numbers
B. Fixed port numbers
C. Standard port numbers
D. Ephemeral port numbers
16) The port numbers ……….. are known as well known ports and they are reserved for standard circuits.
A. below 1024
B. above 1024
C. below 2048
D. below 512
17) In the TCP segment header, ………. is a 32-bit number identifying the current position of the first data byte in the segment within the entire byte stream for the TCP connection.
A. serial number
B. current number
C. sequence number
D. acknowledgement number
18) In the TCP segment header, ………. is a 32-bit number identifying the next data byte the sender expects from the receiver.
A. serial number
B. current number
C. sequence number
D. acknowledgment number
19) A …….. is a special type of file handle, which is used by a process to request network services from the operating system.
A. socket
B. handler
C. requester
D. protocol
20) …….. is an optional 16-bit one’s complement of the one’s complement sum of a pseudo-IP header, the UDP header, and the UDP data.
A. Congestion
B. Checksum
C. Pseudosum
D. Headersum
Answers:
1) D. Transport layer
2) D. Transport layer
3) B. Transport Layer
4) C. transport entity
5) A. Throughput
6) B. Transit delay
7) A. Connection establishment delay
8) C. transport protocol data unit
9) D. Raw sockets
10) C. Datagram socket
11) B. Stream socket
12) B. Transport protocol
13) D. All of the above
14) A. Well known port numbers
15) D. Ephemeral port numbers
16) A. below 1024
17) C. sequence number
18) D. acknowledgment number
19) A. socket
20) B. Checksum
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