Multiple Choice Questions & Answers on OSI Seven Layer model
Multiple Choice Questions & Answers on OSI Seven Layer model
Physical Layer Multiple Choice Questions & Answers
1. The physical layer provides __________
a) mechanical specifications of electrical connectors and cables
b) electrical specification of transmission line signal level
c) specification for IR over optical fiber
d) all of the mentioned
Answer: all of the mentioned
2. The physical layer is responsible for _________
a) line coding
b) channel coding
c) modulation
d) all of the mentioned
Answer: all of the mentioned
3. A single channel is shared by multiple signals by ____________
a) analog modulation
b) digital modulation
c) multiplexing
d) phase modulation
Answer: multiplexing
4. The physical layer is concerned with ___________
a) bit-by-bit delivery
b) process to process delivery
c) application to application delivery
d) port to port delivery
Answer: bit-by-bit delivery
5. In asynchronous serial communication the physical layer provides ___________
a) start and stop signalling
b) flow control
c) both start & stop signalling and flow control
d) only start signalling
Answer: both start & stop signalling and flow control
6. The portion of physical layer that interfaces with the media access control sublayer is called ___________
a) physical signalling sublayer
b) physical data sublayer
c) physical address sublayer
d) physical transport sublayer
Answer: physical signalling sublayer
7. Wireless transmission of signals can be done via ___________
a) radio waves
b) microwaves
c) infrared
d) all of the mentioned
Answer: all of the mentioned
8. Bits can be sent over guided and unguided media as analog signal by ___________
a) digital modulation
b) amplitude modulation
c) frequency modulation
d) phase modulation
Answer: digital modulation
9. The physical layer translates logical communication requests from the ______ into hardware specific operations.
a) data link layer
b) network layer
c) trasnport layer
d) application layer
Answer: data link layer
10. Which transmission media provides the highest transmission speed in a network?
a) coaxial cable
b) twisted pair cable
c) optical fiber
d) electrical cable
Answer: optical fiber
Data Link Layer Multiple Choice Questions & Answers
1. Automatic repeat request error management mechanism is provided by ________
a) logical link control sublayer
b) media access control sublayer
c) network interface control sublayer
d) application access control sublayer
Answer: logical link control sublayer
2. CRC stands for __________
a) cyclic redundancy check
b) code repeat check
c) code redundancy check
d) cyclic repeat check
Answer: cyclic redundancy check
3. The data link layer takes the packets from _________ and encapsulates them into frames for transmission.
a) network layer
b) physical layer
c) transport layer
d) application layer
Answer: network layer
4. The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________
a) piggybacking
b) cyclic redundancy check
c) fletcher’s checksum
d) parity check
Answer: piggybacking
5. Header of a frame generally contains ______________
a) synchronization bytes
b) addresses
c) frame identifier
d) all of the mentioned
Answer: all of the mentioned
6. When 2 or more bits in a data unit has been changed during the transmission, the error is called ____________
a) random error
b) burst error
c) inverted error
d) double error
Answer: burst error
7. Which of the following is the multiple access protocol for channel access control?
a) CSMA/CD
b) CSMA/CA
c) Both CSMA/CD & CSMA/CA
d) HDLC
Answer: Both CSMA/CD & CSMA/CA
8. Which of the following tasks is not done by data link layer?
a) framing
b) error control
c) flow control
d) channel coding
Answer: channel coding
9. Which of the following is a data link protocol?
a) ethernet
b) point to point protocol
c) hdlc
d) all of the mentioned
Answer: all of the mentioned
10. Which sublayer of the data link layer performs data link functions that depend upon the type of medium?
a) logical link control sublayer
b) media access control sublayer
c) network interface control sublayer
d) error control sublayer
Answer: media access control sublayer
11. Data link layer mainly deals with framing, error control and flow control.
a) true
b) false
Answer: true
Network Layer Multiple Choice Questions & Answers
1. A subset of a network that includes all the routers but contains no loops is called ________
a) spanning tree
b) spider structure
c) spider tree
d) special tree
Answer: spanning tree
2. A 4 byte IP address consists of __________
a) only network address
b) only host address
c) network address & host address
d) network address & MAC address
Answer: network address & host address
3. The network layer protocol for internet is __________
a) ethernet
b) internet protocol
c) hypertext transfer protocol
d) file transfer protocol
Answer: internet protocol
4. ICMP is primarily used for __________
a) error and diagnostic functions
b) addressing
c) forwarding
d) routing
Answer: error and diagnostic functions
5. In virtual circuit network each packet contains ___________
a) full source and destination address
b) a short VC number
c) only source address
d) only destination address
Answer: a short VC number
6. The network layer is concerned with __________ of data.
a) bits
b) frames
c) packets
d) bytes
Answer: packets
7. Which of the following routing algorithms can be used for network layer design?
a) shortest path algorithm
b) distance vector routing
c) link state routing
d) all of the mentioned
Answer: all of the mentioned
8. Which one of the following is not a function of network layer?
a) routing
b) inter-networking
c) congestion control
d) error control
Answer: error control
9. Which one of the following algorithm is not used for congestion control?
a) traffic aware routing
b) admission control
c) load shedding
d) routing information protocol
Answer: routing information protocol
10. Which of the following is not correct in relation to multi-destination routing?
a) is same as broadcast routing
b) contains the list of all destinations
c) data is not sent by packets
d) there are multiple receivers
Answer: data is not sent by packets
Transport Layer Multiple Choice Questions & Answers
1. Transmission control protocol ___________
a) is a connection-oriented protocol
b) uses a three way handshake to establish a connection
c) receives data from application as a single stream
d) all of the mentioned
Answer: all of the mentioned
2. Socket-style API for windows is called ____________
a) wsock
b) winsock
c) wins
d) sockwi
Answer: winsock
3. Transport layer aggregates data from different applications into a single stream before passing it to ____________
a) network layer
b) data link layer
c) application layer
d) physical layer
Answer: network layer
4. Transport layer protocols deals with ____________
a) application to application communication
b) process to process communication
c) node to node communication
d) man to man communication
Answer: process to process communication
5. User datagram protocol is called connectionless because _____________
a) all UDP packets are treated independently by transport layer
b) it sends data as a stream of related packets
c) it is received in the same order as sent order
d) it sends data very quickly
Answer: all UDP packets are treated independently by transport layer
6. An endpoint of an inter-process communication flow across a computer network is called __________
a) socket
b) pipe
c) port
d) machine
Answer: socket
7. A _____ is a TCP name for a transport service access point.
a) port
b) pipe
c) node
d) protocol
Answer: port
8. Which of the following is a transport layer protocol?
a) stream control transmission protocol
b) internet control message protocol
c) neighbor discovery protocol
d) dynamic host configuration protocol
Answer: stream control transmission protocol
9. Which one of the following is a version of UDP with congestion control?
a) datagram congestion control protocol
b) stream control transmission protocol
c) structured stream transport
d) user congestion control protocol
Answer: datagram congestion control protocol
10. Which of the following are transport layer protocols used in networking?
a) TCP and FTP
b) UDP and HTTP
c) TCP and UDP
d) HTTP and FTP
Answer: TCP and UDP
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