MCQ in Computer Network and Networking Part 17 | ECE Board Exam

(Last Updated On: January 7, 2023)

This is the Multiple Choice Questions Part 17 of the Series on Computer Network and Networking as one of the Communication Engineering (EST) and Electronics Engineering topics. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize yourself in each and every question compiled here taken from various sources including but not limited to past Board Exam Questions in Communication Engineering and Electronics Engineering field, Communications Books, Electronics Books, Journals and other Communications and Electronics References.

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⇐ MCQ in Computer Network and Networking Part 16 | ECE Board Exam

Choose the letter of the best answer in each question.

801. The number of layers in ISO OSI reference model is

A. 5

B. 7

C. 6

D. 10

802. Which of the following layers is an addition to OSI model when compared with TCP IP model?

A. Application layer

B. Presentation layer

C. Session layer

D. Session and Presentation layer

803. The functionalities of the presentation layer include

A. Data compression

B. Data encryption

C. Data description

D. All of the mentioned

804. Delimiting and synchronization of data exchange is provided by

A. Application layer

B. Session layer

C. Transport layer

D. Link layer

805. In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is

A. Application layer

B. Transport layer

C. Link layer

D. Session layer

806. In TCP IP Model, when data is sent from device A to device B, the 5th layer to receive data at B is

A. Application layer

B. Transport layer

C. Link layer

D. Session layer

807. Which layer is used to link the network support layers and user support layers?

A. Session layer

B. Data link layer

C. Transport layer

D. Network layer

808. OSI stands for

A. Open system interconnection

B. Operating system interface

C. Optical service implementation

D. Open service Internet

809. Which Project 802 standard provides for a collision-free protocol?

A. 802.2

B. 802.3

C. 802.5

D. 802.6

810. The protocol data unit (PDU) for the application layer in the Internet stack is

A. Segment

B. Datagram

C. Message

D. Frame

811. What is a Firewall in Computer Network?

A. The physical boundary of Network

B. An operating System of Computer Network

C. A system designed to prevent unauthorized access

D. A web browsing Software

812. Which of the following services is not provided by wireless access point in 802.11 WLAN?

A. Association

B. Disassociation

C. Error correction

D. Integration

813. Bridge works in which layer of the OSI model?

A. Application layer

B. Transport layer

C. Network layer

D. Data link layer

814. Why IP Protocol is considered as unreliable?

A. A packet may be lost

B. Packets may arrive out of order

C. Duplicate packets may be generated

D. All of the above

815. What are the uses of subnetting?

A. It divides one large network into several smaller ones

B. It divides network into network classes

C. It speeds up the speed of network

D. None of above

816. The Internet is an example of

A. Cell switched network

B. circuit switched network

C. Packet switched network

D. All of above

817. What does protocol defines?

A. Protocol defines what data is communicated.

B. Protocol defines how data is communicated.

C. Protocol defines when data is communicated.

D. All of these

818. What is the use of Ping command?

A. To test a device on the network is reachable

B. To test a hard disk fault

C. To test a bug in an Application

D. To test a Pinter Quality

819. What is the Demilitarized Zone?

A. The area between firewall & connection to an external network

B. The area between ISP to Military area

C. The area surrounded by secured servers

D. The area surrounded by the Military

820. The combination of an IP address and a port number is known as.

A. network number

B. socket address

C. subnet mask number

D. MAC address

821. Which of the following is reliable communication?

A. TCP

B. IP

C. UPD

D. All of them

822. What is the size of Host bits in Class B of IP address?

A. 04

B. 08

C. 16

D. 32

823. Which of the following is not associated with the session layer?

A. Dialog control

B. Token management

C. Semantics of the information transmitted

D. Synchronization

824. The Internet Control Message Protocol (ICMP)

A. allows gateways to send error a control messages to other gateways or hosts

B. provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another

C. reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem

D. All of the above

825. Your company has a LAN in its downtown office and has now set up a LAN in the manufacturing plant in the suburbs. To enable everyone to share data and resources between the two LANs, what type of device(s) are needed to connect them? Choose the most correct answer.

A. Modem

B. Cable

C. Hub

D. Router

826. Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another?

A. FTP

B. SNMP

C. SMTP

D. RPC

827. Which of the following device is used to connect two systems, especially if the systems use different protocols?

A. hub

B. bridge

C. gateway

D. repeater

828. can detect burst error of length less than or equal to degree of the polynomial and detects burst errors that affect odd number of bits.

A. Hamming Code

B. CRC

C. VRC

D. None of the above

829. The PSTN is an example of a ________ network.

A. packet switched

B. circuit switched

C. message switched

D. None of these

830. When and where RARP is used intentionally or effectively?

A. At the time of network booting where no space to store IP address (or diskless network) for address resolution.

B. In broadcasting to get IP address of Network.

C. To get the access in private network whenever it is required.

D. None of the above.

831. Which one 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

832. 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. none of the mentioned

833. ICMP is primarily used for:

A. error and diagnostic functions

B. addressing

C. forwarding

D. none of the mentioned

834. 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. both (a) and (b)

D. none of the mentioned

835. An endpoint of an inter-process communication flow across a computer network is called:

A. socket

B. pipe

C. port

D. none of the mentioned

836. A is a TCP name for a transport service access point.

A. port

B. pipe

C. node

D. none of the mentioned

837. Which one 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

838. 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

839. The translates internet domain and host names to IP address.

A. domain name system

B. routing information protocol

C. network time protocol

D. internet relay chat

840. When displaying a web page, the application layer uses the:

A. HTTP protocol

B. FTP protocol

C. SMTP protocol

D. none of the mentioned

841. This is a time-sensitive service:

A. File transfer

B. File download

C. E-mail

D. Internet telephony

842. Packet sniffers involve:

A. Active receiver

B. Passive receiver

C. Both of the mentioned

D. None of the mentioned

843. Identify the incorrect statement:

A. FTP stands for File Transfer Protocol

B. FTP uses two parallel TCP connections

C. FTP sends its control information in-band

D. FTP sends exactly one file over the data connection

844. If 5 files are transferred from server A to client B in the same session. The number of TCP connection between A and B is:

A. 5

B. 10

C. 2

D. 6

845. Find the FTP reply whose message is wrongly matched:

A. 331 – Username OK, password required

B. 425 – Can’t open data connection

C. 452 – Error writing file

D. 452 – Can’t open data connection

846. In an Ethernet local area network, which one of the following statements is True?

A. A station stops to sense the channel once it starts transmitting a frame.

B. The purpose of the jamming signal is to pad the frames that are smaller than the minimum frame size.

C. A station continues to transmit the packet even after the collision is detected.

D. The exponential back off mechanism reduces the probability of collision on retransmissions

847. The first Network:

A. CNNET

B. NSFNET

C. ASAPNET

D. ARPANET

848. Which organization has authority over interstate and international commerce in the communications field?

A. ITU-T

B. IEEE

C. FCC

D. ISOC

849. Baud rate is:

A. number of signal changes per second

B. number of bits per second

C. number of bytes per second

D. number of ASCII characters per second

850. The slowest transmission speeds are those of

A. Coaxial cable

B. Twisted pair wire

C. Fiber-optic cable

D. Microwave

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