Data Communication and Networking MCQs offer a valuable resource to test and enhance your understanding of the intricate world of data transmission, network protocols, and communication technologies. Whether you’re a student preparing for exams or a professional aiming to strengthen your knowledge, these multiple-choice questions with Answers cover a wide spectrum of topics, including network architecture, protocols, and security. These MCQs will help students in university exams,competitive exams and interviews preparation.
Section-1
1. Modulation is the process of ________
- sending a file from one computer to another computer
- converts digital signals to analog signals
- converting analog signals to digital signals
- echoing every character that is received
2. Which one of the following is a data link protocol?
- ethernet
- point to point protocol
- HDLC
- all the above
3. Which of the following is used for modulation and demodulation?
- Modem
- Protocols
- Gateway
- Multiplexer
4. A software that allows a personal computer to pretend it as a terminal is _______
- auto dialing
- bulletin board
- modem
- terminal emulation
5. Which sublayer of the data link layer performs data link functions that depend upon the type of medium?
- logical link control sublayer
- media access control sublayer
- network interface control sublayer
- none of the mentioned
6. Which layer of OSI model is responsible for creating and recognizing frame boundaries?
- Physical layer
- Data link layer.
- Transport layer
- Network layer
7. If digital data rate of 9600 bps is encoded using 8 – level phase shift keying (PSK) method, the modulation rate is ______
- 1200 bands
- 3200 bands
- 4800 bands
- 9600 bands
8. Four bits are used for packet sequence numbering in a sliding window protocol. What is the maximum window size?
- 4
- 8
- 15
- 16
9. Header of a frame generally contains
- synchronization bytes
- addresses
- frame identifier
- all the above
10. The ________ model shows how the network functions of a computer ought to be organized.
- CCITT
- OSI
- ISO
- ANSI
Section-2
1. An endpoint of an inter-process communication flow across a computer network is called
- socket
- pipe
- port
- none of the mentioned
2. Which of the following is not used in Local Area Networks (LAN)?
- Computer
- Printer
- Modem
- Cable
3. Communication between computers almost always ________
- serial
- series parallel.
- parallel
- direct
4. The_____ flag indicates that the entry of the destination column is a host-specific address.
- gateway
- host-specific.
- modified by redirection.
- added by redirection
5. The IP address is assigned ________
- randomly
- alternatively
- area wise.
- hierarchically
6. Most of the internet users are on a class ________ network
- A
- B
- C
- D
7. Transport layer aggregates data from different applications into a single stream before passing it to
- network layer
- data link layer
- application layer
- physical layer
8. TCP/IP reserve _______ ports for protocols.
- 21
- 24
- 1024
- 2042
9. IPV4 uses ______ bit value to represent address.
- 128
- 64
- 32
- 16
10. The _______ flag indicates that a redirection message has added a new entry to the routing table.
- gateway
- host-specific
- modified by redirection
- added by redirection.