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. The OSI model consists of ______ layers.
- 3
- 5
- 7
- 8
2. The physical layer is concerned with the transmission of ______ over the physical medium.
- programs
- dialogs
- protocols
- bits
3. As a data packet moves from the lower to the upper layers, headers are _____
- added
- subtracted
- rearranged
- modified
4. Which layer functions as a liaison between user support layers and network support layers?
- Physical
- Network
- Transport
- Session
5. When data is transmitted from device A to device B, the header from A’s layer 5 is read by B’s ____________ layer.
- physical
- network
- transport
- session
6. Demodulation is the process of _________
- sending a file from one computer to another computer.
- converting digital signals to analog signals
- converting analog signals to digital signals
- echoing every character that is received
7. Many low -speed channels are interwoven into one high- speed transmission by a __________
- time division multiplexer
- frequency division multiplexer
- code division multiplexer
- repeaters
8. CRC stands for
- cyclic redundancy check
- code repeat check
- code redundancy check
- cyclic repeat check
9. To connect a computer with a device in the same room user will likely to use ___________
- coaxial cable
- ground station
- dedicated line
- fibre optic cable
10. The slowest transmission speeds are those of ________
- twisted pair
- coaxial cable.
- microwaves
- fibre optic cables.
Section-2
1. In the domain name chal.atc.fhda.edu _______ is the most specific label.
- chal
- atc
- edu
- fhda
2. In the domain name chal.atc.fhda.edu ________ is the least specific label.
- chal
- atc
- edu
- fhda
3. Identify the Odd term among the following group.
- Optical Fiber
- Twisted Pair.
- Coaxial Cable.
- Microwaves
4. Which is not an example for analog communication __________ .
- microwave
- laser beam
- voice grade telephone line
- Light Wave
5. Which one of the following is a transport layer protocol used in internet?
- TCP
- UDP
- both (a) and (b)
- none of the above
6. Which among the following is not a guided transmission media?
- Optical Fiber
- Twisted Pair
- Coaxial Cable
- Microwaves
7. A sub division of main storage created by operational software is referred to as ________
- compartment
- time-shared program
- divided core
- partition
8. An example of a medium- speed, switched communications service is _________
- Series 1000
- Dataphone 50
- DDD
- Default
9. In address-to-name resolution the _______ domain is used.
- inverse
- generic
- country
- reverse
10. Which of the following is an advantage to using fiber optics data transmission?
- Resistance to data theft
- Fast data transmission rate
- Low noise level
- Few transmission errors