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
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. The destination address and source address field is similar to
- IEEE 802.3 or CSMA/CD bus
- IEEE 802.4 or token bus
- IEEE 802.5 or token ring
- IEEE 802.6 or MAN protocol
A. IEEE 802.3 or CSMA/CD bus
2. IPv4 Address is
- 8 bit
- 16 bit
- 32 bit
- 64 bit
C. 32 bit
3. Which function allows dumping of invalid packets for a specific network instead of forwarding
- Forwarding function
- Filtering function
- Both a & b
- None of these
B. Filtering function
4. The word SLIP stands for
- Serial Line IP
- Standard Line IP
- Serial Link IP
- Standard Link IP
A. Serial Line IP
5. What is the port number of the FTP
- 25
- 23
- 20/21
- 27960
C. 20/21
6. The SMDS is similar to which transfer mode
- Synchronous transfer mode
- Asynchronous transfer mode
- Both a & b
- None of these
B. Asynchronous transfer mode
7. PDUs contain
- Source address
- Destination address
- Both a & b
- None of these
C. Both a & b
8. Frame relay indicates network congestion using two flags namely ________ bits in data frames
- Forward Explicit Congestion Notification(FECN)
- Backward Explicit Congestion Notification(BECN)
- Both a & b
- None of these
C. Both a & b
9. ISDN is a group of __________ standards relating to digital transmission across conventional copper wire telephone lines, as also other media
- CCITT
- ITU
- Both a & b
- None of these
C. Both a & b
10. The B-channel is capable of carrying both
- Voice
- Data
- Both a & b
- None of these
C. Both a & b
Section-2
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. A form of modulation in which the amplitude of a carrier wave is varied in accordance with some characteristics of the modulating signal, is known as ___________
- angle modulation
- aloha
- amplitude modulation
- modem
C. amplitude modulation
2. Modulation in which two binary values are represented by two different amplitudes of the carrier frequency is known as ___________
- amplitude shift keying
- amplitude
- amplitude modulation
- aloha
A. amplitude shift keying
3. The simultaneous transmission of data to a number of stations is known as ____________
- broadcast
- bandwidth
- analog transmission
- aloha
A. broadcast
4. Which layer of OSI determines the interface of the system with the user?
- Network
- Application
- Data link
- Physical
B. Application
5. Which of the following condition is used to transmit two packets over a medium at the same time?
- Synchronous
- Collision
- Contention
- Asynchronous
B. Collision
6. Which of the following summation operation is performed on the bits to check an error-detecting code?
- Codec
- Coder-decoder
- Checksum
- Attenuation
C. Checksum
7. Frame relay operates in the _________
- application, presentation
- session, transport
- physical, data link
- data link, network
C. physical, data link
8. Repeaters function in the ________ layers
- application, presentation
- session, transport
- physical, data link
- data link, network
C. physical, data link
9. Which of the following is not a connecting device?
- Bridge
- Gateway
- Transceiver
- Hub
C. Transceiver
10. Which layer in the network supports Gateways?
- Lower 3
- Upper 4
- All 7 Layers
- All but the physical layer
C. All 7 Layers
