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. Number of bits per symbol used in Baudot code is _______
- 7
- 8
- 5
- 9
C. 5
2. How much power a light emitting diode can couple into an optical fiber?
- 100 microwatts
- 440 microwatts
- 10 milliwatts
- 100 picowatts
A. 100 microwatts
3. The transmission signal coding method of TI carrier is called _________
- bipolar
- machester
- nrz
- binary
A. bipolar
4. Which data communication method is used to transmit the data over a serial communication link?
- Simplex
- Full duplex.
- Half duplex
- Bi flex
B. Full duplex.
5. The receive equalizer reduces delay distortions using ________
- tapped delay lines
- gearshift
- descrambler
- difference edging
B. gearshift
6. In communication satellite, multiple repeaters are known as
- detector
- modulator
- stations
- transponders
D. transponders
7. In a synchronous modem, the receive equalizer is known as ___________ analyzer.
- adaptive
- statistical
- impairment
- compromise
A. adaptive
8. Which of the following systems provides the highest data rate to an individual device?
- Computer bus
- Telephone lines.
- Leased lines.
- Voice band modem.
A. Computer bus
9. While transmitting odd -parity coded symbols, the number of zero in each symbol is _______
- odd
- one
- even
- unknown
D. unknown
10. A protocol is a set of rules governing a time sequence of events that must take place _________
- between peers
- between an interface
- between modems
- across an interface
A. between peers
Section-2
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. What is the main function of the transport layer?
- Node-To-Node Delivery
- Process-To-Process Message Delivery
- Synchronization
- Updating And Maintenance Of Routing Tables
B. Process-To-Process Message Delivery
2. Session layer checkpoints _____
- allow just a portion of a file to be resent
- control the addition of the headers
- detect and recover errors
- are involved in dialog control
A. allow just a portion of a file to be resent
3. To deliver a message to the correct application program running on a host , the _______ address must be consulted.
- port
- IP
- physical
- tunnel
A. port
4. When a host on network A sends a message to a host on network B, which address does the router look at?
- Port
- Physical
- IP
- Tunnel
C. IP
5. Which of the following is possible in a taken passing bus network?
- In-service expansion
- Unlimited number of stations
- Unlimited distance
- Limited distance
A. In-service expansion
6. One important characteristics of the hub architecture of ARC-net is
- directionalized transmission
- access control and addressing
- multiple virtual networks
- alternative routing.
A. directionalized transmission
7. What is the main purpose of a data link content mirror?
- To detect problems in protocol
- To determine the type of switching used in a data link
- To determine the type of transmission used in a data link
- To determine the flow of data.
A. To detect problems in protocol
8. Which of the following is not a standard synchronous communication protocol?
- SDLC
- SLIP
- SMTP
- PAS
D. PAS
9. IPV6 has _____ bit addresses.
- 32
- 4
- 128
- variable
C. 128
10. In fiber optics,the signal source is ______ waves.
- light
- infrared
- radio
- very low frequency.
A. light
