Free Networking and Internet MCQs with Answers
452 Networking and Internet MCQs from Computer Science and IT, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Networking covers LAN, MAN, WAN and wireless networks, network topologies, transmission media, devices such as switches, routers and modems, and the OSI and TCP/IP models. Internet concepts include IP addresses, DNS, URLs, web browsers, email, protocols such as HTTP, HTTPS, FTP and SMTP, and basic network security.
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452 questions · page 13 of 23
- A. 10 miles
- B. 20 miles
- C. 25 miles
- D. 30 miles
Explanation: The correct answer is B. 20 miles (or a range of 10 to 30 miles). Factors Affecting Microwave Transmission Distance:The actual distance…
Correct answer: 20 miles- A. Higher bandwidth
- B. Less susceptible to interference
- C. Easier to install
- D. Lower cost
Explanation: The answer is B) Less susceptible to interference.
Correct answer: Less susceptible to interference- A. Twisted pair
- B. Coaxial
- C. Fiber Optic
- D. Satellite
- E. All of these
Explanation: All of these options (A, B, C, and D) are unguided media. Unguided media refers to transmission methods that use air, water, or space as…
Correct answer: All of these- A. 1000 miles
- B. 2000 miles
- C. 23,300 miles
- D. 30,000 miles
Explanation: The least significant bit (LSB) is transmitted first in most asynchronous serial communication protocols.
Correct answer: 23,300 miles- A. RJ-11
- B. RJ-45
- C. USB
- D. Coaxial
Explanation: USB (Universal Serial Bus) connectors are the standard interface for connecting a wide variety of devices to a computer, including…
Correct answer: USB- A. Satellite communication
- B. Baseband
- C. Broadband
- D. Time division multiplexing
Explanation: Baseband for Direct, High-Speed ConnectionsBaseband transmission refers to a method where the data signal occupies the entire bandwidth of…
Correct answer: Baseband- A. Wireless signal
- B. Telephone
- C. Wi-Fi
- D. Digital data transmission
Explanation: Twisted-pair cable was invented by Alexander Graham Bell in 1881 specifically to reduce crosstalk between telegraph wires.
Correct answer: Telephone- A. Asynchronous transmission
- B. TDM (Time Division Multiplexing)
- C. Parallel transmission
- D. Synchronous transmission
Explanation: Asynchronous transmission is a data transmission method that sends data one character or byte at a time.
Correct answer: Asynchronous transmission- A. Simplex
- B. Half duplex
- C. Full duplex
- D. Reverse duplex
Explanation: Half duplex transmission allows data to travel in both directions, but only in one direction at a time.
Correct answer: Half duplex- A. Communication Channel
- B. Decoder
- C. Encoder
- D. Self-Testing
Explanation: This is the physical path through which data travels from a source to a receiver. It can be wired or wireless.
Correct answer: Communication Channel251. What are the elements of a data communication system except sender, receiver, medium, and voltage?
- A. Sender
- B. Receiver
- C. Medium
- D. voltage
Explanation: Voltage is not an element of a data communication system. While electrical signals are used to transmit data, the specific voltage level…
Correct answer: voltage- A. 128
- B. 256
- C. 512
- D. 1024
Explanation: ASCII (American Standard Code for Information Interchange) is a character encoding standard that uses 7 bits to represent 128 different…
Correct answer: 128- A. Volt (V)
- B. Hertz (Hz)
- C. Digits
- D. Watts (W)
Explanation: The unit of electrical potential difference (voltage). It is the measure of the force that will drive a current through a conductor.
Correct answer: Volt (V)- A. Information
- B. signal
- C. Sender
- D. Frequency
Explanation: In data transmission, a signal is a physical representation of data that can be transmitted over a communication channel.
Correct answer: signal- A. Data processing
- B. Data Communication
- C. Data Sequencing
- D. Data Sender
Explanation: This is the process of transferring data electronically between two or more devices.
Correct answer: Data Communication- A. BCD (Binary Coded Decimal)
- B. Base Coded Decimal
- C. Non-volatile Memory
- D. Bidirectional Coded Decimal
Explanation: BCD (Binary Coded Decimal) is a method for representing decimal digits (0-9) using binary code.
Correct answer: BCD (Binary Coded Decimal)- A. Asynchronous Transmission
- B. Synchronous Transmission
- C. Isochronous Transmission
- D. Monochromes Transmission
Explanation: Flow control is a mechanism employed in asynchronous transmission to regulate the data flow between sender and receiver.
Correct answer: Asynchronous Transmission- A. Pulse
- B. Amplitude
- C. Frequency
- D. Frequency band
Explanation: Frequency is a measure of how often a wave repeats over a unit of time.
Correct answer: Frequency- A. Modulation
- B. Demodulation
- C. Digitization
- D. Conversion
Explanation: This is the process of converting a modulated signal back into its original form.
Correct answer: Demodulation- A. ASCIl
- B. EBCDIC (Extended Binary Coded Decimal Interchange Code)
- C. BCD
- D. Unicod
Explanation: EBCDIC (Extended Binary Coded Decimal Interchange Code) is a character encoding scheme historically used by IBM on its mainframe computers…
Correct answer: EBCDIC (Extended Binary Coded Decimal Interchange Code)