set-2

51. In which layer of the TCP/IP model do transmission media (e.g., Ethernet cable, Wi-Fi, etc.) operate?

1. Network Access layer

2. Internet layer

3. Application layer

4. Transport layer

Show me the answer

Answer: 1. Network Access layer

Explanation:

• Transmission media operate at the Network Access layer of the TCP/IP model.

52. In which layer of the TCP/IP model do protocols such as TCP, UDP, and IP operate?

1. Network Access layer

2. Internet layer

3. Application layer

4. Transport layer

Show me the answer

Answer: 4. Transport layer

Explanation:

• TCP and UDP operate at the Transport layer, while IP operates at the Internet layer.

53. What is the main type of transmission media used for twisted pair cables?

1. Optical fiber

2. Copper wire

3. Wireless

4. Coaxial cable

Show me the answer

Answer: 2. Copper wire

Explanation:

• Twisted pair cables use copper wires for data transmission.

54. What is the main advantage of using twisted pair cables in a network?

1. They are expensive

2. They are less susceptible to interference compared to other types of transmission media

3. They are not widely used

4. They are not suitable for high-speed data transmission

Show me the answer

Answer: 2. They are less susceptible to interference compared to other types of transmission media

Explanation:

• Twisted pair cables are less susceptible to electromagnetic interference due to their twisted design.

55. What type of signals can be transmitted over twisted pair cables?

1. Optical signals

2. Electrical signals

3. Wireless signals

4. Radio signals

Show me the answer

Answer: 2. Electrical signals

Explanation:

• Twisted pair cables transmit electrical signals.

56. What is the maximum distance that data can be transmitted over twisted pair cables?

1. 100 meters

2. 500 meters

3. 1000 meters

4. 5000 meters

Show me the answer

Answer: 1. 100 meters

Explanation:

• The maximum distance for twisted pair cables is typically 100 meters.

57. What is the main disadvantage of using twisted pair cables in a network?

1. They are susceptible to interference

2. They are expensive

3. They are not widely used

4. They are not suitable for high-speed data transmission

Show me the answer

Answer: 1. They are susceptible to interference

Explanation:

• Twisted pair cables are susceptible to electromagnetic interference, especially over long distances.

58. What is the main type of transmission media used for coaxial cables?

1. Optical fiber

2. Copper wire

3. Wireless

4. Coaxial cable

Show me the answer

Answer: 2. Copper wire

Explanation:

• Coaxial cables use copper wires for data transmission.

59. What is the main advantage of using coaxial cables in a network?

1. They are highly resistant to interference compared to other types of transmission media

2. They are expensive

3. They are not widely used

4. They are not suitable for high-speed data transmission

Show me the answer

Answer: 1. They are highly resistant to interference compared to other types of transmission media

Explanation:

• Coaxial cables are highly resistant to electromagnetic interference due to their shielding.

60. What type of signals can be transmitted over coaxial cables?

1. Optical signals

2. Electrical signals

3. Wireless signals

4. Radio signals

Show me the answer

Answer: 2. Electrical signals

Explanation:

• Coaxial cables transmit electrical signals.

61. What is the maximum distance that data can be transmitted over coaxial cables?

1. 100 meters

2. 500 meters

3. 1000 meters

4. 5000 meters

Show me the answer

Answer: 2. 500 meters

Explanation:

• The maximum distance for coaxial cables is typically 500 meters.

62. What is the main disadvantage of using coaxial cables in a network?

1. They are expensive

2. They are not widely used

3. They are difficult to install and terminate

4. They are not suitable for high-speed data transmission

Show me the answer

Answer: 3. They are difficult to install and terminate

Explanation:

• Coaxial cables are more difficult to install and terminate compared to twisted pair cables.

63. What is the main type of transmission media used for optical fibers?

1. Optical fiber

2. Copper wire

3. Wireless

4. Coaxial cable

Show me the answer

Answer: 1. Optical fiber

Explanation:

• Optical fibers use light signals for data transmission.

64. What is the main advantage of using optical fibers in a network?

1. They are highly resistant to interference compared to other types of transmission media

2. They are fast and efficient for high-speed data transmission

3. They are not widely used

4. They are expensive

Show me the answer

Answer: 2. They are fast and efficient for high-speed data transmission

Explanation:

• Optical fibers are fast and efficient for high-speed data transmission.

65. What type of signals can be transmitted over optical fibers?

1. Optical signals

2. Electrical signals

3. Wireless signals

4. Radio signals

Show me the answer

Answer: 1. Optical signals

Explanation:

• Optical fibers transmit light signals.

66. What is the maximum distance that data can be transmitted over optical fibers?

1. 100 meters

2. 500 meters

3. 1000 meters

4. 5000 meters

Show me the answer

Answer: 4. 5000 meters

Explanation:

• The maximum distance for optical fibers is typically 5000 meters.

67. What is the main disadvantage of using optical fibers in a network?

1. They are expensive

2. They are difficult to install and terminate

3. They are not widely used

4. They are susceptible to interference

Show me the answer

Answer: 1. They are expensive

Explanation:

• Optical fibers are more expensive compared to other types of transmission media.

68. Which type of transmission media uses physical cables to transmit signals?

1. Guided media

2. Unguided media

3. Wireless media

4. Both a and b

Show me the answer

Answer: 1. Guided media

Explanation:

• Guided media use physical cables to transmit signals.

69. Which type of transmission media uses the air or a vacuum to transmit signals?

1. Guided media

2. Unguided media

3. Wireless media

4. Both a and b

Show me the answer

Answer: 2. Unguided media

Explanation:

• Unguided media use the air or a vacuum to transmit signals.

70. What is the main type of transmission used for microwave communication?

1. Radio waves

2. Optical signals

3. Infrared signals

4. Ultraviolet signals

Show me the answer

Answer: 1. Radio waves

Explanation:

• Microwave communication uses radio waves for data transmission.

71. What is the main advantage of using microwave transmission in a network?

1. It is highly resistant to interference compared to other types of transmission

2. It is fast and efficient for high-speed data transmission

3. It is not widely used

4. It is expensive

Show me the answer

Answer: 2. It is fast and efficient for high-speed data transmission

Explanation:

• Microwave transmission is fast and efficient for high-speed data transmission.

72. What type of devices are used for microwave transmission in a network?

1. Microwave towers

2. Optical fiber devices

3. Infrared devices

4. Radio devices

Show me the answer

Answer: 1. Microwave towers

Explanation:

• Microwave towers are used for microwave transmission in a network.

73. What is the frequency range of microwave transmission in a network?

1. 3 GHz to 30 GHz

2. 30 MHz to 300 MHz

3. 300 MHz to 3 GHz

4. 3 GHz to 300 GHz

Show me the answer

Answer: 1. 3 GHz to 30 GHz

Explanation:

• Microwave transmission operates in the frequency range of 3 GHz to 30 GHz.

74. What is the main disadvantage of using microwave transmission in a network?

1. It is susceptible to interference

2. It is expensive

3. It requires line-of-sight between the transmitting and receiving devices

4. It is not widely used

Show me the answer

Answer: 3. It requires line-of-sight between the transmitting and receiving devices

Explanation:

• Microwave transmission requires a clear line-of-sight between the transmitting and receiving devices.

75. What is the main type of transmission used for radio wave communication?

1. Radio waves

2. Optical signals

3. Infrared signals

4. Ultraviolet signals

Show me the answer

Answer: 1. Radio waves

Explanation:

• Radio wave communication uses radio waves for data transmission.

76. What is the main advantage of using radio waves in a network?

1. They are highly resistant to interference compared to other types of transmission

2. They are fast and efficient for high-speed data transmission

3. They are widely used

4. They are inexpensive

Show me the answer

Answer: 3. They are widely used

Explanation:

• Radio waves are widely used for wireless communication.

77. What type of devices are used for radio wave transmission in a network?

1. Radio towers

2. Optical fiber devices

3. Infrared devices

4. Microwave devices

Show me the answer

Answer: 1. Radio towers

Explanation:

• Radio towers are used for radio wave transmission in a network.

78. What is the frequency range of radio waves in a network?

1. 3 GHz to 30 GHz

2. 30 MHz to 300 MHz

3. 300 MHz to 3 GHz

4. 3 GHz to 300 GHz

Show me the answer

Answer: 2. 30 MHz to 300 MHz

Explanation:

• Radio waves operate in the frequency range of 30 MHz to 300 MHz.

79. What is the main disadvantage of using radio waves in a network?

1. They are susceptible to interference

2. They are expensive

3. They require line-of-sight between the transmitting and receiving devices

4. They are not suitable for high-speed data transmission

Show me the answer

Answer: 1. They are susceptible to interference

Explanation:

• Radio waves are susceptible to interference from other devices and environmental factors.

80. What is the main function of the Data Link layer?

1. To provide reliable transmission of data over the physical layer

2. To provide fast transmission of data over the physical layer

3. To provide secure transmission of data over the physical layer

4. To provide efficient transmission of data over the physical layer

Show me the answer

Answer: 1. To provide reliable transmission of data over the physical layer

Explanation:

• The Data Link layer ensures reliable data transmission over the physical layer.

81. What is the main purpose of error detection and correction in the Data Link layer?

1. To detect and correct errors in the data transmission

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To detect and correct errors in the data transmission

Explanation:

• Error detection and correction ensure that data is transmitted accurately and without errors.

82. What is the main function of flow control in the Data Link layer?

1. To control the flow of data transmission to prevent overflow of the receiving device's buffer

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To control the flow of data transmission to prevent overflow of the receiving device's buffer

Explanation:

• Flow control prevents the receiving device's buffer from overflowing by regulating the flow of data.

83. What is an example of a Data Link layer protocol?

1. TCP

2. UDP

3. IP

4. HDLC

Show me the answer

Answer: 4. HDLC

Explanation:

• HDLC (High-Level Data Link Control) is a Data Link layer protocol.

84. What is the main function of multiple access protocols in the Data Link layer?

1. To regulate access to the shared transmission medium

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To regulate access to the shared transmission medium

Explanation:

• Multiple access protocols regulate access to the shared transmission medium to prevent collisions.

85. What is the main function of LAN addressing in the Data Link layer?

1. To provide unique addresses to devices on a local area network

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To provide unique addresses to devices on a local area network

Explanation:

• LAN addressing assigns unique MAC addresses to devices on a local area network.

86. What is the main function of ARP (Address Resolution Protocol) in the Data Link layer?

1. To map IP addresses to physical addresses (MAC addresses)

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To map IP addresses to physical addresses (MAC addresses)

Explanation:

• ARP maps IP addresses to MAC addresses to enable communication between devices on a network.

87. What is Ethernet in the context of the Data Link layer?

1. A type of multiple access protocol

2. A type of LAN addressing scheme

3. A type of error detection and correction scheme

4. A popular and widely used LAN technology

Show me the answer

Answer: 4. A popular and widely used LAN technology

Explanation:

• Ethernet is a widely used LAN technology that operates at the Data Link layer.

88. What is the IEEE 802.3 standard in the context of the Data Link layer?

1. The standard for Ethernet

2. The standard for Token Bus

3. The standard for Token Ring

4. The standard for CSMA/CD

Show me the answer

Answer: 1. The standard for Ethernet

Explanation:

• IEEE 802.3 is the standard for Ethernet.

89. What is the IEEE 802.4 standard in the context of the Data Link layer?

1. The standard for Ethernet

2. The standard for Token Bus

3. The standard for Token Ring

4. The standard for CSMA/CD

Show me the answer

Answer: 2. The standard for Token Bus

Explanation:

• IEEE 802.4 is the standard for Token Bus.

90. What is the IEEE 802.5 standard in the context of the Data Link layer?

1. The standard for Ethernet

2. The standard for Token Bus

3. The standard for Token Ring

4. The standard for CSMA/CD

Show me the answer

Answer: 3. The standard for Token Ring

Explanation:

• IEEE 802.5 is the standard for Token Ring.

91. What is the main function of CSMA /CD in the Data Link layer?

1. To regulate access to the shared transmission medium in Ethernet networks

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To regulate access to the shared transmission medium in Ethernet networks

Explanation:

• CSMA/CD (Carrier Sense Multiple Access with Collision Detection) regulates access to the shared transmission medium in Ethernet networks.

92. What is the main function of Wireless LANs in the Data Link layer?

1. To provide wireless communication over a local area network

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To provide wireless communication over a local area network

Explanation:

• Wireless LANs provide wireless communication over a local area network.

93. What is the main function of PPP (Point to Point Protocol) in the Data Link layer?

1. To provide reliable transmission of data over a point-to-point connection

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To provide reliable transmission of data over a point-to-point connection

Explanation:

• PPP provides reliable data transmission over point-to-point connections.

94. What is the main function of Wide area protocols in the Data Link layer?

1. To provide reliable transmission of data over wide area networks

2. To provide fast transmission of data

3. To provide secure transmission of data

4. To provide efficient transmission of data

Show me the answer

Answer: 1. To provide reliable transmission of data over wide area networks

Explanation:

• Wide area protocols provide reliable data transmission over wide area networks.

95. What is the main purpose of error detection in a network?

1. To detect errors in the data transmission

2. To correct errors in the data transmission

3. Both a and b

4. Neither a nor b

Show me the answer

Answer: 1. To detect errors in the data transmission

Explanation:

• Error detection identifies errors in data transmission.

96. What is the main purpose of error correction in a network?

1. To detect errors in the data transmission

2. To correct errors in the data transmission

3. Both a and b

4. Neither a nor b

Show me the answer

Answer: 2. To correct errors in the data transmission

Explanation:

• Error correction fixes errors in data transmission.

97. What is the most commonly used method for error detection in a network?

1. Parity check

2. Checksum

3. Cyclic redundancy check (CRC)

4. All of the above

Show me the answer

Answer: 4. All of the above

Explanation:

• Parity check, checksum, and CRC are commonly used methods for error detection.

98. What is the most commonly used method for error correction in a network?

1. Parity check

2. Checksum

3. Cyclic redundancy check (CRC)

4. Forward error correction (FEC)

Show me the answer

Answer: 4. Forward error correction (FEC)

Explanation:

• FEC is commonly used for error correction in networks.

99. How many bits are used for a parity check in a network?

1. 1 bit

2. 2 bits

3. 3 bits

4. 4 bits

Show me the answer

Answer: 1. 1 bit

Explanation:

• A parity check uses 1 bit to detect errors.

100. How many bits are used for a checksum in a network?

1. 1 bit

2. 2 bits

3. Depends on the number of bits in the data being transmitted

4. 4 bits

Show me the answer

Answer: 3. Depends on the number of bits in the data being transmitted

Explanation:

• The number of bits used for a checksum depends on the size of the data being transmitted.