Q. What is the main function of a switch in a network?
-
A.
To connect different networks
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B.
To filter and forward data to specific devices within the same network
-
C.
To provide internet access
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D.
To manage network security
Solution
A switch filters and forwards data to specific devices within the same network, improving network efficiency.
Correct Answer:
B
— To filter and forward data to specific devices within the same network
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Q. What is the main function of the Data Link Layer in the OSI model?
-
A.
To provide error detection and correction
-
B.
To establish, maintain, and terminate connections
-
C.
To route packets between networks
-
D.
To encrypt data
Solution
The Data Link Layer (Layer 2) provides error detection and correction, ensuring reliable data transfer over physical media.
Correct Answer:
A
— To provide error detection and correction
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Q. What is the primary function of a router in a network?
-
A.
To connect devices within the same network
-
B.
To forward data packets between different networks
-
C.
To provide wireless connectivity
-
D.
To encrypt data
Solution
A router's primary function is to forward data packets between different networks, directing traffic efficiently.
Correct Answer:
B
— To forward data packets between different networks
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Q. What is the purpose of error control in data transmission?
-
A.
To increase transmission speed
-
B.
To ensure data integrity
-
C.
To reduce latency
-
D.
To manage network congestion
Solution
Error control is used to ensure data integrity by detecting and correcting errors that may occur during transmission.
Correct Answer:
B
— To ensure data integrity
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Q. What type of cable is commonly used for high-speed data transmission in local area networks?
-
A.
Coaxial Cable
-
B.
Fiber Optic Cable
-
C.
Twisted Pair Cable
-
D.
Serial Cable
Solution
Fiber Optic Cable is commonly used for high-speed data transmission due to its high bandwidth and low attenuation.
Correct Answer:
B
— Fiber Optic Cable
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Q. Which layer of the OSI model does IP addressing operate?
-
A.
Application Layer
-
B.
Transport Layer
-
C.
Network Layer
-
D.
Physical Layer
Solution
IP addressing operates at the Network Layer (Layer 3) of the OSI model, facilitating routing of packets.
Correct Answer:
C
— Network Layer
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Q. Which layer of the OSI model is responsible for data formatting and encryption?
-
A.
Session Layer
-
B.
Presentation Layer
-
C.
Transport Layer
-
D.
Network Layer
Solution
The Presentation Layer (Layer 6) is responsible for data formatting, encryption, and translation between different data formats.
Correct Answer:
B
— Presentation Layer
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Q. Which of the following is a characteristic of TCP?
-
A.
Connectionless protocol
-
B.
Unreliable data transfer
-
C.
Provides error recovery
-
D.
Faster than UDP
Solution
TCP (Transmission Control Protocol) is a connection-oriented protocol that provides reliable data transfer and error recovery.
Correct Answer:
C
— Provides error recovery
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Q. Which of the following is NOT a type of transmission media?
-
A.
Twisted Pair
-
B.
Fiber Optic
-
C.
Wireless
-
D.
Network Protocol
Solution
Network Protocol is not a type of transmission media; it refers to the rules governing data communication.
Correct Answer:
D
— Network Protocol
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Q. Which protocol is primarily used for sending emails?
-
A.
HTTP
-
B.
FTP
-
C.
SMTP
-
D.
SNMP
Solution
SMTP (Simple Mail Transfer Protocol) is the standard protocol for sending emails across the Internet.
Correct Answer:
C
— SMTP
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Q. Which protocol is used to dynamically assign IP addresses to devices on a network?
-
A.
DHCP
-
B.
DNS
-
C.
ARP
-
D.
ICMP
Solution
DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to devices on a network.
Correct Answer:
A
— DHCP
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