Q. What does a subnet mask do?
-
A.
Defines the size of the network
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B.
Encrypts data packets
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C.
Assigns IP addresses
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D.
Routes data packets
Solution
A subnet mask defines the size of the network and determines which portion of an IP address refers to the network and which part refers to the host.
Correct Answer:
A
— Defines the size of the network
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Q. What does the subnet mask 255.255.255.0 indicate?
-
A.
A Class A network
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B.
A Class B network
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C.
A Class C network
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D.
A Class D network
Solution
The subnet mask 255.255.255.0 indicates a Class C network.
Correct Answer:
C
— A Class C network
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Q. What is the main purpose of error control in networking?
-
A.
To increase bandwidth
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B.
To ensure data integrity during transmission
-
C.
To manage network traffic
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D.
To provide encryption
Solution
The main purpose of error control is to ensure data integrity during transmission by detecting and correcting errors.
Correct Answer:
B
— To ensure data integrity during transmission
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Q. What is the primary function of a router?
-
A.
To connect devices within the same network
-
B.
To forward data packets between different networks
-
C.
To provide wireless connectivity
-
D.
To manage network traffic
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 subnetting?
-
A.
To increase the size of a network
-
B.
To improve network security
-
C.
To divide a larger network into smaller, manageable segments
-
D.
To enhance data transmission speed
Solution
Subnetting is used to divide a larger network into smaller, manageable segments, improving organization and efficiency.
Correct Answer:
C
— To divide a larger network into smaller, manageable segments
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Q. Which layer of the OSI model does IP operate at?
-
A.
Application Layer
-
B.
Transport Layer
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C.
Network Layer
-
D.
Data Link Layer
Solution
IP (Internet Protocol) operates at the Network Layer (Layer 3) of the OSI model.
Correct Answer:
C
— Network Layer
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Q. Which of the following is a characteristic of a switch?
-
A.
Operates at the Network Layer
-
B.
Forwards data based on MAC addresses
-
C.
Connects different networks
-
D.
Provides IP addressing
Solution
A switch operates at the Data Link Layer (Layer 2) and forwards data based on MAC addresses.
Correct Answer:
B
— Forwards data based on MAC addresses
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Q. Which of the following is a method of error control in data transmission?
-
A.
Checksum
-
B.
Encryption
-
C.
Compression
-
D.
Segmentation
Solution
Checksum is a method of error control that helps detect errors in data transmission by adding a value based on the data being sent.
Correct Answer:
A
— Checksum
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Q. Which of the following is a method of error control?
-
A.
Checksum
-
B.
Encryption
-
C.
Compression
-
D.
Segmentation
Solution
Checksum is a method of error control used to detect errors in data transmission.
Correct Answer:
A
— Checksum
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Q. Which transmission medium is most commonly used for high-speed internet connections?
-
A.
Coaxial cable
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B.
Fiber optic cable
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C.
Twisted pair cable
-
D.
Wireless
Solution
Fiber optic cable is most commonly used for high-speed internet connections due to its high bandwidth and low attenuation.
Correct Answer:
B
— Fiber optic cable
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