Q. In TCP/IP, which protocol is primarily used for reliable data transmission?
-
A.
UDP
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B.
ICMP
-
C.
TCP
-
D.
IP
Solution
TCP (Transmission Control Protocol) is used for reliable data transmission, ensuring that data packets are delivered in order and without errors.
Correct Answer:
C
— TCP
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Q. What is the main function of the Spanning Tree Protocol (STP)?
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A.
To prevent routing loops
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B.
To manage IP address allocation
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C.
To prevent switching loops
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D.
To enhance data encryption
Solution
The Spanning Tree Protocol (STP) is used to prevent switching loops in a network by creating a loop-free logical topology.
Correct Answer:
C
— To prevent switching loops
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Q. What is the primary function of the Transport Layer in the OSI model?
-
A.
To establish, manage, and terminate connections
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B.
To route packets between networks
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C.
To provide error detection and correction
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D.
To format and present data
Solution
The primary function of the Transport Layer (Layer 4) is to establish, manage, and terminate connections between applications.
Correct Answer:
A
— To establish, manage, and terminate connections
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Q. What is the purpose of a VLAN in switching?
-
A.
To increase bandwidth
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B.
To segment network traffic
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C.
To provide redundancy
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D.
To enhance security
Solution
A VLAN (Virtual Local Area Network) is used to segment network traffic, allowing for better management and isolation of different network segments.
Correct Answer:
B
— To segment network traffic
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Q. What type of error control mechanism does TCP use?
-
A.
Checksum
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B.
Parity Bit
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C.
CRC
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D.
Acknowledgment
Solution
TCP uses an acknowledgment mechanism to ensure that packets are received correctly and to request retransmission if necessary.
Correct Answer:
D
— Acknowledgment
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Q. Which IP address class is used for large networks with a significant number of hosts?
-
A.
Class A
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B.
Class B
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C.
Class C
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D.
Class D
Solution
Class A IP addresses are used for large networks, allowing for a vast number of hosts.
Correct Answer:
A
— Class A
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Q. Which layer of the OSI model does the Ethernet protocol operate at?
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A.
Physical Layer
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B.
Data Link Layer
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C.
Network Layer
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D.
Transport Layer
Solution
Ethernet operates at the Data Link Layer (Layer 2) of the OSI model.
Correct Answer:
B
— Data Link Layer
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Q. Which of the following is a characteristic of a Class C IP address?
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A.
Supports up to 16 million hosts
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B.
Supports up to 254 hosts
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C.
Supports up to 65,534 hosts
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D.
Reserved for multicast
Solution
Class C IP addresses support up to 254 hosts, making them suitable for small networks.
Correct Answer:
B
— Supports up to 254 hosts
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Q. Which of the following is NOT a function of a router?
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A.
Packet forwarding
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B.
Traffic management
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C.
Error detection
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D.
Data encryption
Solution
Data encryption is not a primary function of a router; routers focus on packet forwarding and traffic management.
Correct Answer:
D
— Data encryption
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Q. Which protocol is used to resolve IP addresses to MAC addresses?
-
A.
ARP
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B.
RARP
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C.
ICMP
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D.
DNS
Solution
ARP (Address Resolution Protocol) is used to resolve IP addresses to MAC addresses in a local network.
Correct Answer:
A
— ARP
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