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Mcqquestions

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Quizzes Created: 27 | Total Attempts: 615,362

Questions: 10 | Attempts: 16,893 | Updated: Nov 16, 2023

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1.

Each IP packet must contain
- A.
  
  Only Source address
- B.
  
  Only Destination address
- C.
  
  Source and Destination address
- D.
  
  Source or Destination address
Correct Answer
C. Source and Destination address

Explanation
Each IP packet must contain both the source and destination address. This is because IP packets are used for routing data across networks, and it is essential to know both the source and destination of the data being transmitted. The source address identifies the sender of the packet, while the destination address specifies where the packet should be delivered. Without both addresses, the packet would not be able to reach its intended destination.

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2.

Bridge works in which layer of the OSI model?
- A.
  
  Application layer
- B.
  
  Transport layer
- C.
  
  Network layer
- D.
  
  Datalink layer
Correct Answer
D. Datalink layer

Explanation
The correct answer is the Datalink layer. The Datalink layer is responsible for the reliable transmission of data frames over a physical link. It provides error detection and correction, as well as flow control. Bridges operate at this layer to connect multiple local area networks (LANs) together. They examine the destination MAC address in the data frame and forward it to the appropriate LAN segment.

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3.

The _______ provides a connection-oriented reliable service for sending messages
- A.
  
  TCP
- B.
  
  IP
- C.
  
  UDP
- D.
  
  All of the above
Correct Answer
A. TCP

Explanation
TCP (Transmission Control Protocol) provides a connection-oriented reliable service for sending messages. Unlike UDP (User Datagram Protocol), TCP ensures that the data sent is received in the correct order and without errors. TCP establishes a connection between the sender and receiver before transmitting data, and it guarantees the delivery of the data packets. Therefore, TCP is the correct answer as it offers a reliable and ordered communication service.

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4.

Which layers of the OSI model are host-to-host layers?
- A.
  
  Transport, Session, Presentation, Application
- B.
  
  Network, Transport, Session, Presentation
- C.
  
  Datalink, Network, Transport, Session
- D.
  
  Physical, Datalink, Network, Transport
Correct Answer
A. Transport, Session, Presentation, Application

Explanation
The host-to-host layers of the OSI model are responsible for establishing and maintaining communication between two devices on a network. These layers include the Transport, Session, Presentation, and Application layers. The Transport layer ensures reliable and error-free data transfer between hosts, the Session layer manages the communication sessions between hosts, the Presentation layer handles data formatting and encryption, and the Application layer provides services and interfaces for user applications. These layers work together to enable end-to-end communication between hosts on a network.

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5.

Which of the following IP address class is Multicast
- A.
  
  Class A
- B.
  
  Class B
- C.
  
  Class C
- D.
  
  Class D
Correct Answer
D. Class D

Explanation
Class D is the correct answer because it is the IP address class specifically reserved for multicast addresses. Multicast addresses are used to send data packets to a group of devices instead of a single device. Class D addresses range from 224.0.0.0 to 239.255.255.255, and they are used for various purposes such as streaming video, audio, or other types of data to multiple receivers simultaneously.

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6.

Which of the following is correct regarding Class B Address of IP address
- A.
  
  Network bit – 14, Host bit – 16
- B.
  
  Network bit – 16, Host bit – 14
- C.
  
  Network bit – 18, Host bit – 16
- D.
  
  Network bit – 12, Host bit – 14
Correct Answer
A. Network bit – 14, Host bit – 16

Explanation
The correct answer is "Network bit – 14, Host bit – 16". In a Class B IP address, the first two octets are used for the network portion and the remaining two octets are used for the host portion. In binary, the first 14 bits are dedicated to the network portion and the remaining 16 bits are used for the host portion. This allows for a maximum of 16,384 networks and 65,536 hosts per network.

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7.

The last address of IP address represents
- A.
  
  Unicast address
- B.
  
  Network address
- C.
  
  Broadcast address
- D.
  
  None of above
Correct Answer
C. Broadcast address

Explanation
The last address of an IP address represents the broadcast address. A broadcast address is used to send a message to all devices on a network. When a device sends a message to the broadcast address, it is received by all devices on the network. This is useful for sending information or commands to multiple devices simultaneously.

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8.

How many bits are there in the Ethernet address?
- A.
  
  64 bits
- B.
  
  48 bits
- C.
  
  32 bits
- D.
  
  16 bits
Correct Answer
B. 48 bits

Explanation
An Ethernet address, also known as a MAC address, is a unique identifier assigned to network interfaces. It consists of 48 bits, which are typically represented as 12 hexadecimal digits. This address is used to identify devices on a local network and is essential for data transmission. The 48-bit length allows for a large number of unique addresses, ensuring that each device on a network has a distinct identifier.

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9.

How many layers are in the TCP/IP model?
- A.
  
  4 layers
- B.
  
  5 layers
- C.
  
  6 layers
- D.
  
  7 layers
Correct Answer
A. 4 layers

Explanation
The TCP/IP model consists of four layers: the Network Interface layer, the Internet layer, the Transport layer, and the Application layer. Each layer has its own specific functions and protocols. The Network Interface layer handles the physical connection between devices, the Internet layer is responsible for addressing and routing packets across networks, the Transport layer ensures reliable data delivery, and the Application layer includes protocols for specific applications such as HTTP for web browsing and SMTP for email.

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10.

Which of the following layer of OSI model also called end-to-end layer?
- A.
  
  Presentation layer
- B.
  
  Network layer
- C.
  
  Session layer
- D.
  
  Transport layer
Correct Answer
D. Transport layer

Explanation
The Transport layer of the OSI model is also known as the end-to-end layer because it is responsible for end-to-end communication between source and destination devices. This layer ensures reliable and efficient delivery of data by providing error detection, flow control, and segmentation of data into smaller packets. It also handles the reassembly of packets at the destination device. Therefore, the Transport layer is the correct answer as it is specifically designed to facilitate end-to-end communication.

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Are You Ready To Take The Computer Networking Questions?

Each IP packet must contain

Bridge works in which layer of the OSI model?

The _______ provides a connection-oriented reliable service for sending messages

Which layers of the OSI model are host-to-host layers?

Which of the following IP address class is Multicast

Which of the following is correct regarding Class B Address of IP address

The last address of IP address represents

How many bits are there in the Ethernet address?

How many layers are in the TCP/IP model?

Which of the following layer of OSI model also called end-to-end layer?