Network Layer Concepts: Master Logical Addressing, Routing, and Congestion Control

Question 1

What is the role of a routing protocol in the Network Layer?

Accepted Answer

To determine the best path for data through the network

Answer

To assign IP addresses to devices

Answer

To encrypt data for secure transmission

Answer

To regulate data transmission rates

Question 2

Which of the following is a type of congestion control mechanism used in the Network Layer?

Accepted Answer

Flow control

Answer

Error correction

Answer

Forward error correction

Answer

Retransmission

Question 3

What is the purpose of a logical address in the Network Layer?

Accepted Answer

To uniquely identify a device on the network

Answer

To specify the physical path that data will take

Answer

To provide error correction information

Answer

To determine the transmission speed of the network

Question 4

Which of the following is NOT a characteristic of the Network Layer?

Accepted Answer

Establishes sessions between devices

Answer

Provides end-to-end connectivity

Answer

Handles routing and addressing

Answer

Controls data flow

Question 5

What is the purpose of encapsulation in the Network Layer?

Accepted Answer

To add routing information to data packets

Answer

To divide data into smaller packets

Answer

To encrypt data for secure transmission

Answer

To compress data to reduce transmission time

Question 6

Which of the following protocols is used for routing in the Network Layer of the TCP/IP model?

Accepted Answer

IP

Answer

TCP

Answer

UDP

Answer

HTTP

Question 7

What is the difference between static and dynamic routing protocols?

Accepted Answer

Static routing requires manual configuration, while dynamic routing is automatic

Answer

Dynamic routing is faster than static routing

Answer

Static routing is more secure than dynamic routing

Answer

Dynamic routing is used for large networks while static routing is used for small networks

Question 8

What is the function of a subnet mask in the Network Layer?

Accepted Answer

To divide a network into smaller subnetworks

Answer

To provide error correction information

Answer

To determine the transmission speed of the network

Answer

To encrypt data for secure transmission

Question 9

Which function is primarily performed by the Network Layer?

Accepted Answer

Logical addressing

Answer

Frame encapsulation

Answer

Error detection

Answer

Physical layer communication

Question 10

How many bits are utilized in an IPv6 address?

Accepted Answer

128

Answer

32

Answer

64

Answer

256

Question 11

What is the primary purpose of a routing table?

Accepted Answer

Storing destination addresses and next-hop information

Answer

Forwarding packets using MAC addresses

Answer

Managing network traffic flow

Answer

Translating domain names to IP addresses

Question 12

Which congestion control mechanism effectively lowers the transmission rate when network congestion is detected?

Accepted Answer

Congestion avoidance

Answer

Flow control

Answer

Error correction

Answer

Priority queuing

Question 13

Which of the following devices does NOT operate at the Network Layer (Layer 3)?

Accepted Answer

Hub

Answer

Router

Answer

Switch

Answer

Modem

Question 14

Which advantage is associated with implementing static routing?

Accepted Answer

Reduced administrative tasks

Answer

Enhanced network performance

Answer

Improved security measures

Answer

Automated path selection

Question 15

Describe the role of a default gateway.

Accepted Answer

Forwarding packets to external networks

Answer

Assigning IP addresses to hosts

Answer

Managing network traffic

Answer

Providing remote access to the network

Question 16

How does congestion control enhance network efficiency during data transfer?

Accepted Answer

Regulates data transmission rate to prevent network overload.

Answer

Minimizes transmission overhead by increasing packet size.

Answer

Ensures reliable data delivery through error correction mechanisms.

Answer

Protects data from unauthorized access by encrypting it.

Question 17

How do IP addresses enable unique identification of devices on a network?

Accepted Answer

Assigning each device a distinct numerical label

Answer

Providing a physical address for each device

Answer

Controlling access to network resources

Answer

Encrypting data before transmission

Question 18

Which protocol is responsible for the translation of domain names into corresponding IP addresses?

Accepted Answer

DNS

Answer

HTTP

Answer

TCP

Answer

SMTP

Question 19

Among the provided protocols, which one employs a distance-vector routing algorithm?

Accepted Answer

RIP

Answer

EIGRP

Answer

OSPF

Answer

BGP

Question 20

Which set of techniques is employed to mitigate network congestion?

Accepted Answer

Flow control and congestion avoidance

Answer

Error correction

Answer

Message framing

Answer

Data encapsulation

Question 21

Which type of IP address is assigned dynamically to devices connected to a network?

Accepted Answer

DHCP

Answer

Static

Answer

Public

Answer

Private

Question 22

Which congestion control algorithm relies on feedback from the receiver to adjust the transmission rate?

Accepted Answer

TCP

Answer

OSPF

Answer

RIP

Answer

UDP

Question 23

What is the function of a subnet mask?

Accepted Answer

To identify the network portion of an IP address

Answer

To provide error correction for data transmissions

Answer

To route data packets between networks

Answer

To translate domain names to IP addresses

Question 24

Which protocol is responsible for the encapsulation of data packets at the Network Layer?

Accepted Answer

IP

Answer

ARP

Answer

TCP

Answer

UDP

Question 25

What is the primary function of a router in the Network Layer?

Accepted Answer

To forward data packets based on their destination IP addresses

Answer

To control access to the network

Answer

To translate domain names into IP addresses