Network Layer Learning Quizzes for Data Science Students

Question 1

Which IP address class is used specifically for multicast communication, where data is sent to multiple devices simultaneously?

Accepted Answer

Class D

Answer

Class A

Answer

Class B

Answer

Class C

Question 2

What is the primary responsibility of a routing protocol in a network?

Accepted Answer

Determining the optimal path for data packets to take

Answer

Assigning IP addresses to devices on the network

Answer

Providing security for network communications

Answer

Managing network traffic congestion

Question 3

Among the routing protocols listed, which one operates based on the distance-vector algorithm?

Accepted Answer

RIP

Answer

OSPF

Answer

BGP

Answer

EIGRP

Question 4

What is the main purpose of implementing subnetting in a network?

Accepted Answer

Dividing a larger network into smaller, more manageable segments

Answer

Increasing the number of available IP addresses

Answer

Enhancing network security by isolating network segments

Answer

Improving network performance by reducing traffic congestion

Question 5

Which of the following is a key advantage of using VLSM (Variable Length Subnet Masking) in network design?

Accepted Answer

Optimizing IP address utilization by allowing for flexible subnet sizes

Answer

Simplifying network management by reducing the number of subnets

Answer

Improving network security by isolating network segments more effectively

Answer

Reducing network congestion by limiting broadcast traffic

Question 6

In the context of OSPF routing, which metric is primarily used to determine the best path for data transmission?

Accepted Answer

Hop count: The number of routers a packet must pass through

Answer

Bandwidth: The available capacity of a link

Answer

Delay: The time it takes for a packet to traverse a link

Answer

Reliability: The likelihood of a link being available and stable

Question 7

What is the primary function of the BGP (Border Gateway Protocol) routing protocol?

Accepted Answer

Exchanging routing information between different autonomous systems (ASes)

Answer

Providing internet connectivity to end-user devices

Answer

Managing routing within a single autonomous system

Answer

Resolving network address conflicts across different networks

Question 8

Which network protocol operates at Layer 2 of the OSI model and is primarily responsible for mapping IP addresses to MAC addresses?

Accepted Answer

ARP: Address Resolution Protocol

Answer

IP: Internet Protocol

Answer

UDP: User Datagram Protocol

Answer

HTTP: Hypertext Transfer Protocol

Question 9

What is the primary purpose of the checksum field included in an IP packet?

Accepted Answer

Verifying the integrity of the data during transmission by detecting errors

Answer

Identifying the source and destination IP addresses of the packet

Answer

Determining the size of the IP packet

Answer

Providing a way to recover lost or corrupted data

Question 10

Which subnetting technique allows for efficient IP address allocation by modifying the subnet mask length within a network?

Accepted Answer

Variable-Length Subnet Masking (VLSM)

Answer

Fixed-Length Subnetting

Answer

Classful Subnetting

Answer

Supernetting

Question 11

Which IP address belongs to the Class B network range?

Accepted Answer

172.16.0.1

Answer

192.168.1.1

Answer

10.1.1.1

Answer

224.0.0.1

Question 12

Which of the following is not a primary function of the Network Layer?

Accepted Answer

Data encryption and decryption

Answer

IP addressing and routing

Answer

Subnetting and VLSM

Answer

Connection establishment and termination

Question 13

Which routing protocol utilizes a distance-vector algorithm?

Accepted Answer

RIP

Answer

OSPF

Answer

BGP

Answer

EIGRP

Question 14

What is the primary purpose of applying a subnet mask?

Accepted Answer

Identify the subnet portion of an IP address

Answer

Conceal the IP address from external networks

Answer

Enhance network performance by reducing broadcast traffic

Answer

Guarantee unique IP addresses for all devices on a network

Question 15

What does the acronym BGP stand for?

Accepted Answer

Border Gateway Protocol

Answer

Boundary Gateway Protocol

Answer

Backbone Gateway Protocol

Answer

Best Gateway Protocol

Question 16

Which metric is utilized by OSPF to compute the optimal path?

Accepted Answer

Cost

Answer

Bandwidth

Answer

Delay

Answer

Hop count

Question 17

What is the intended purpose of IP fragmentation?

Accepted Answer

Transmit large packets over networks with smaller MTU sizes

Answer

Increase network throughput

Answer

Enhance network security

Answer

Minimize network latency

Question 18

Which network device primarily operates at the Network Layer?

Accepted Answer

Router

Answer

Switch

Answer

Firewall

Answer

Hub

Question 19

Differentiate between unicast and multicast addressing.

Accepted Answer

Unicast is one-to-one, while multicast is one-to-many.

Answer

Unicast is one-to-many, while multicast is one-to-one.

Answer

Unicast is employed for routing, while multicast is employed for broadcasting.

Answer

Multicast is employed for routing, while unicast is employed for broadcasting.

Question 20

Which of the following is an invalid IP address format?

Accepted Answer

255.255.255.255

Answer

192.168.1.1

Answer

10.0.0.0

Answer

2001:0db8:85a3:08d3:1319:8a2e:0370:7334

Question 21

Which of the following is an advantage of using Variable Length Subnet Masking (VLSM)?

Accepted Answer

It allows for more efficient use of IP address space

Answer

It simplifies routing table management

Answer

It provides better network security

Answer

It reduces network congestion

Question 22

What is the key difference between static and dynamic routing?

Accepted Answer

Static routing relies on manually configured routes, while dynamic routing automatically discovers and updates routes.

Answer

Static routing is more secure than dynamic routing

Answer

Dynamic routing is faster than static routing

Answer

There is no significant difference between static and dynamic routing

Question 23

Which of the following commands displays the routing table on a Linux system?

Accepted Answer

Both b and c

Answer

route

Answer

ip route

Answer

netstat -rn

Question 24

What is the primary function of a default gateway?

Accepted Answer

To forward packets to destinations outside the local network

Answer

To filter incoming traffic based on security rules

Answer

To provide network address translation between different networks

Answer

To improve network performance by optimizing traffic flow

Question 25

What is the purpose of using a network mask in IP addressing?

Accepted Answer

To determine the network and host portions of an IP address

Answer

To filter incoming traffic based on network rules

Answer

To improve network performance by reducing routing overhead

Answer

To provide security by encrypting IP addresses

Question 26

Which of the following is NOT a layer 3 protocol in the OSI model?

Accepted Answer

HTTP

Answer

IP

Answer

TCP

Answer

UDP

Question 27

Define the Network Layer's primary function.

Accepted Answer

Ensuring reliable data delivery across the network

Answer

Establishing physical device connections

Answer

Assigning IP addresses to connected devices

Answer

Maintaining established network connections

Question 28

Describe the role of IP addressing.

Accepted Answer

Uniquely identifying devices on a network

Answer

Determining data transmission paths

Answer

Providing data transmission security

Answer

Regulating network traffic flow

Question 29

Which routing protocol is known for its simplicity and use in small networks?

Accepted Answer

RIP

Answer

OSPF

Answer

BGP

Answer

EIGRP

Question 30

Identify a characteristic of the Border Gateway Protocol (BGP).

Accepted Answer

Used for routing traffic between autonomous systems

Answer

An interior gateway protocol

Answer

Uses a distance-vector algorithm

Answer

Designed for small networks

Question 31

Describe the purpose of the Address Resolution Protocol (ARP).

Accepted Answer

Translating IP addresses to MAC addresses

Answer

Providing routing information

Answer

Establishing network connections

Answer

Testing network connectivity

Question 32

Which of the following routing protocols is a distance-vector protocol?

Accepted Answer

RIP

Answer

OSPF

Answer

BGP

Answer

EIGRP

Question 33

What is the primary purpose of subnetting?

Accepted Answer

To increase the number of available IP addresses on a network

Answer

To improve routing efficiency

Answer

To enhance network security

Answer

To provide redundancy in case of network failures

Question 34

Which of the following is NOT an advantage of VLSM?

Accepted Answer

Eliminated network complexity

Answer

Efficient use of IP addresses

Answer

Simplified network management

Answer

Reduced routing overhead

Question 35

What is the primary function of the Border Gateway Protocol (BGP)?

Accepted Answer

Routing between different autonomous systems (ASes)

Answer

Routing within a single autonomous system (AS)

Answer

Resolving domain names into IP addresses

Answer

Providing network security

Question 36

What is the primary difference between TCP and UDP?

Accepted Answer

TCP is connection-oriented, while UDP is connectionless.

Answer

UDP is connection-oriented, while TCP is connectionless.

Answer

TCP provides reliable data transfer, while UDP does not.

Answer

UDP provides reliable data transfer, while TCP does not.

Question 37

What is the primary purpose of a MAC address?

Accepted Answer

To identify a specific device on a network

Answer

To route packets between networks

Answer

To assign IP addresses to devices

Answer

To provide security for network communication

Question 38

Which of the following is NOT a characteristic of network latency?

Accepted Answer

It always decreases when network bandwidth increases.

Answer

It can affect the performance of applications.

Answer

It can be caused by network congestion.

Answer

It can be measured in milliseconds.

Question 39

Which hierarchical routing protocol enables multiple paths to a destination, optimizing network efficiency?

Accepted Answer

OSPF (Open Shortest Path First)

Answer

RIP (Routing Information Protocol)

Answer

BGP (Border Gateway Protocol)

Answer

VLSM (Variable Length Subnet Masking)

Question 40

What technique involves dividing an IP network into smaller, manageable subnetworks?

Accepted Answer

Subnetting

Answer

Routing

Answer

VLSM (Variable Length Subnet Masking)

Answer

ARP (Address Resolution Protocol)

Question 41

Which of the following is NOT a valid IP address type?

Accepted Answer

MAC address

Answer

IPv4

Answer

IPv6

Answer

Private IP

Question 42

What is the primary function of the Border Gateway Protocol (BGP)?

Accepted Answer

Connecting different autonomous systems on the internet

Answer

Routing traffic within a single autonomous system

Answer

Resolving domain names into IP addresses

Answer

Assigning IP addresses to devices on a network

Question 43

Which advantage is associated with using VLSM (Variable Length Subnet Masking)?

Accepted Answer

Efficient utilization of IP address space

Answer

Enhanced network security

Answer

Improved routing performance

Answer

Simplified network management

Question 44

What is the purpose of the Address Resolution Protocol (ARP)?

Accepted Answer

Translating IP addresses to MAC addresses

Answer

Routing traffic between different networks

Answer

Assigning IP addresses to devices

Answer

Detecting network errors

Question 45

Which metric is used by OSPF (Open Shortest Path First) to determine the optimal path to a destination?

Accepted Answer

Cost

Answer

Hop count

Answer

Bandwidth

Answer

Delay

Question 46

At the Network Layer, which protocol is primarily responsible for addressing and routing packets through a network?

Accepted Answer

IP

Answer

HTTP

Answer

UDP

Answer

TCP

Question 47

RIP is a routing protocol that employs which specific distance vector algorithm for calculating optimal paths?

Accepted Answer

Bellman-Ford

Answer

Floyd-Warshall

Answer

Link-state

Answer

Dijkstra's

Question 48

For a network requiring support for 128 hosts, which subnet mask would be appropriate to use?

Accepted Answer

255.255.255.128

Answer

255.255.255.192

Answer

255.255.255.64

Answer

255.255.255.0

Question 49

Variable Length Subnet Masking (VLSM) primarily serves which purpose in network design?

Accepted Answer

Creating subnets of varying sizes to optimize network resource allocation.

Answer

Improving routing efficiency through hierarchical addressing.

Answer

Minimizing the number of subnets required for a network.

Answer

Enhancing network security by implementing access control lists.

Question 50

Routers play a crucial role in the Network Layer. What is their primary function?

Accepted Answer

Forwarding packets to their intended destinations based on IP addresses.

Answer

Establishing secure connections between devices.

Answer

Translating domain names into IP addresses.

Question 51

BGP, the Border Gateway Protocol, is primarily utilized for routing in which type of network environment?

Accepted Answer

Autonomous System.

Answer

Local Area Network (LAN).

Answer

Wide Area Network (WAN).

Question 52

IP fragmentation serves a specific purpose in network communication. What is the primary intent of fragmenting IP packets?

Accepted Answer

Breaking down large packets into smaller units for efficient transmission over networks.

Answer

Prioritizing packets based on their content and importance.

Answer

Encrypting packets to ensure secure data transfer.

Question 53

In the world of IP addressing, which scheme breaks away from the traditional classful structure?

Accepted Answer

CIDR (Classless Inter-Domain Routing).

Answer

IPv6.

Answer

IPv4.

Answer

VLSM (Variable Length Subnet Masking).