Network Addressing: Master IP Addressing, Subnetting, and VLSM

Question 1

Which of the following classful network addresses is the most appropriate for a host with the IP address 192.168.1.10?

Accepted Answer

Class C: 192.0.0.0-223.255.255.255

Answer

Class A: 0.0.0.0-127.255.255.255

Answer

Class B: 128.0.0.0-191.255.255.255

Answer

Class D: 224.0.0.0-239.255.255.255

Question 2

Which of the following is NOT an advantage of utilizing Variable-Length Subnet Masking (VLSM)?

Accepted Answer

Increased susceptibility to broadcast storms

Answer

Efficient IP address utilization

Answer

Reduced network congestion

Answer

Simplified network management

Question 3

In IPv6 addressing, what is the primary function of the Domain Name System (DNS)?

Accepted Answer

Resolving IPv6 addresses to hostnames

Answer

Assigning dynamic IP addresses

Answer

Facilitating multicast communication

Answer

Routing packets between different networks

Question 4

Which type of IPv6 address is specifically designated for global unicast communication, allowing devices to communicate across the internet?

Accepted Answer

Global unicast

Answer

Link-local

Answer

Site-local

Answer

Unique local

Question 5

In IPv4 networks, what is the primary purpose of Address Resolution Protocol (ARP)?

Accepted Answer

Resolving IP addresses to MAC addresses

Answer

Providing routing information

Answer

Detecting and resolving IP address conflicts

Answer

Establishing network connections

Question 6

What is a potential drawback of implementing Variable Length Subnet Masking (VLSM) in network design?

Accepted Answer

Increased administrative complexity

Answer

Efficient IP address allocation

Answer

Improved network performance

Answer

Reduced network security

Question 7

Which protocol is primarily used to assign IPv4 addresses to devices on a network automatically?

Accepted Answer

Dynamic Host Configuration Protocol (DHCP)

Answer

Address Resolution Protocol (ARP)

Answer

Network Address Translation (NAT)

Question 8

Determine the option that represents an invalid IPv4 address.

Accepted Answer

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

Answer

192.168.1.1

Answer

255.255.255.0

Answer

127.0.0.1

Question 9

For a Class C network, identify the default subnet mask.

Accepted Answer

255.255.255.0

Answer

255.0.0.0

Answer

255.255.0.0

Answer

255.255.255.255

Question 10

In a network, what is the purpose of a default gateway?

Accepted Answer

To provide access to external networks

Answer

To route traffic between subnets

Answer

To translate IP addresses to MAC addresses

Answer

To filter network traffic

Question 11

On a Linux system, which command is used for configuring an IPv6 address?

Accepted Answer

ip addr add

Answer

ifconfig

Answer

netcfg

Answer

route

Question 12

Explain the distinction between a public IP address and a private IP address.

Accepted Answer

Public IP addresses are used on the Internet, while private IP addresses are used within private networks

Answer

Private IP addresses are used on the Internet, while public IP addresses are used within private networks

Answer

Public IP addresses can be assigned to multiple devices, while private IP addresses can only be assigned to one device

Answer

Private IP addresses can be assigned to multiple devices, while public IP addresses can only be assigned to one device

Question 13

To identify the subnet mask of a network, which tool is most appropriate?

Accepted Answer

Subnet Calculator

Answer

Traceroute

Answer

Ping

Answer

Nslookup

Question 14

Within the TCP/IP model, what is the primary purpose of the Transport Layer?

Accepted Answer

To provide reliable data transfer

Answer

To provide error correction and recovery

Answer

To establish and manage network connections

Answer

To route data packets between networks

Question 15

In which scenario does Network Address Translation (NAT) offer the most significant benefit?

Accepted Answer

When multiple devices need to share a single public IP address, conserving IP resources and simplifying network management.

Answer

When aiming to increase data transmission speed, reducing latency and improving network performance.

Answer

When seeking to enhance network security by shielding internal devices from external threats.

Question 16

Which of the following is NOT a valid IPv4 address format?

Accepted Answer

300.100.100.100

Answer

192.168.1.1

Answer

255.255.255.255

Answer

127.0.0.1

Question 17

What is the primary function of a default gateway?

Accepted Answer

To provide access to the internet

Answer

To connect different subnetworks

Answer

To route traffic between devices

Answer

To filter incoming and outgoing traffic

Question 18

What is the purpose of a MAC address?

Accepted Answer

To identify a specific device on a network

Answer

To route traffic between different networks

Answer

To provide security for network communications

Answer

To store IP addresses

Question 19

What is the main difference between a router and a switch?

Accepted Answer

Routers connect different networks, while switches connect devices within a single network

Answer

Switches connect different networks, while routers connect devices within a single network

Answer

Routers and switches perform the same function

Answer

Routers are used for wired networks, while switches are used for wireless networks

Question 20

Which network protocol is responsible for transferring web pages?

Accepted Answer

HTTP

Answer

FTP

Answer

SMTP

Answer

SSH

Question 21

What is the primary purpose of a network firewall?

Accepted Answer

To prevent unauthorized access to a network

Answer

To improve network performance

Answer

To connect different networks

Answer

To store network data

Question 22

Which representation is a valid IPv4 address?

Accepted Answer

192.168.0.1

Answer

192.168.256.0

Answer

2001:db8::1

Answer

10.0.0.256

Question 23

For a network with an IP address of 172.16.0.0 and a subnet size of 24, what is the corresponding subnet mask?

Accepted Answer

255.255.255.0

Answer

172.16.0.255

Answer

255.255.255.255

Answer

255.255.0.0

Question 24

To efficiently utilize IP addresses for a network with 100 hosts, which VLSM scheme is most suitable?

Accepted Answer

192.168.1.0/26

Answer

192.168.1.0/24

Answer

192.168.0.0/24

Answer

192.168.1.0/28

Question 25

When comparing IPv6 to IPv4, what is a key advantage offered by IPv6?

Accepted Answer

Expanded address space

Answer

Faster transmission rates

Answer

Enhanced security features

Question 26

In a network, what is the primary function of a default gateway?

Accepted Answer

Facilitating communication with external networks

Answer

Filtering incoming network traffic

Answer

Assigning IP addresses to devices

Question 27

Describe the fundamental difference between unicast and multicast transmissions in networking.

Accepted Answer

Unicast involves sending data to a single recipient, while multicast involves sending data to a group of recipients.

Answer

Unicast transmissions are always faster than multicast transmissions.

Answer

Multicast transmissions are inherently more reliable than unicast transmissions.

Question 28

Which of the following protocols operates at Layer 2 of the OSI model?

Accepted Answer

Ethernet

Answer

TCP

Answer

IP

Answer

HTTP

Question 29

What is the primary responsibility of a DHCP server in a network?

Accepted Answer

Automatically assigning IP addresses and other network settings to devices

Answer

Filtering and controlling network traffic

Answer

Providing internet access to devices

Question 30

Which practice is considered crucial for maintaining network security?

Accepted Answer

Utilizing strong passwords and regularly updating them

Answer

Retaining default passwords without modification

Answer

Disabling firewall protection

Answer

Installing unnecessary software applications