Network Addressing and Subnetting: Master IP Addressing and Subnetting

Question 1

Determine the number of valid host addresses in the subnet specified by the IPv4 address 192.168.1.0/24.

Accepted Answer

252

Answer

62

Answer

126

Answer

510

Question 2

Identify the **correct** IPv4 address:

Accepted Answer

192.168.1.255

Answer

192.168.1.256

Answer

192.168.1.-1

Answer

192.168.1.300

Question 3

Determine the subnet mask for a network with a subnet size of 24.

Accepted Answer

255.255.255.0

Answer

255.255.0.0

Answer

255.128.0.0

Question 4

**Revised:** What is a primary purpose of subnetting?

Accepted Answer

To divide a larger network into smaller, distinct, and more manageable subnetworks

Answer

To assign static IP addresses to devices

Answer

To enhance network performance

Question 5

**Revised:** For a subnet with the IP address 192.168.1.0/24, which IP address typically serves as the default gateway?

Accepted Answer

192.168.1.1

Answer

192.168.255.254

Answer

192.168.0.1

Answer

255.255.255.255

Question 6

**Revised:** Which of the following is NOT a primary function of a DNS server?

Accepted Answer

Assigning IP addresses to devices

Answer

Translating domain names to IP addresses

Answer

Caching DNS queries for improved efficiency

Answer

Providing redundancy in case of server failure

Question 7

**Revised:** What is the main purpose of DHCP?

Accepted Answer

To dynamically assign IP addresses and related network configurations to devices on a network

Answer

To establish secure connections between devices

Answer

To manage access control for network resources

Question 8

**Revised:** Which of the following is a valid IPv6 address format?

Accepted Answer

2001:0db8:85a3:0000:0000:8a2e:0370:7334

Answer

255.255.255.255

Answer

192.168.1.0

Answer

localhost

Question 9

**Revised:** What is a key distinction between classful and classless networks?

Accepted Answer

Classless networks utilize variable-length subnet masks, while classful networks employ fixed-length subnet masks

Answer

Classful networks support a maximum of 255 hosts, whereas classless networks allow for a larger host range

Question 10

**Revised:** Which of the following is NOT an advantage of implementing subnetting?

Accepted Answer

Increased network broadcast traffic

Answer

Improved network security

Answer

Reduced network congestion

Question 11

Which of the following is a valid IPv4 address format?

Accepted Answer

192.168.1.1

Answer

2001:0db8:85a3:0000:0000:8a2e:0370:7334

Answer

255.255.0.1

Answer

FF02::1

Question 12

What is the subnet mask for a network with a CIDR notation of /24?

Accepted Answer

255.255.255.0

Answer

255.0.0.0

Answer

255.255.0.0

Answer

0.0.0.255

Question 13

What is the broadcast address for a subnet with the IP address 192.168.1.0/24?

Accepted Answer

192.168.1.255

Answer

192.168.255.255

Answer

192.168.1.0

Answer

192.168.0.255

Question 14

What is the primary function of a default gateway?

Accepted Answer

To route traffic to other networks

Answer

To resolve domain names to IP addresses

Answer

To assign IP addresses to devices

Answer

To provide encryption for network traffic

Question 15

Which of the following is NOT a function of DNS?

Accepted Answer

Assigning IP addresses to devices

Answer

Resolving domain names to IP addresses

Answer

Caching IP addresses to improve performance

Answer

Maintaining a database of domain names and IP addresses

Question 16

What is the purpose of DHCP?

Accepted Answer

To automatically assign IP addresses and other network configuration settings to devices

Answer

To resolve domain names to IP addresses

Answer

To route traffic to other networks

Question 17

What is the primary function of a subnet mask?

Accepted Answer

To differentiate between the network and host portions of an IP address.

Answer

To translate IP addresses into MAC addresses.

Answer

To route traffic across different networks.

Question 18

What is the purpose of a default gateway on a network?

Accepted Answer

To facilitate communication with external networks.

Answer

To resolve domain names into IP addresses.

Answer

To filter incoming network traffic.

Answer

To assign IP addresses to devices on the network.

Question 19

What is the primary function of DNS?

Accepted Answer

To convert domain names into corresponding IP addresses.

Answer

To filter incoming network traffic.

Answer

To assign IP addresses to devices on a network.

Answer

To route traffic across multiple networks.

Question 20

What is the purpose of DHCP on a network?

Accepted Answer

To automatically assign IP addresses to connected devices.

Answer

To translate domain names into corresponding IP addresses.

Answer

To route traffic across different networks.

Question 21

How many hosts can be accommodated on a subnet with a /24 subnet mask?

Accepted Answer

254

Answer

1024

Answer

512

Answer

127

Question 22

What is the primary purpose of a subnet mask?

Accepted Answer

To determine the network portion of an IP address

Answer

To optimize network bandwidth

Answer

To translate hostnames into IP addresses

Answer

To provide security for network traffic

Question 23

What is the primary function of a default gateway?

Accepted Answer

To route traffic between networks

Answer

To provide network security

Answer

To manage network access

Answer

To resolve domain names

Question 24

How does DHCP differ from DNS?

Accepted Answer

DHCP assigns IP addresses, while DNS translates hostnames to IP addresses

Answer

DHCP is a static protocol, while DNS is a dynamic protocol

Answer

DHCP provides network authentication, while DNS provides network access

Answer

DHCP manages network traffic, while DNS manages network security

Question 25

What is the purpose of Classless Inter-Domain Routing (CIDR) notation?

Accepted Answer

To represent both the network address and subnet mask in a combined format

Answer

To optimize network performance

Answer

To provide security for network traffic

Answer

To translate domain names to IP addresses

Question 26

Which of the following is a valid IPv4 address?

Accepted Answer

192.168.1.10

Answer

255.255.255.256

Answer

10.10.10.10.10

Answer

192.168.256.1

Question 27

What is the subnet mask for an IPv4 address with a prefix length of 24?

Accepted Answer

255.255.255.0

Answer

255.255.255.224

Answer

255.255.255.192

Answer

255.255.255.128

Question 28

What is the purpose of the Domain Name System (DNS)?

Accepted Answer

To translate domain names into IP addresses.

Answer

To route traffic between networks.

Answer

To provide security for network communication.

Answer

To assign IP addresses to hosts.

Question 29

Which protocol is used by DHCP servers to assign IP addresses to clients?

Accepted Answer

Dynamic Host Configuration Protocol (DHCP)

Answer

Transmission Control Protocol (TCP)

Answer

User Datagram Protocol (UDP)

Answer

Internet Protocol (IP)

Question 30

Which of the following is a valid IPv6 address?

Accepted Answer

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

Answer

192.168.1.1

Answer

255.255.255.255

Answer

10.0.0.1/24

Question 31

What is the purpose of a network mask?

Accepted Answer

To identify the network and host portions of an IP address.

Answer

To secure network traffic.

Answer

To route traffic between networks.

Question 32

What is the purpose of a subnet mask?

Accepted Answer

To separate the network portion of an IP address from the host portion.

Answer

To encrypt network traffic.

Answer

To allocate IP addresses to devices.

Question 33

Which of the following is a valid IPv4 address?

Accepted Answer

192.168.1.1

Answer

10.0.0.257

Answer

256.1.1.1

Answer

172.17.17.256

Question 34

A network administrator wants to create 10 subnets from a /16 network. What subnet mask should be used?

Accepted Answer

/20

Answer

/28

Answer

/22

Answer

/24

Question 35

What is the maximum number of hosts that can be on a subnet with a /24 subnet mask?

Accepted Answer

254

Answer

512

Answer

256

Answer

510

Question 36

Which of the following is NOT a benefit of subnetting?

Accepted Answer

Increases network broadcast traffic.

Answer

Improves network security.

Answer

Enhances network performance.

Answer

Optimizes network resource allocation.

Question 37

What is the purpose of a default gateway?

Accepted Answer

To route traffic outside of the local network.

Answer

To allocate IP addresses to devices.

Answer

To translate domain names into IP addresses.

Answer

To provide a unique identifier for each device.

Question 38

Which of the following is a common application of DHCP?

Accepted Answer

Automatic IP address assignment to devices.

Answer

Network security enforcement.

Answer

Domain name resolution.

Question 39

What is the difference between IPv4 and IPv6?

Accepted Answer

IPv6 uses 128-bit addresses, while IPv4 uses 32-bit addresses.

Answer

IPv4 is more efficient than IPv6.

Answer

IPv6 is more secure than IPv4.

Question 40

You are troubleshooting a network connectivity issue and discover that the device's IP address is outside the subnet range. What is the most likely cause?

Accepted Answer

Incorrect subnet mask configuration.

Answer

Firewall blocking network traffic.

Answer

Faulty network cable.

Answer

Incorrect DNS server settings.

Question 41

What is the decimal equivalent of the binary subnet mask 11111111 11111111 11111111 10000000?

Accepted Answer

255.255.255.128

Answer

255.0.0.0

Answer

255.255.0.0

Answer

255.255.255.0

Question 42

What is the primary function of a subnet mask in IPv4 addressing?

Accepted Answer

To determine the network portion of an IP address

Answer

To hide the IP address from external networks

Answer

To encrypt data transmitted over a network

Answer

To translate domain names into IP addresses

Question 43

A company is assigned the network address 192.168.1.0/24. How many usable IP addresses are available for hosts on this network?

Accepted Answer

254

Answer

255

Answer

510

Answer

256

Question 44

Which of the following is a valid IPv6 address?

Accepted Answer

2001:0db8:85a3:0000:0000:8a2e:0370:7334

Answer

172.16.0.128/16

Answer

192.168.1.1

Question 45

What is the purpose of a default gateway in a network?

Accepted Answer

To forward traffic destined for networks outside the local subnet

Answer

To assign IP addresses to devices on the network

Answer

To translate domain names into IP addresses

Question 46

Which protocol is responsible for dynamically assigning IP addresses to devices on a network?

Accepted Answer

DHCP

Answer

DNS

Answer

ARP

Answer

ICMP

Question 47

You need to subnet a network with the address 172.16.0.0/16 to accommodate four equally sized subnets.  What subnet mask should you use?

Accepted Answer

255.255.255.192

Answer

255.255.255.0

Answer

255.255.254.0

Question 48

What is the primary function of DNS in computer networking?

Accepted Answer

To translate domain names into IP addresses

Answer

To ensure secure communication over a network

Answer

To route traffic between different networks

Answer

To assign IP addresses to devices on a network

Question 49

What type of address is used to uniquely identify a specific network interface card (NIC) on a network?

Accepted Answer

MAC address

Answer

Subnet mask

Answer

Default gateway

Answer

IP address

Question 50

Which of the following is a benefit of using IPv6 over IPv4?

Accepted Answer

Larger address space

Answer

Faster data transmission speeds

Answer

Improved compatibility with older devices

Answer

Reduced network latency

Question 51

What is the purpose of the '::' notation in an IPv6 address?

Accepted Answer

To represent a consecutive string of zeros

Answer

To specify the subnet mask

Answer

To indicate a multicast address

Answer

To separate the network and host portions of the address