Top 30 IP Address Interview Questions and Answers 2025

IP address classes are a way of categorizing IP addresses based on their first octet.

• There are five classes: A, B, C, D, and E.

• Class A addresses start with a number between 1 and 126.

• Class B addresses start with a number between 128 and 191.

• Class C addresses start with a number between 192 and 223.

• Class D addresses are used for multicasting.

• Class E addresses are reserved for future use.

• The class of an IP address determines the range of IP addresses that can be assigned within...read more

To check the IP of a Windows machine, you can use the command prompt or the network and sharing center.

• Open Command Prompt and type 'ipconfig' to view the IP address of the machine.

• Alternatively, go to Control Panel > Network and Sharing Center > Change adapter settings > Right-click on the network connection > Status > Details to find the IP address.

• You can also use the 'ipconfig /all' command in Command Prompt to view more detailed network information.

A domain is a group of computers and devices that are interconnected and share a common set of rules and procedures.

• A domain is a logical grouping of network resources, such as computers, printers, and servers.

• It allows users to access resources and services on the network using a unique domain name.

• Domains are managed by domain controllers, which authenticate users and enforce security policies.

• Examples of domain names include microsoft.com, google.com, etc.

IP stands for Internet Protocol. It is a set of rules that governs the format of data sent over the internet.

• IP is a unique address assigned to each device connected to a network.

• There are two versions of IP - IPv4 and IPv6.

• IPv4 uses a 32-bit address scheme allowing for a total of 2^32 addresses.

• IPv6 uses a 128-bit address scheme allowing for a total of 2^128 addresses.

IP addresses are divided into classes A, B, C, D, and E. Each class has a range of IP addresses.

• Class A: 1.0.0.0 to 126.0.0.0

• Class B: 128.0.0.0 to 191.255.0.0

• Class C: 192.0.0.0 to 223.255.255.0

• Class D: 224.0.0.0 to 239.255.255.255

• Class E: 240.0.0.0 to 255.255.255.255

To check IP in Linux, use the command 'ifconfig' or 'ip addr show'

• Open the terminal and type 'ifconfig' or 'ip addr show'

• Look for the IP address under the network interface section

• Alternatively, use the command 'hostname -I' to display the IP address only

A loop is a sequence of instructions that is continually repeated until a certain condition is met. An IP (Internet Protocol) address is a unique numerical label assigned to each device connected to a computer network.

• A loop is used in programming to execute a block of code repeatedly until a specific condition is met.

• There are different types of loops such as for loop, while loop, and do-while loop.

• An IP address is used to identify and locate devices on a network, allowing t...read more

Print all valid IP Addresses from a given input of strings.

• Split the input string into 4 parts and check if each part is a valid IP address component

• Use regular expressions to validate each component

• Use nested loops to generate all possible combinations of valid IP addresses

A VPN (Virtual Private Network) is a secure network connection that allows users to access the internet privately and securely.

• Encrypts data to ensure privacy and security

• Masks user's IP address to hide their location

• Allows users to access restricted content or bypass censorship

• Commonly used for remote work or accessing company networks

• Examples: NordVPN, ExpressVPN, Cisco AnyConnect

IP address is used to identify a device on a network, while MAC address is a unique identifier assigned to network interfaces for communications at the data link layer.

• IP address is a logical address assigned to a device to identify it on a network

• MAC address is a physical address embedded in network interface hardware

• IP address can be changed or reassigned, while MAC address is usually hardcoded and unique

• Example: IP address - 192.168.1.1, MAC address - 00:1A:2B:3C:4D:5E

IP addresses are unique numerical labels assigned to devices connected to a network, classified into different classes based on their range and purpose.

• IP addresses are divided into classes based on the range of numbers they fall into, with Class A, B, and C being the most common.

• Class A addresses have the first bit set to 0, Class B have the first two bits set to 10, and Class C have the first three bits set to 110.

• For example, an IP address of 192.168.1.1 falls into Class C...read more

To provide IP address on PC and change hostname, go to network settings and configure TCP/IP settings. To change hostname, go to system properties.

• Open Control Panel and click on Network and Sharing Center

• Click on Change adapter settings

• Right-click on the network adapter and select Properties

• Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties

• Select 'Use the following IP address' and enter the desired IP address

• To change hostname, right-click on 'This PC' and...read more

IP stands for Internet Protocol, which is a set of rules governing the format of data sent over the internet. A network is a group of connected devices.

• IP is a protocol used for communication between devices on the internet

• It provides a unique address to each device connected to the internet

• Network refers to a group of devices connected to each other, allowing them to communicate and share resources

• Examples of networks include LAN, WAN, and the internet

To check IP and subnet mask, use the ipconfig command on Windows or ifconfig command on Linux/Unix.

• Open Command Prompt or Terminal

• Type 'ipconfig' on Windows or 'ifconfig' on Linux/Unix

• Look for 'IPv4 Address' and 'Subnet Mask' in the output

• IPv4 Address is the IP address and Subnet Mask is the network mask

IP address is a unique identifier for a device on a network, while a port number is used to identify specific processes or services on that device.

• IP address is like a street address, while port number is like an apartment number

• IP address is used for routing packets to the correct device, while port number is used for routing packets to the correct process or service on that device

• IP address is a 32-bit numeric address, while port number is a 16-bit numeric identifier

• IP addr...read more

Class C IP address range is from 192.0.0.0 to 223.255.255.255.

• Class C IP addresses start with 192.x.x.x to 223.x.x.x

• The subnet mask for Class C is 255.255.255.0

• Example: 192.168.1.1, 203.45.67.89

The network id for ip 192.168.0.23 is 192.168.0.0.

• Identify the subnet mask for the network

• Perform a bitwise AND operation between the IP address and subnet mask

• The result is the network id

Converting IP address to binary and vice versa is a fundamental skill for IT support technicians.

• To convert an IP address to binary, convert each octet to binary and concatenate them.

• To convert binary to an IP address, split the binary into octets and convert each octet to decimal.

• Remember that each octet is 8 bits long.

• Useful tools for conversion include online converters and the Windows calculator in programmer mode.

An IP address is a unique identifier assigned to devices on a network. IP class ranges determine the size of the network.

• IP address stands for Internet Protocol address

• It is a numerical label assigned to each device connected to a network

• IPv4 addresses are 32-bit and IPv6 addresses are 128-bit

• IP class ranges determine the number of networks and hosts within a network

• Class A ranges from 1.0.0.0 to 126.0.0.0

• Class B ranges from 128.0.0.0 to 191.255.0.0

• Class C ranges from 192.0.0...read more

To find the origin IP of a website, you can use tools like ping, nslookup, or online IP lookup services.

• Use the 'ping' command in the command prompt or terminal to get the IP address of the website.

• Use 'nslookup' command to query DNS servers for the IP address of the website.

• Use online IP lookup services like 'iplocation.net' or 'whatismyipaddress.com' to find the origin IP of a website.

This issue could be caused by various factors such as incorrect IP configuration, network cable issues, or network adapter problems.

• Check the IP configuration settings on the device

• Ensure that the network cable is properly connected and not damaged

• Verify that the network adapter is functioning properly

• Check for any network outages or issues with the router or switch

• Try resetting the network adapter or restarting the device

• Contact the network administrator for further assistan...read more

IP stands for Internet Protocol and refers to a set of rules governing the format of data packets sent over the internet.

• IP is a fundamental protocol in the internet protocol suite.

• There are two versions of IP: IPv4 and IPv6.

• IPv4 addresses are 32-bit numbers written in decimal format, e.g., 192.168.0.1.

• IPv6 addresses are 128-bit numbers written in hexadecimal format, e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

• IP addresses can be classified into public and private addresses...read more

To get IP address, use 'ipconfig' command. To change wallpaper on Windows, right-click on desktop, select 'Personalize', then choose a new wallpaper.

• To get IP address, open Command Prompt and type 'ipconfig'

• To change wallpaper on Windows, right-click on desktop

• Select 'Personalize' from the menu

• Choose a new wallpaper from the options

Management IP is used to remotely manage and monitor network devices.

• Management IP is a unique IP address assigned to a network device for administrative purposes.

• It allows system administrators to remotely access and configure the device.

• Management IP is used for tasks like monitoring device performance, troubleshooting, and applying updates.

• It provides a secure way to manage network devices without physically being present.

• Examples of management IP include the IP address as...read more

There are 5 classes of IP addresses: Class A, Class B, Class C, Class D, and Class E.

• Class A: 1.0.0.0 to 126.0.0.0

• Class B: 128.0.0.0 to 191.255.0.0

• Class C: 192.0.0.0 to 223.255.255.0

• Class D: 224.0.0.0 to 239.255.255.255

• Class E: 240.0.0.0 to 255.255.255.255

IP stands for Internet Protocol. It is a unique numerical address assigned to each device connected to a computer network.

• IP is used to identify and locate devices on a network.

• There are two versions of IP: IPv4 and IPv6.

• IPv4 uses a 32-bit address and is the most widely used version.

• IPv6 uses a 128-bit address and provides a larger address space.

• Examples of IP addresses: 192.168.0.1 (IPv4) and 2001:0db8:85a3:0000:0000:8a2e:0370:7334 (IPv6).

Mapping of IP with DNS involves associating domain names with IP addresses for easier access on the internet.

• DNS (Domain Name System) is a system that translates domain names to IP addresses.

• IP addresses are unique identifiers assigned to devices connected to a network.

• Mapping of IP with DNS allows users to access websites using easy-to-remember domain names.

• For example, the domain name www.google.com is mapped to the IP address 172.217.7.238.

MAC address is a hardware address assigned to network devices, while IP address is a logical address used for communication.

• MAC address is a unique identifier assigned to network interfaces for communication at the data link layer.

• IP address is a logical address assigned to devices for communication at the network layer.

• MAC address is fixed and tied to the hardware, while IP address can be dynamic and assigned by a network administrator.

• Example: MAC address - 00:1A:2B:3C:4D:5...read more

IP Address is a unique numerical label assigned to each device connected to a computer network.

• IP Address is divided into classes: A, B, C, D, and E.

• Class A addresses are used for large networks, with the first bit always set to 0.

• Class B addresses are used for medium-sized networks, with the first two bits always set to 10.

• Class C addresses are used for small networks, with the first three bits always set to 110.

• Class D addresses are reserved for multicast groups.

• Class E add...read more

IP Address is a unique numerical label assigned to each device connected to a computer network.

• IP Address stands for Internet Protocol Address.

• There are five classes of IP Addresses: A, B, C, D, and E.

• Each class has a different range of possible IP Addresses.

• For example, Class A addresses range from 1.0.0.0 to 126.0.0.0.

Different classes of IP addresses

• IP addresses are divided into classes based on their first octet

• Class A addresses have a first octet range of 1-126

• Class B addresses have a first octet range of 128-191

• Class C addresses have a first octet range of 192-223

• Class D addresses are used for multicast

• Class E addresses are reserved for future use

There are 3 types of IP addresses: IPv4, IPv6, and MAC. IPv4 has 4 classes: A, B, C, and D.

• IPv4: 4 classes - A (1.0.0.0 to 126.0.0.0), B (128.0.0.0 to 191.255.0.0), C (192.0.1.0 to 223.255.255.0), D (224.0.0.0 to 239.255.255.255)

• IPv6: 8 groups of 4 hexadecimal digits separated by colons (e.g. 2001:0db8:85a3:0000:0000:8a2e:0370:7334)

• MAC: 6 groups of 2 hexadecimal digits separated by colons (e.g. 00:1B:44:11:3A:B7)