If you are looking for a career in Cloud Computing the Network Fundamentals concepts are very important and sometimes it decide key factors for your success in Interview and job role so in azure training Kolkata we are providing some key concepts one-liners answers and real interview questions for azure job interview in Kolkata and India.
Are you looking for some tips for your upcoming azure network interview?
Some questions and answers to revise your knowledge before actual interview.
What is a network?
A network is a group of interconnected devices or computers that can communicate with each other.
What is a LAN?
A LAN (Local Area Network) is a network that connects devices within a small geographical area such as a home, office or campus.
What is a WAN?
A WAN (Wide Area Network) is a network that connects devices across a large geographical area such as different cities or countries.
What is an IP address?
An IP (Internet Protocol) address is a unique numerical address that identifies a device on a network.
An IPv4 address is a unique identifier assigned to each device on a network that uses the Internet Protocol version 4 (IPv4) standard. It is a 32-bit address consisting of four groups of numbers separated by periods, with each group ranging from 0 to 255.
What is the purpose of an IP address?
The purpose of an IP address is to enable devices on a network to communicate with each other and access the internet.
How many bits are in an IPv4 address?
An IPv4 address is a 32-bit address.
What is private IP and public IP address?
An IP address that is used to identify devices on a private network is known as a private IP address. Private IP addresses, which are used for internal networks like those in homes, businesses, and schools, are not routable on the Internet. Each device on the network has a private IP address that is given to it by the router.
Private IP Address Range of Each Class
| Class of IP Address | Private IP Range |
| A | 10.0.0.0 – 10.255.255.255 |
| B | 172.16.0.0 – 172.31.255.255 |
| C | 192.168.0.0 – 192.168.255.255 |
An IP address that is used to identify devices on the Internet is known as a public IP address. Every Internet-connected device has a public IP address, which the Internet Service Provider (ISP) is responsible for allocating. For devices like web servers that must be accessed from outside the network, public IP addresses are utilised because they are routable on the Internet.
How many bits are in an IPv6 address?
An IPv6 address is a 128-bit address.
What is a subnet mask?
A subnet mask is a 32-bit number that is used to divide an IP address into network and host addresses.
What is a default gateway?
A default gateway is the IP address of the router that connects a network to the internet.
What is a DNS server?
A DNS (Domain Name System) server translates domain names into IP addresses.
What is a MAC address?
A MAC (Media Access Control) address is a unique address assigned to the network adapter of a device. A MAC address (Media Access Control address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. It is a 48-bit address, usually represented in hexadecimal format and consists of six groups of two digits, separated by colons or hyphens.
For example, a MAC address may look like this: 00:11:22:33:44:55
The first three groups of digits in a MAC address identify the manufacturer of the NIC, while the last three groups are assigned by the manufacturer and are unique to each NIC.
What is a switch?
A switch is a networking device that connects devices on a LAN.
What is a router?
A router is a networking device that connects different networks together.
What is a firewall?
A firewall is a security device that monitors and controls network traffic.
What is a protocol?
A protocol is a set of rules that governs communication between devices on a network.
What is TCP/IP?
TCP/IP (Transmission Control Protocol/Internet Protocol) is the set of protocols that enables communication between devices on the internet.
What is DHCP?
DHCP (Dynamic Host Configuration Protocol) is a protocol that automatically assigns IP addresses to devices on a network.
What is NAT?
NAT (Network Address Translation) is a technique that allows multiple devices on a network to share a single public IP address.
What is a VLAN?
A VLAN (Virtual Local Area Network) is a logical network created within a physical network.
What is a DMZ?
A DMZ (Demilitarized Zone) is a network segment that is separated from the rest of the network and is used to host public-facing services.
What is a subnet?
A subnet is a portion of a network that is divided using a subnet mask.
What is a gateway?
A gateway is a device that connects different networks together.
What is a broadcast address?
A broadcast address is an IP address that is used to send a message to all devices on a network.
What is a network interface card (NIC)?
A network interface card (NIC) is a hardware component that allows a device to connect to a network.
What is a ping?
A ping is a utility that sends a message to a device on a network to check if it is reachable.
What does DNS stand for?
DNS stands for Domain Name System.
What is DNS?
DNS is a hierarchical decentralized naming system that translates human-readable domain names to IP addresses.
What is the purpose of DNS?
The purpose of DNS is to provide a human-readable name to an IP address translation service.
What is a DNS server?
A DNS server is a computer or device that hosts the DNS service and provides name resolution for domain names.
What is a domain name?
A domain name is a human-readable name that is used to identify an IP address.
What is a Fully Qualified Domain Name (FQDN)?
A Fully Qualified Domain Name (FQDN) is a domain name that includes the top-level domain, such as .com or .org, and all subdomains.
What is a Top-Level Domain (TLD)?
A Top-Level Domain (TLD) is the last part of a domain name, such as .com or .org.
What is a Subdomain?
A subdomain is a domain that is a part of a larger domain, such as blog.example.com.
What is a Root domain?
The root domain is the top-level domain in the domain name system, represented by a dot.
What is a DNS zone?
A DNS zone is a portion of the DNS namespace that is managed by a specific DNS server.
What is a DNS record?
A DNS record is a piece of information that is stored in a DNS server to map a domain name to an IP address or provide other information about the domain.
What are the types of DNS records?
The types of DNS records include A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, and TXT records.
What is an A record?
An A record is a DNS record that maps a domain name to an IPv4 address.
What is an AAAA record?
An AAAA record is a DNS record that maps a domain name to an IPv6 address.
What is a CNAME record?
A CNAME record is a DNS record that maps a domain name to another domain name.
What is an MX record?
An MX record is a DNS record that specifies the mail server that is responsible for accepting email for a domain.
What is an NS record?
An NS record is a DNS record that specifies the authoritative name server for a domain.
What is a PTR record?
A PTR record is a DNS record that maps an IP address to a domain name.
What is an SOA record?
An SOA record is a DNS record that contains information about the domain and the DNS server that is authoritative for the domain.
What is an SRV record?
An SRV record is a DNS record that specifies the location of a service, such as a domain controller or SIP server.
What is a TXT record?
A TXT record is a DNS record that can contain any type of text-based data, such as SPF or DKIM records.
What is a DNS cache?
A DNS cache is a temporary storage location for DNS records that are frequently requested, in order to speed up DNS resolution.
What is a DNS resolver?
A DNS resolver is a component of a computer or device that looks up IP addresses for domain names.
What is DNS propagation?
DNS propagation is the process by which DNS records are distributed and updated throughout the DNS system. It can take up to 48 hours for DNS propagation to complete.
Azure Virtual Network Fundamentals QA [ Short Answer Types ]
What is an Azure Virtual Network?
An Azure Virtual Network is a private network that is created in the Azure cloud.
What is the purpose of an Azure Virtual Network?
The purpose of an Azure Virtual Network is to provide a secure and isolated network environment for Azure resources.
What is an Azure VNet Peering?
Azure VNet Peering is a service that enables the connection of two Virtual Networks in the Azure cloud.
What is the benefit of using Azure VNet Peering?
The benefit of using Azure VNet Peering is that it enables resources in different virtual networks to communicate with each other securely and privately.
What is the maximum number of Virtual Networks that can be connected with Azure VNet Peering?
The maximum number of Virtual Networks that can be connected with Azure VNet Peering is 500.
What is an Azure Virtual Network Gateway?
An Azure Virtual Network Gateway is a VPN gateway that enables secure connections between an Azure Virtual Network and on-premises networks.
What is an Azure VPN Gateway?
An Azure VPN Gateway is a virtual network gateway that enables secure connections to on-premises networks.
What is the difference between Azure Virtual Network Gateway and Azure VPN Gateway?
Azure Virtual Network Gateway is a subset of Azure VPN Gateway that only allows connection to Azure Virtual Networks. Azure VPN Gateway, on the other hand, enables connection to both Azure Virtual Networks and on-premises networks.
What is a Virtual Network Gateway SKU?
A Virtual Network Gateway SKU is a pricing tier for the Azure Virtual Network Gateway service.
What is the difference between Basic and Standard Virtual Network Gateway SKUs?
The Basic Virtual Network Gateway SKU provides a lower performance VPN gateway while the Standard Virtual Network Gateway SKU provides a higher performance VPN gateway.
What is a Point-to-Site connection?
A Point-to-Site connection is a VPN connection that enables a single computer or device to connect to an Azure Virtual Network.
What is a Site-to-Site connection?
A Site-to-Site connection is a VPN connection that enables a network to connect to an Azure Virtual Network.
What is an ExpressRoute connection?
An ExpressRoute connection is a dedicated, private connection between an on-premises network and an Azure Virtual Network.
What is Azure ExpressRoute?
Azure ExpressRoute is a service that enables the connection of an on-premises network to an Azure Virtual Network through a private connection.
What is a Peering Connection?
A Peering Connection is a network connection between two Virtual Networks.
What is the difference between VNet Peering and VPN Gateway connection?
VNet Peering is a direct connection between two Virtual Networks while VPN Gateway connection uses a VPN connection to connect two networks.
What is the maximum number of Virtual Networks that can be connected with VNet Peering?
The maximum number of Virtual Networks that can be connected with VNet Peering is 500.
What is a Global VNet Peering?
Global VNet Peering is a service that enables the connection of two Virtual Networks in different regions.
What is the benefit of using Global VNet Peering?
The benefit of using Global VNet Peering is that it enables resources in different regions to communicate with each other securely and privately.
What is a Gateway Transit?
Gateway Transit is a service that enables a Virtual Network to use a VPN gateway from another Virtual Network.
What is a Gateway Transit VNet Peering?
Gateway Transit VNet Peering is a service that enables a Virtual Network to use a VPN gateway from another Virtual Network that is peered with it.
