TOP NETWORKING INTERVIEW QUESTIONS WITH ANSWERS (2022)

TOP NETWORKING INTERVIEW QUESTIONS WITH ANSWERS (2022)

     Are you a computer engineer with a bachelor's degree? If you have network administration experience, you should visit www.open2hire.com. A network engineer is a technology expert with the ability to build, implement, and manage computer networks that enable phone, data, video, and wireless network services in the home. He must create a networking environment by creating system configuration, overseeing system installation, and, most importantly, documenting and enforcing the system. The goal of a Net Engineer is to ensure the integrity of high-availability network infrastructure so that it can be used to its full potential. They operate with a firm computer network that comprises LAN and WAN Internet connections, as well as intranets and extranets. So, if you're interested in a career in networking, have a look at the Network Engineer job interview questions and answers provided.

Networking engineer interview questions with answers

 NETWORKING QUESTIONS WITH ANSWERS

Question 1. What Are the Types of Lan Cables Used? What Is A Cross Cable?

Answer:

Types of LAN cables that are in use are "Cat 5" and "Cat 6". "Cat 5" can support 100 Mbps of speed and "CAT 6" can support 1Gbps of speed.

Cross cable: It used to connect same type of devices without using a switch/hub so that they can communicate.

Question 2. What Is the Difference Between A Normal Lan Cable And Cross Cable? What Could Be the Maximum Length of The Lan Cable?

Answer:

The way the paired wires are connected to the connector (RJ45) is different in cross cable and normal LAN cable.

The theoretical length is 100 meters but after 80 meters you may see drop in speed due to loss of signal.

Question 3. What is Router, where we use it?

Answer:

Router is a switch which uses routing protocols to process and send the traffic. It also receives the traffic and sends it across but it uses the routing protocols to do so.

Question 4. What Are Manageable and Non-Manageable Switches?

Answer:

Switches which can be administered are called manageable switches. For example we can create VLAN for on such switch. On no manageable switches we can't do so.

Question 5. What Is Nic?

Answer:

A network card, network adapter or NIC (network interface controller) is a piece of computer hardware designed to allow computers to communicate over a computer network

Question 6. How Many Layers Are There Under Tcp/ip?

Answer:

There are four layers: the Network Layer, Internet Layer, Transport Layer and Application Layer.


Question 7. What Are ‘firewalls’?

Answer:

Firewalls serve to protect an internal network from external attacks.

Question 8. What Is Rip?

Answer:

RIP (Routing Information Protocol) is used by routers to send data from one network to another.

Question 9. Differentiate Between ‘forward Lookup’ And ‘reverse Lookup’ In Dns?

Answer:

Converting names to IP addresses is called forward lookup.

Resolving IP addresses to names is called reverse lookup.

Question 10. What Is Dns? Why It Is Used?

Answer:

DNS is domain naming service and is used for resolving names to IP address and IP addresses to names. The computer understands only numbers while we can easily remember names. So to make it easier for us what we do is we assign names to computers and websites. When we use these names (Like yahoo.com) the computer uses DNS to convert to IP address (number) and it executes our request.

Question 11. What Are A Records And Mx Records?

Answer:

'A' record: Its called host record and it has the mapping of a name to IP address. This is the record in DNS with the help of which DNS can find out the IP address of a name.

'MX' Record: its called mail exchanger record. Its the record needed to locate the mail servers in the network. This record is also found in DNS.

Question 12. What Is APIPA Ip Address?

Answer:

When DHCP server is not available the Windows client computer assigns an automatic IP address to itself so that it can communicate with the network computers. This ip address is called APIPA. ITs in the range of 169.254.X.X.

APIPA stands for Automatic private IP addressing. Its in the range of 169.254.X.X.

More interview Tips

Question 13. What Is Ipconfig Command? Why It Is Used?

Answer:

IPCONFIG command is used to display the IP information assigned to a computer. From the output we can find out the IP address, DNS IP address, gateway IP address assigned to that computer.

Question 14. Explain TCP/IP Model

Answer: 
The most widely used and available protocol is TCP/IP i.e. Transmission Control Protocol and Internet Protocol. TCP/IP specifies how data should be packaged, transmitted and routed in their end to end data communication

Question 15. What is a Proxy Server and how do they protect the computer network?

Answer: 
For data transmission, IP addresses are required and even DNS uses IP addresses to route to the correct website. It means without the knowledge of correct and actual IP addresses it is not possible to identify the physical location of the network. Proxy servers prevent external users who are unauthorized to access such IP addresses of the internal network. It makes the computer network virtually invisible to external users.

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