Commonly Asked Networking Interview Questions And Answers | Set 5

1) Why the standard of an OSI model is termed as 802.xx?

Ans) OSI model was started in the month of February in 1980. So it is standardized as 802.XX. In this ‘80’ stands for the year 1980 and ‘2’ represents the month February.

2) Expand DHCP and describe how it works?

Ans) DHCP stands for Dynamic Host Configuration Protocol.

DHCP is used to assign IP addresses automatically to the devices over the network. When a new device is added to the network, it broadcasts a message stating that it is new to the network. Then the message is transmitted to all the devices of the network. Only the DHCP server will react to the message and assigns a new IP address to the newly added device of the network.With the help of the DHCP, the IP management became very easy.

With the help of the DHCP, the IP management became very easy.

3) How can a network be certified as an effective network? What are the factors affecting them?

Ans) A network can be certified as an effective network based on below-mentioned points,

Performance: A network’s performance is based on its transmitted time and response time. The factors affecting the performance of a network are hardware, software, transmission medium types and the number of users using the network.

Reliability: Reliability is nothing but measuring the probability of failures occurred in a network and the time taken by it to recover from it. The factors affecting the same are the frequency of failure and recovery time from failure.

Security: Protecting the data from viruses and unauthorized users. The factors affecting the security are viruses and users who do not have permission to access the network.

4) Explain DNS?

Ans) DNS stands for Domain Naming Server. DNS acts as a translator between domain names and IP address. As humans remember names, the computer understands only numbers. Generally, we assign names to websites and computers like gmail.com, Hotmail etc. When we type such names the DNS translates it into numbers and execute our requests.

Translating the names into numbers or IP address is named as a Forward lookup.

Translating the IP address to names is named as a Reverse lookup.

5) Define IEEE in networking world?

Ans) IEEE stands for Institute of Electrical and Electronic Engineer. This is used to design or develop standards that are used for networking.