Narola Infotech Network Administrator Interview Questions and Answers

30 minutes to finish the questions.

Q1. What are switches and routers.
Ans. 
Switches and routers are networking devices used to connect devices and networks together.
• Switches are used to connect devices within a network and direct traffic between them.

• Routers are used to connect different networks together and direct traffic between them.

• Switches operate at the data link layer of the OSI model, while routers operate at the network layer.

• Switches use MAC addresses to forward traffic, while rout...read more
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Q2. How do you add a system in domain, if there is a DNS error.
Ans. 
To add a system in domain with DNS error, first resolve the DNS issue and then add the system to the domain.
• Check the DNS settings and ensure they are correct

• Verify that the DNS server is running and accessible

• Flush the DNS cache on the system

• If necessary, add a static DNS entry for the domain controller

• Once the DNS issue is resolved, add the system to the domain as usual
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Q3. Explain basics of firewall.
Ans. 
A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
• Firewalls can be hardware or software-based

• They can be configured to block or allow traffic based on IP addresses, ports, protocols, and other criteria

• Firewalls can be set up to create a DMZ (demilitarized zone) to separate public-facing servers from internal networks

• Examples of...read more
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Q1. Why should we hire you?
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Q2. Can you explain any situation where you worked your way through a difficulty.
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Q3. Are you a quick learner if yes share any example or situation that corresponds to it.
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