Network Administrator

Network Administrator Interview Questions and Answers for Freshers

Updated 30 Nov 2023

Q1. Architecture of Firewalls worked, Previous role & responsibilities, What all things need to checked if enduser faces issues while accessing website or server, What if there is latency Any exceptional cases hand...

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Interview questions for Network Administrator role

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HTTP is unsecured protocol while HTTPS is secured protocol using SSL/TLS encryption.

HTTP stands for Hypertext Transfer Protocol, while HTTPS stands for Hypertext Transfer Protocol Secure.
HTTP operates on port 80, while HTTPS operates on port 443.
HTTP does not encrypt data, while HTTPS encrypts data using SSL/TLS.
HTTPS provides authentication and data integrity along with encryption.
Websites using HTTPS have a padlock icon in the address bar to indicate a secure connection.

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OSI is a theoretical model while TCP is a practical protocol.

OSI has 7 layers while TCP has 4 layers.
OSI is a reference model while TCP is a communication protocol.
OSI is not implemented in practice while TCP is widely used.
OSI is used for teaching and understanding while TCP is used for actual communication.
Examples of OSI layers are physical, data link, network, transport, session, presentation, and application.
Examples of TCP layers are network interface, internet, transpo...read more

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Use the rand() function in C/C++ to generate random numbers.

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A system administrator is responsible for managing and maintaining computer systems and networks.

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SD-WAN technology is a software-defined approach to managing wide area networks, allowing for centralized control and automation.

SD-WAN uses software to dynamically route traffic across the network based on real-time conditions.
It can prioritize critical applications and optimize performance by utilizing multiple connection types.
SD-WAN simplifies network management and reduces costs by replacing expensive MPLS connections with cheaper broadband links.
It provides visibility i...read more

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Network and system issues are common in any organization. It is important to have a proactive approach to identify and resolve them.

Regular monitoring of network and system performance
Implementing security measures to prevent cyber attacks
Having a backup and disaster recovery plan in place
Providing regular training to employees on best practices for network and system usage