Let’s have some Network Security Interview Questions

Hello Folks 👋,

Parth, this side from BUG XS team. In this blog I am going to discuss about some commonly asked Network Security interview questions. You can find my other write-ups here.

Define protocol

  • For example, File Transfer Protocol(FTP) helps transfer files between devices.

Factors that affect the performance of a network

  1. No of users: The no of users is inversely proportional to bandwidth. i.e if there are 6 device in a network, each device will get 1/6th of total bandwidth.
  2. Error rate: Noise and external interference might alter the data bits
    sent and lead to an error.

Difference between wired and wireless LAN

  • Data transfers at a faster rate in wired connections as compared to a
    wireless connection.

How to prevent ARP spoofing?

  • software's like XArp can help to detect malicious packets.
  • Last but not the least, use of HTTPS can help you to authenticate data.

How to prevent IP address spoofing

  • Filter traffic both the ways i.e traffic coming to the system and traffic going from the system. So that even the spoofed IP address wont send any sensitive data from the server to victim’s connection.

What are Dynamic IP and Static IP

Static IP:

  • Device using Static IP can be traced easily because IP addresses are unique per system and they do not change.
  • Maintenance cost is higher.

Dynamic IP

  • It is very difficult to trace IP address because it changes , when you are connected to new network. For eg, every-time you change your WiFi connection or VPN connection IP is changed.
  • Maintenance cost is less.
  • Used when data needs high security.



Security Analyst, Bug XS Community Leader

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