Cybersecurity Technical Questions!

These are a series of weekly technical interview questions blog. Some important technical interview questions that might come up in a technical interview are as follows:

1.What are the different layers of the OSI model?

An OSI model is a reference model for how applications communicate over a network. The OSI model is as follows:

Physical Layer: Responsible for transmission of digital data from sender to receiver through the communication media.

Data Link Layer: Handles the movement of data to and from the physical link.

Network Layer: Responsible for packet forwarding and providing routing paths for network communication.

Transport Layer: Responsible for end-to-end communication over the network.

Session Layer: Controls connection between the sender and the receiver.

Presentation Layer: It deals with presenting the data in a proper format and data structure instead of sending raw datagrams or packets.

Application Layer: It provides an interface between the application and the network.

2) What is a VPN?

VPN stands for Virtual Private Network. It is used to create a safe and encrypted connection. The whole point of using a VPN is to ensure encrypted data transfer.

3) What do you understand by Risk, Vulnerability & Threat in a network?