Movate Network Security Interview Questions, Process, and Tips

Round duration - 60 minutes
Round difficulty - Medium

This was a technical round with questions entirely based on Networking.

Q1. Why is transport layer necessary for communication in computer networks?
Ans. 
The transport layer is necessary for communication in computer networks to ensure reliable data delivery and manage connections.
• The transport layer is responsible for end-to-end communication between devices in a network.

• It provides error-checking mechanisms to ensure data integrity during transmission.

• Transport layer protocols like TCP establish connections, manage data flow, and handle congestion control.

• UDP, another...read more
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Q2. What is a subnet mask?
Ans. 
A subnet mask is a 32-bit number used to divide an IP address into network and host portions.
• It is used in conjunction with an IP address to determine which part of the address is the network ID and which part is the host ID.

• Subnet masks consist of a series of 1s followed by a series of 0s.

• For example, a subnet mask of 255.255.255.0 means the first 24 bits are for the network and the last 8 bits are for hosts.
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Q3. Why is VLAN needed?
Ans. 
VLANs are needed to logically segment a network, improve security, optimize network performance, and simplify network management.
• VLANs help in isolating network traffic, reducing broadcast domains, and enhancing network security.

• They allow for better network performance by segmenting traffic and prioritizing certain types of data.

• VLANs simplify network management by grouping devices based on function or department.

• For ...read more
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Q4. What are the different types of Address Resolution Protocol (ARP)?
Ans. 
Different types of Address Resolution Protocol (ARP) include Proxy ARP, Gratuitous ARP, and Reverse ARP.
• Proxy ARP is used when a device on a network answers ARP requests intended for another device.

• Gratuitous ARP is used to update ARP tables of other devices on the network with a new MAC address for a specific IP address.

• Reverse ARP is used by a device to discover its own IP address when it knows only its MAC address.
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Q5. What is the difference between a MAC Address and an IP Address?
Ans. 
MAC Address is a hardware address assigned to network devices, while IP Address is a logical address used for communication between devices.
• MAC Address is a unique identifier assigned to network interfaces for communications on the physical network.

• IP Address is a logical address used for identifying devices on a network and routing data packets.

• MAC Address is fixed and assigned by the manufacturer, while IP Address ca...read more
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Round duration - 30 minutes
Round difficulty - Easy

This was a typical managerial round.