Network Support Engineer Interview Questions and Answers for Freshers

Updated 2 Mar 2025

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Q1. How to configure telnet How to configure ssh OSI module What's is dhcp

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Configuring telnet and ssh, understanding OSI module and DHCP

To configure telnet, enable the telnet service on the device and set a password for access
To configure ssh, generate a public and private key pair and enable ssh service on the device
OSI module is a conceptual model that describes how data is transmitted over a network
DHCP is a protocol that automatically assigns IP addresses to devices on a network

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Router configurations involve setting up and managing network devices to ensure efficient and secure communication.

Router configurations involve configuring IP addresses, subnet masks, and default gateways.
Setting up access control lists (ACLs) to control network traffic.
Enabling routing protocols such as OSPF or BGP for dynamic routing.
Configuring NAT (Network Address Translation) to allow private IP addresses to access the internet.
Implementing security measures like firewa...read more

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Python language supports various data structures and algorithms concepts.

Python has built-in data structures like lists, tuples, dictionaries, and sets.
Common algorithms like sorting (e.g. merge sort, quick sort) and searching (e.g. binary search) can be implemented in Python.
Python also supports advanced data structures like stacks, queues, heaps, and graphs.
Popular libraries like NumPy and Pandas provide efficient data structures for numerical computations and data manipula...read more

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An IP address is a unique numerical identifier assigned to each device connected to a computer network.

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A network is a group of interconnected devices that communicate with each other to share resources and information.

Networks can be wired or wireless
They can be local (LAN) or wide area (WAN)
Networks can be used for sharing files, printers, and internet access
Examples of networks include the internet, home networks, and corporate networks

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The OSI model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system.

OSI stands for Open Systems Interconnection.
It has 7 layers, each with a specific function.
The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer communicates with the layer above and below it.
The model helps ensure interoperability between different systems and devices.
Example: HTTP ...read more

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Configuring a switch involves setting up VLANs, IP addresses, and security features for network management.

Access the switch via console or SSH.
Enter global configuration mode using 'configure terminal'.
Set up VLANs with 'vlan [VLAN_ID]' and assign ports using 'switchport access vlan [VLAN_ID]'.
Configure IP address on the switch with 'interface vlan [VLAN_ID]' and 'ip address [IP_ADDRESS] [SUBNET_MASK]'.
Enable trunking on ports with 'switchport mode trunk' for inter-VLAN comm...read more

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An access point is a device that allows wireless devices to connect to a wired network using Wi-Fi or other standards.

Acts as a bridge between wired and wireless networks.
Extends the range of a wireless network, allowing more devices to connect.
Can be standalone or part of a larger network infrastructure.
Examples include home Wi-Fi routers and enterprise-grade access points like Cisco Aironet.