10+ IT Network Engineer Interview Questions and Answers

I am comfortable working with Windows, Linux, and macOS operating systems.

• Windows

• Linux

• macOS

LAN cable connects devices within a local area network, cross cable connects similar devices directly, and proxy server acts as an intermediary for client requests.

• LAN cable is used to connect devices within a local area network, such as computers, printers, and servers.

• Cross cable is used to connect similar devices directly, like connecting two computers or two switches without a router.

• Proxy server acts as an intermediary between client requests and the internet, providing ...read more

Practical knowledge in IT refers to the ability to apply theoretical knowledge to real-world situations.

• Understanding of networking protocols and technologies

• Experience with troubleshooting and problem-solving

• Knowledge of security best practices

• Familiarity with different operating systems and software

• Ability to adapt to new technologies and learn quickly

To check link configuration modem status and router issues, you can use command line tools like ipconfig, ping, tracert, and log into the router's web interface.

• Use ipconfig to check network configuration on the computer

• Use ping to test connectivity between the computer and the modem/router

• Use tracert to trace the route to the modem/router

• Log into the router's web interface to check its configuration and status

A router is a networking device that forwards data packets between computer networks. Remote working refers to working outside of a traditional office setting.

• Router is a device that connects multiple networks and routes data packets between them

• Remote working allows employees to work from locations other than the office

• Remote working often requires secure connections such as VPNs for data transmission

The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers. The TCP/IP model is a concise version of the OSI model, with four layers.

• OSI model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, Application

• TCP/IP model has 4 layers: Network Interface, Internet, Transport, Application

• OSI model is a theoretical model, while TCP/IP model is a practical implementation

• OSI ...read more

Yes, I am familiar with the installation of all versions of Windows operating systems.

• Experienced in installing Windows 7, 8, 10, Server 2008, Server 2012, Server 2016, etc.

• Knowledge of partitioning drives, selecting installation options, and troubleshooting installation issues.

• Familiar with creating bootable USB drives or DVDs for Windows installation.

• Understanding of driver installation and post-installation configurations.

Fibre types refer to the different types of optical fibers used in networking.

• Single-mode fiber: used for long-distance communication, has a small core size

• Multi-mode fiber: used for shorter distances, has a larger core size

• Plastic optical fiber (POF): made of plastic instead of glass, used in home networks

Yes, I am familiar with various IT tools used in network engineering.

• Network monitoring tools like Wireshark, Nagios, and SolarWinds

• Configuration management tools like Ansible and Puppet

• Network performance testing tools like iperf and NetFlow Analyzer

• Security tools like Nessus and Snort

• Virtualization tools like VMware and VirtualBox

Bandwidth refers to the maximum amount of data that can be transmitted over a network connection in a given amount of time.

• Bandwidth is typically measured in bits per second (bps), kilobits per second (kbps), or megabits per second (mbps).

• It determines how fast data can be uploaded or downloaded from the internet.

• Higher bandwidth allows for faster internet speeds and smoother streaming of videos and music.

• Bandwidth can be limited by factors such as network congestion or the t...read more

LAN stands for Local Area Network, which connects devices within a limited area. WAN stands for Wide Area Network, which connects devices over a large geographical area.

• LAN is typically used in homes, offices, or small businesses.

• WAN is used to connect multiple LANs together over a larger distance.

• LAN has higher data transfer speeds compared to WAN.

• Examples of LAN technologies include Ethernet and Wi-Fi.

• Examples of WAN technologies include the Internet and leased lines.

SMTP stands for Simple Mail Transfer Protocol, used for sending and receiving email messages over the internet.

• SMTP is a protocol used for sending email messages between servers.

• It operates on port 25 by default.

• SMTP servers communicate using a series of commands and responses.

• Examples of SMTP servers include Gmail's SMTP server smtp.gmail.com and Yahoo's SMTP server smtp.mail.yahoo.com.

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

• IP addresses are used to identify and locate devices on a network

• There are two types of IP addresses: IPv4 and IPv6

• IPv4 addresses consist of four sets of numbers separated by periods (e.g. 192.168.1.1)

• IPv6 addresses are longer and consist of eight groups of four hexadecimal digits separated by colons (e.g. 2001:0db8:85a3:0000:0000:8a2e:0370:7334)