Arya Omnitalk Senior Service Engineer Interview Questions, Process, and Tips

Software is a set of instructions that tell a computer what to do.

• Software is a collection of programs, data, and instructions that tell a computer how to perform specific tasks.

• It can be categorized into system software, application software, and middleware.

• Examples of software include Microsoft Office, Adobe Photoshop, and Google Chrome.

Hardware refers to the physical components of a computer system.

• Includes components such as the motherboard, CPU, RAM, hard drive, and peripherals

• Can be classified as input, output, or storage devices

• Examples include a keyboard, mouse, monitor, printer, and scanner

IP stands for Internet Protocol, which is a set of rules governing the format of data sent over the internet.

• IP is responsible for routing data packets between devices on the internet.

• It provides a unique address for each device connected to the internet.

• There are two versions of IP: IPv4 and IPv6.

• IPv4 addresses are 32-bit numbers, while IPv6 addresses are 128-bit numbers.

• IP is a fundamental protocol in the internet pr

DNS stands for Domain Name System. It is a system that translates domain names into IP addresses.

• DNS is like a phonebook for the internet

• It helps to locate websites by translating domain names into IP addresses

• DNS servers store information about domain names and their corresponding IP addresses

• DNS is essential for browsing the internet and accessing websites

LAN stands for Local Area Network, a computer network that connects devices within a limited area.

• LAN is a type of network that connects devices within a limited area such as a home, office, or building.

• It allows devices to communicate with each other and share resources like printers and files.

• LANs can be wired or wireless and can be set up using Ethernet cables, routers, and switches.

• Examples of LANs include home net

A PoE switch is a network switch that provides power over Ethernet to connected devices.

• PoE stands for Power over Ethernet

• PoE switches can power devices such as IP cameras, wireless access points, and VoIP phones

• PoE switches can simplify installation and reduce costs by eliminating the need for separate power supplies

• There are two types of PoE: standard PoE and PoE+ (also known as PoE plus or 802.3at)

• PoE switches can b

NVR stands for Network Video Recorder.

• It is a device used for recording and storing video footage from IP cameras.

• It is connected to a network and can be accessed remotely.

• It can be used for surveillance and security purposes.

• It can support multiple cameras and can record footage continuously or on a schedule.

• It can also have features like motion detection and alerts.

• Examples of NVR brands include Hikvision, Dahua, and

A network is a group of interconnected devices that can communicate and share resources.

• Networks can be wired or wireless

• Devices on a network can include computers, printers, routers, and servers

• Networks can be local (LAN) or wide area (WAN)

• Examples of networks include the internet and corporate networks

A router is a networking device that forwards data packets between computer networks.

• Routers operate at the network layer of the OSI model.

• They use routing tables to determine the best path for data to travel.

• Routers can connect multiple networks together, such as a home network to the internet.

• Examples of routers include Cisco, Netgear, and TP-Link.

A switch is a networking device that connects devices together on a computer network.

• Switches operate at the data link layer of the OSI model.

• They use MAC addresses to forward data to the correct destination.

• Switches can improve network performance by reducing network congestion.

• Examples of switches include Cisco Catalyst and Juniper EX Series switches.