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7 Nov 2017

IT Support Interview Questions 2018



What is router,
Routers are small electronic devices that join multiple computer networks together via either wired or wireless connections.

What is subnetting
A subnetwork or subnet is a logical subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting.

What is ip address
An IP address, short for Internet Protocol address, is an identifying number for a piece of network hardware. Having an IP address allows a device to communicate with other devices over an IP-based network like the internet. An IP address provides an identity to a networked device

What is firewall
A network firewall protects a computer network from unauthorized access. It might be a hardware device, software program, or a combination of the two, Comodo and Zone Alarm are two commonly used firewalls.

What is a gateway
A network gateway joins two networks so the devices on one network can communicate with the devices on another network A default gateway is used to allow devices in one network to communicate with devices in another network. If your computer, for example, is requesting an internet webpage, the request first runs through your default gateway before exiting the local network to reach the internet.. It connects your local area network (LAN) and all the devices on it to the internet and from there to wherever the devices want to go.

What is the purpose of BOOT.INI?
Boot.ini is used to decide which operating system options are displayed during the start-up process.

Straight through cable (T568A)
  1. Computer to hub, switch, router, or wall
Crossover cable (T568A & T568B)
  1. Computer to Computer with no switch or hub.
  2. Network device to network device. For example, router to router.
RJ45. An 8-pin/8-position plug or jack is commonly used to connect computers onto Ethernet-based local area networks (LAN).

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