Networking Interview Questions

Computer Networking Interview Questions

The following is for network administrators, system administrators and IT managers the basic job interview questions. These issues related to basic information technology, network communications, network topologies, network troubleshooting, network equipment and the basic profiles of the network / wide area network communication model.

What is DHCP?

Representative of DHCP Dynamic Host Configuration technology. The basic purpose of the DHCP assigned IP address and the like DNS, gateways and other network settings other client computer's network configuration. The DHCP assigned IP addresses manually to reduce management tasks in a large number of computer networks.

What is DNS and how it works?

DNS stands for Domain name system and it translates (converts) the host name into the IP address and IP address into to the host name.Every domain and the computer on the internet is assigned a unique IP address.The communication on the internet and in the network is based on the IP addresses.IP addresses are in this format 10.1.1.100, 220.12.1.22.3, 1.1.1.1 etc.IP addresses can’t be remembered but the host names (e.g. www.networktutorials.info, xyz.com, abc.com) are easy to remember instead of their IP addresses.

What is a Firewall?

Firewall is a protective boundary for a network and prevents unauthorized access to a network. Most Windows operating system like Windows XP has a built-in firewall utility companies. Since there are a large number of third party firewall software and the basic goal of all firewall software and hardware the same, ie to block the unauthorized user access to a network.

What is WAN?

WAN stands for Wide Area Network, which covers a wider geographic area. Basically, the computer LAN (local area network) of MAN (metropolitan area) and WAN (wide area network) of the three types. WAN communication is based on the router. WAN networks, the city, you can cover a country or continent.

Define VOIP Communication Technology

VOIP stands for Voice over IP and this technology is used for transmitted the voice over the IP based long distance network to make phone calls. VOIP phone calls are very cheap and a large number of the corporate offices and home users are using VOIP technology to make long distance phone calls.

What is Wi Max Technology?

Wi Max is a wireless broadband technology and it is a advance shape of the Wi Fi (which was a base band technology).Wi Max supports data, video and audio communication at the same time at a very high speed up to 70 Mbps.

Define Network Gateway

Network Gateway can be software or a hardware.A gateway is usually a joining point in a network i.e. it connects two networks.A computer with two LAN cards can act as a gateway.

What is a Router?

A router routes the traffic to its destination based on the source and destination IP addresses, which are placed in the routing software known as routing table.

How Fiber Optic Cable Works

Fiber optics provides the fastest means of communication for data and voice. You can travel through fiber optic cable at the speed of light data. ISP and corporate offices are usually connected to fiber optic cable and other high-speed connections to provide each fiber.

What is File Server?

A file server is a computer in a network that authenticates the user access in a network such as Windows 2000/2003 Servers.

Define Seven Layers of OSI Model

There are seven layers of the OSI model.The basic purpose of these layers is to understand the communication system and data transmission steps.The seven layers are Application, Presentation, Session, Transport, Network, Data Link and Physical.You can remember the name of these layers by this phrase.“All people seems to need data processing”.

Define GSM Technology

GSM is a short range wireless technology and is usually used in the mobile phones, hand help devices, MP3 players, Laptops, computers and in cars.