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.

Deciding If You Should Join A Social Networking Site

Are you interested in meeting new people online? If so, there is a good chance that you have heard of social networking websites before. Social networking websites are, in a way, like a community. They allow internet users to connect with and communicate with each other. Despite the fact that social networking website have rapidly increased in popularity and their popularity is only expected to keep on rising, there are many internet users who are unsure as to whether or not social networking websites are for them.

If you are interested in determining whether or not you should join an online networking website, you are encouraged to think about why those websites are so popular. Doing so will enable you to determine why other internet users make the decision to join an online social network. After that close examination, you may even find that those are the same reasons why you should or want to join. One of those reasons is the ability to easily meet other internet uses.

Before social networking websites, it was difficult to meet other internet users. If you tried, you would have to rely on chat rooms or instant messaging services. As nice as these popular internet features are, they are not always considered safe. With chat rooms or instant messaging programs you were often given little reassurance that a person was who they claimed to be. Without profiles, there was no way that you could learn more about a particular internet user, even if you wanted to. Social networking websites have changed that.

Not only have social networking websites made it safer to meet people online, it also allows you to meet people that have the same or similar interests as yourself. Most social networking websites allow you to create your own profile; in fact, many even give you your own webpage. These profiles or pages will allow you to share information on yourself, including your likes and dislikes. Since all other network members should have the same pages and profiles, it should be fairly easy for you to meet up with other internet users, especially those who enjoy or believe in the same things that you do.

Another one of the many reasons why you should join a social networking website is because you literally have a wide variety of different choices. As social networking websites increased in popularity, so did the number of websites that could be found online. Although MySpace is often deemed the most popular online social networking website, there are others that are just as easy or as much fun to use. You should easily be able to find those websites by performing a standard internet search.

In your search, for social networking websites, you will come across a number of different networks. Many of those sites will have a particular focus. Unlike MySpace, which accepts just about any internet user, there are online networks that aim to accept internet users that have a particular hobby, view, or belief. Online, it is not uncommon to find social networking websites that focus on politics, religion, pets, sports, and more. If you are unsure about joining an online networking community, specialty networking sites may be your best bet. They are a great way to test the waters and they are nice because they automatically pair you with internet users who have the same interests, views, or beliefs as you do.

Perhaps, the greatest reasons why should join a social networking website is because most are free to use. Popular free networks include Yahoo! 360, Orkut, and MySpace. In addition to free social networks, there are online networks in which you are required to pay to join. Although you may not want to pay for something that you can obtain for free elsewhere, you will find that most paid networks offer you more membership benefits, when compared to free social networking sites.

Due to the fact that most social networking websites are free to use or at least free to try, you are encouraged to give them a shot. If you are unsatisfied with what you see, you can easily cancel your membership, often at anytime.