| Computer Networking Interview Questions | | | | Define VOIP Communication Technology |
| Here are the basic interview questions | | | | VOIP stands for Voice over IP and this |
| for the network administrators, system | | | | technology is used for transmitted the |
| administrators and IT manager posts. | | | | voice over the IP based long distance |
| These questions provide the basic | | | | network to make phone calls. VOIP phone |
| information about the network | | | | calls are very cheap and a large number |
| communication technology, network | | | | of the corporate offices and home users |
| topologies, network troubleshooting | | | | are using VOIP technology to make long |
| techniques, network devices and the | | | | distance phone calls. |
| basic overview of the LAN/WAN | | | | What is Wi Max Technology? |
| communication model. | | | | Wi Max is a wireless broadband |
| What is DHCP? | | | | technology and it is a advance shape of |
| DHCP stands for Dynamic Host | | | | the Wi Fi (which was a base band |
| Configuration Technology. The basic | | | | technology). Wi Max supports data, |
| purpose of the DHCP is to assign the IP | | | | video and audio communication at the |
| addresses and the other network | | | | same time at a very high speed up to 70 |
| configuration such as DNS, Gateway and | | | | Mbps. |
| other network settings to the client | | | | Define Network Gateway |
| computers. DHCP reduces the | | | | Network Gateway can be software or a |
| administrative task of manually | | | | hardware. A gateway is usually a |
| assigning the IP addresses to the large | | | | joining point in a network i.e. it |
| number of the computers in a network. | | | | connects two networks. A computer with |
| What is DNS and how it works? | | | | two LAN cards can act as a gateway. |
| DNS stands for Domain name system and it | | | | What is a Router? |
| translates (converts) the host name into | | | | A router routes the traffic to its |
| the IP address and IP address into to | | | | destination based on the source and |
| the host name. Every domain and the | | | | destination IP addresses, which are |
| computer on the internet is assigned a | | | | placed in the routing software known as |
| unique IP address. The communication on | | | | routing table. |
| the internet and in the network is based | | | | How Fiber Optic Cable Works |
| on the IP addresses. IP addresses are | | | | Fiber optics provides the fastest |
| in this format 10.1.1.100, | | | | communication medium for data and voice. |
| 220.12.1.22.3, 1.1.1.1 etc. IP | | | | Data can travel at the speed of light |
| addresses can't be remembered but the | | | | through the fiber optic cables. ISPs |
| host names (e.g. xyz.com, abc.com) are | | | | and corporate offices are usually |
| easy to remember instead of their IP | | | | connected with each other with the fiber |
| addresses. | | | | optic cables to provide high speed |
| What is a Firewall? | | | | connectivity. |
| Firewall is a protective boundary for a | | | | What is File Server? |
| network and it prevents the unauthorized | | | | A file server is a computer in a network |
| access to a network. Most of the | | | | that authenticates the user access in a |
| Windows operating system such as Windows | | | | network such as Windows 2000/2003 |
| XP Professional has built-in firewall | | | | Servers. |
| utilities. There are the large number | | | | Define Seven Layers of OSI Model |
| of the third party firewall software and | | | | There are seven layers of the OSI model. |
| the basic purpose of all the firewall | | | | The basic purpose of these layers is to |
| software and hardware is same i.e. to | | | | understand the communication system and |
| block the unauthorized user access to a | | | | data transmission steps. The seven |
| network. | | | | layers are Application, Presentation, |
| What is WAN? | | | | Session, Transport, Network, Data Link |
| WAN stands for wide area network and it | | | | and Physical. You can remember the name |
| covers the broader geographical area. | | | | of these layers by this phrase. "All |
| Basically there are three types of a | | | | people seems to need data processing". |
| computer network LAN (Local Area | | | | Define GSM Technology |
| Network), MAN (Metropolitan Area | | | | GSM is a short range wireless technology |
| Network) and WAN (Wide Area Network). | | | | and is usually used in the mobile |
| The communication in a WAN is based on | | | | phones, hand help devices, MP3 players, |
| the Routers. A WAN network can cover a | | | | Laptops, computers and in cars. |
| city, country or continents. | | | | |