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