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Networking Interview Questions

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 basic distance phone calls.
overview of the LAN/WAN communication What is Wi Max Technology?
model. Wi Max is a wireless broadband technology
What is DHCP? and it is a advance shape of the Wi Fi
DHCP stands for Dynamic Host (which was a base band technology). Wi
Configuration Technology. The basic Max supports data, video and audio
purpose of the DHCP is to assign the IP communication at the same time at a very
addresses and the other network high speed up to 70 Mbps.
configuration such as DNS, Gateway and Define Network Gateway
other network settings to the client Network Gateway can be software or a
computers. DHCP reduces the hardware. A gateway is usually a joining
administrative task of manually assigning point in a network i.e. it connects two
the IP addresses to the large number of networks. A computer with two LAN cards
the computers in a network. can 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 destination based on the source and
the IP address and IP address into to the destination IP addresses, which are
host name. Every domain and the computer placed in the routing software known as
on the internet is assigned a unique IP routing table.
address. The communication on the How Fiber Optic Cable Works
internet and in the network is based on Fiber optics provides the fastest
the IP addresses. IP addresses are in communication medium for data and voice.
this format 10.1.1.100, 220.12.1.22.3, Data can travel at the speed of light
1.1.1.1 etc. IP addresses can't be through the fiber optic cables. ISPs and
remembered but the host names (e.g. corporate offices are usually connected
xyz.com, abc.com) are easy to remember with each other with the fiber optic
instead of their IP addresses. 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 Windows that authenticates the user access in a
operating system such as Windows XP network such as Windows 2000/2003
Professional has built-in firewall Servers.
utilities. There are the large number of Define Seven Layers of OSI Model
the third party firewall software and the There are seven layers of the OSI model.
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 Network) GSM is a short range wireless technology
and WAN (Wide Area Network). The and is usually used in the mobile phones,
communication in a WAN is based on the hand help devices, MP3 players, Laptops,
Routers. A WAN network can cover a city, computers and in cars.
country or continents.




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