Question { TCS, 27286 }

what is ping?

Answer

packet internet gopher a utility that verify the connecton
to the network the ping command is used icmp protocal to
check the echo request and echo replay packet to determine
to check the ip system on the network is function ping
utility

ping is usefull for digonosing ip network or root failure


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Question { Wipro, 152946 }

what is L1 and L2 support

Answer

L1 and L2 support means if you a the experence in field at
least 1 year you are appay for L1 support any compony

or you have more than 2 years working in the field you
applied for L2 label

Question { 11829 }

what is default gateway what is its use in router

Answer

what is default gateway ? by sunny banthiya mcse ccns pt
A gateway is a node (a router) on a computer network that
serves as an access point to another network.
A Default Gateway is the node on the computer network that
is chosen when the IP address does not belong to any other
entities in the Routing Table.

In homes, the gateway is usually the ISP-provided device
that connects the user to the Internet, such as a DSL or
cable modem.

In enterprises, however, the gateway is the node that
routes the traffic from a workstation to another network
segment. The default gateway is commonly used to be the
node connecting the internal networks and the outside
network (Internet). In such a situation, the gateway node
could act as a proxy server and a firewall. The gateway is
also associated with both a router, which uses headers and
forwarding tables to determine where packets are sent, and
a switch, which provides the actual path for the packet in
and out of the gateway.

Question { Microsoft, 5947 }

what is kernel?

Answer

The kernel is the essential center of a computer operating
system, the core that provides basic services for all other
parts of the operating system. A synonym is nucleus. A
kernel can be contrasted with a shell, the outermost part
of an operating system that interacts with user commands.
Kernel and shell are terms used more frequently in Unix
operating systems than in IBM mainframe or Microsoft
Windows systems.
Typically, a kernel (or any comparable center of an
operating system) includes an interrupt handler that
handles all requests or completed I/O operations that
compete for the kernel's services, a scheduler that
determines which programs share the kernel's processing
time in what order, and a supervisor that actually gives
use of the computer to each process when it is scheduled. A
kernel may also include a manager of the operating system's
address spaces in memory or storage, sharing these among
all components and other users of the kernel's services. A
kernel's services are requested by other parts of the
operating system or by application programs through a
specified set of program interfaces sometimes known as
system calls.

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Question { IBM, 13550 }

what is networking?

Answer

networking means communication between two are more
computer and they share some informaction like databse
print

A network is simply a collection of computers or other
hardware devices that are connected together, either
physically or logically, using special hardware and
software, to allow them to exchange information

Question { IBM, 12084 }

what are the types protocols?

Answer

what is protocal?
ans- protocal is a set of rule for perticular type of
communication

there are two types of protocal are work in networking
1 connection less
2 connection orented

connection less is used the same path of the data transmit
need to acknolagement to send a packed some protocal are
working like (IP , SPX APPLE TALK DATA GRAM protocal)

2 connecton orented - it use those path where less traffic
is found some protocal lik {ip ipx apple talk}

Question { IBM, 9452 }

what is dns? what is the use and advatages?

Answer

DNS DOMAIN NAME SERVER IT RESOLVE IP ADDRESS TO HOSTNAME
HOSTNAME TO IP ADDRESS

DNS WORK IN 2 ZONE

FORWORD ZONE
REV ZONE
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Question { IBM, 15644 }

what is dhcp? what is the uses and advantages?

Answer

DHCP stands for Dynamic Host Configuration Protocol
dhcp provide its work the tempary or automatically ip
address to the client computer host run the dhcp server and
workstation run the dhcp client client broadcast a message
to locate a dhcp server the ip address is a valid period of
time specified by the administrator from the dhcp server

dhcp work some stages like
ip request
dhcp offer
dhcp selection
dhcp acknowlegment

by default dhcp provide the ip on lease 8 days lease
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Question { IBM, 7930 }

what is ads? main advantages ads?

Answer

active directory services is a windows directory service
which store the uerfull informaction about the network
it is a multipurpose directory services it use to
centrilized the database user computer and print
the main advantage of active directory -is uer to
centerlized the the database and centrilized the
administrator they can manage the network remotely
and give the security in the network

active directory contains many thins -
domain
domain controller
org unit
tree
forest

Question { IBM, 14120 }

what is vpn ? and what is the main advatages?

Answer

hi

vpn means virtual private network - VPN stands for virtual
Private Network which provide a very
secure connection between two remote nodes through Internet.

As it is a secure network it provide security like it
practice
User can access the network more efficiently because it it
works on dedicated line.

vpn use 2 protocal
pptp- pptp point to point tuning protocal is a networking
techonology that support multiprotocal vpn enables the
remote user to access the network secure across the
internet by dailing the isp

L2tp- layer 2 tuning protocal is extenction to ppp protocal
thats enables the isps vpn the best features of two tuning
protocal pptp form microsoft and l2f from cisco


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