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EPISODE-53 has 20 Important Terms for KVS Librarian Exam
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1
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What is a Link?
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A link refers to the connectivity between two devices.
It includes the type of cables and protocols used in order for one device to
be able to communicate with the other.
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2
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What are the layers of the OSI reference
model?
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There are 7 OSI layers: Physical Layer, Data Link
Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer and
Application Layer.
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3
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What is backbone network?
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A backbone network is a centralized infrastructure that
is designed to distribute different routes and data to various networks. It
also handles management of bandwidth and various channels.
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4
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What is a LAN?
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LAN is short for Local Area Network. It refers to the
connection between computers and other network devices that are located
within a small physical location.
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5
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What is a node?
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A node refers to a point or joint where a connection
takes place. It can be computer or device that is part of a network. Two or
more nodes are needed in order to form a network connection.
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6
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What are routers?
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Routers can connect two or more network segments. These
are intelligent network devices that store information in its routing table
such as paths, hops and bottlenecks. With this info, they are able to
determine the best path for data transfer. Routers operate at the OSI Network
Layer.
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7
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What is point to point link?
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It refers to a direct connection between two computers
on a network. A point to point connection does not need any other network
devices other than connecting a cable to the NIC cards of both computers.
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8
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What is anonymous FTP?
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Anonymous FTP is a way of granting user access to files
in public servers. Users that are allowed access to data in these servers do
not need to identify themselves, but instead log in as an anonymous guest.
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9
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What is subnet mask?
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A subnet mask is combined with an IP address in order
to identify two parts: the extended network address and the host address.
Like an IP address, a subnet mask is made up of 32 bits.
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10
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What is the maximum length allowed for a
UTP cable?
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A single segment of UTP cable has an allowable length
of 90 to 100 meters. This limitation can be overcome by using repeaters and
switches.
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11
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What is data encapsulation?
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Data encapsulation is the process of breaking down
information into smaller manageable chunks before it is transmitted across
the network. It is also in this process that the source and destination
addresses are attached into the headers, along with parity checks.
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12
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Describe Network Topology
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Network Topology refers to the layout of a computer
network. It shows how devices and cables are physically laid out, as well as
how they connect to one another.
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13
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What is VPN?
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VPN means Virtual Private Network, a technology that
allows a secure tunnel to be created across a network such as the Internet.
For example, VPNs allow you to establish a secure dial-up connection to a
remote server.
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14
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Briefly describe NAT.
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NAT is Network Address Translation. This is a protocol
that provides a way for multiple computers on a common network to share
single connection to the Internet.
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15
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What is the job of the Network Layer
under the OSI reference model?
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The Network layer is responsible for data routing,
packet switching and control of network congestion. Routers operate under
this layer.
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16
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How does a network topology affect your
decision in setting up a network?
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Network topology dictates what media you must use to
interconnect devices. It also serves as basis on what materials, connector
and terminations that is applicable for the setup.
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17
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What is RIP?
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RIP, short for Routing Information Protocol is used by
routers to send data from one network to another. It efficiently manages
routing data by broadcasting its routing table to all other routers within
the network. It determines the network distance in units of hops.
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18
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What are different ways of securing a
computer network?
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There are several ways to do this. Install reliable and
updated anti-virus program on all computers. Make sure firewalls are setup
and configured properly. User authentication will also help a lot. All of
these combined would make a highly secured network.
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19
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What is NIC?
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NIC is short for Network Interface Card. This is a
peripheral card that is attached to a PC in order to connect to a network.
Every NIC has its own MAC address that identifies the PC on the network.
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20
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What is WAN?
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WAN stands for Wide Area Network. It is an
interconnection of computers and devices that are geographically dispersed.
It connects networks that are located in different regions and countries.
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Thanks for Visiting
Asheesh Kamal
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