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By J. Darmok. Miles College. These symptoms were preceded by 2–3 pleomorphic forms months of labile mood discount 10 mg http://komkus.com/alcohol-and-motrin-600-mg.html cholesterol test kit Q. What are (wireless / computer) networking?
Ans. – In the world of computers, networking is the practice of linking
two or more computing devices together for the purpose of sharing data.
Networks are built with a mix of computer hardware and computer
software. Networks can be categorized in several different ways. One
approach defines the type of network according to the geographic area it
spans. Local area networks (LANs), for example, typically reach across a
single home, whereas wide area networks (WANs), reach across cities,
states, or even across the world. The Internet is the world’s largest public
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Ans. – Clients and servers are devices that perform specific functions on
a network Client devices normally request and receive information over
the network. Mobile computers and most desktop PCs operate as clients. A
server device hosts files, databases, Web sites, or other applications.
Server devices often feature higher-powered processors, more memory,
and larger disk drives than clients. The term client/server refers to any
network design utilizing clients and servers. Web, FTP, email, DNS and
many other database applications are client/server designs. Client/server
networks can be built on the Internet, on intranets, or in homes. The main
alternative to client/server networking is peer-to-peer networking, where
network devices all perform equivalent functions.
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Ans. – Intranet is the generic term for a collection of private computer
networks within an organization. An intranet uses network technologies as
a tool to facilitate communication between people or workgroups to
improve the data sharing capability and overall knowledge base of an
organization’s employees. Intranets utilize standard network hardware
and software technologies like Ethernet, WiFi, TCP/IP, Web browsers and
Web servers. An organization’s intranet typically includes Internet access
but is firewalled so that its computers cannot be reached directly from the
outside. A common extension to intranets, called extranets, opens this
firewall to provide controlled access to outsiders. Many schools and nonprofit
groups have deployed them, but an intranet is still seen primarily as
a corporate productivity tool. A simple intranet consists of an internal
email system and perhaps a message board service.
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Ans. – Where port numbers are concerned, consider an analogy between
the computer and the telephone. Port numbers and their associated
network addresses work something like telephone numbers and
associated extensions. One can think of a network address – say, an IP
address – like a telephone number. The IP address gives a unique number
for reaching someone on the Internet, just as a telephone number allows
you to reach a specific destination on the public telephone network. (Note
that telephone numbers have additional features that IP addresses do not
have, such as area codes that provide some geographic information about
a location.) Many larger organizations set up their telephone networks to
use phone extensions. These extensions are typically 2-5 digit numbers
that identify an individual phone within the organization. But from the
outside, all of these extensions are associated with a single telephone
number (in the USA, often a 1-800 or 1-888 number). A network port
number functions similarly to a telephone extension. Taken together with
a network address, a port number identifies both a computer and also a
“channel” within that computer where network communication will take
place. Just as different organizations may use the same extension
numbers “inside” their primary phone number, different computers use
the same set of port numbers.
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Ans. – Peer-to-peer is a type of network design where all devices
support roughly equivalent capabilities. Peer-to-peer networking (also
known simply as peer networking) is in contrast to client/server
networking, where certain devices have responsibility for providing or
“serving” network information and other devices consume or otherwise act
as “clients” of those servers. Peer-to-peer networking is most common on
small LANs, particularly Windows home networks. Peer networking on the
Internet gained widespread popularity thanks to file sharing services like
Napster. However, many of these file sharing services, including Napster,
actually integrate both peer and client/server networking design.
Technically, these are called hybrid networks.
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PING – Packet Internet Gopher
A utility that verifies connections to one or more remote hosts. The ping command uses the ICMP echo request and echo reply packets to determine whether a particular IP system on a network is functional. Ping is useful for diagnosing IP network or router failures.
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Ans. – NIC is short for Network Interface Card. A NIC allows you to
connect to connect to a network, or network device. They come in a
variety of shapes, sizes, and network support lists. The most common
network cards are PCI 10/100 Ethernet network cards in desktop systems,
and PCMCIA 10/100 Ethernet cards in laptops. NICs can be integrated into
a motherboard, or other device. This may be referred to as Onboard LAN.
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Ans. – NAT is short for Network Address Translation. In a nutshell, NAT
allows a group of computers to use a single IP address to communicate
with the outside world or another network. Additionally it separates
External IP addresses from internal network IP addresses.
A device or program using NAT sits between the Internet and the network.
It rewrites IP addresses and port numbers on the fly so every packets
appears to be coming from (or going to) the single IP address of the NAT
device instead of the actual source or destination. This allows more then
one system to access the Internet at the same time, and it allows a
measure of safety as the outside site never sees the internal IP address
for the system it’s sending to. In this way, NAT also acts as a simple
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VLAN – Virtual Local Area Network
Vlan is a logical grouping or segmenting a network connected to administratively defined ports on a switch, they provide Broadcast control, Security and Flexibility.
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Used in IP Networks to break up larger networks into smaller subnetworks. It is used to reduce network traffic, Optimized network performance, and simplify management i.e. to identify and isolate network problems.
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Communication is the process of sending and receiving data by means of a data cable that is connected externally.
Transmission means the transfer of data from the source to the destination.
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Ans. – Microsoft makes a software package called ICS that support
Internet Connection Sharing between Windows computers running Win98
Second Edition or newer (including Windows 2000). Microsoft ICS does
not run on Windows 95. However, Windows 95 will support Internet
connection sharing with the appropriate third-party software installed.
Both WinGate and Sygate Home Network implement this feature for
Win95 and later versions of Windows. These packages work with cable
and DSL service as well as with traditional dial-up modems. Shareware
and freeware alternatives also exist.
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Ans. – The term “bps” specifies network bandwidth in bits per second. The
term “Bps” specifies network bandwidth in bytes per second.
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Ans. – The term “WWW” refers to the open development phase of the
Internet in the 1990s. The WWW comprises a global network of Web sites
accessible on the Internet.
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Ans. – URLs (Uniform Resource Locators) identify by name Web servers
and individual Web pages stored on those servers, anywhere on the
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Ans. – A URI (Uniform Resource Identifier) names both local and remote
Internet resources similar to URLs.