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Local Area Network
Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations
4,003 Questions
What is a tcp ip protocol used for performing file transfers?
The protocol is FTP and the port number 21
conquerorthecomputer.blogspot.com
What is the first valid address on a subnet?
Depends on the subnet.
For the subnet of 192.168.1.0, the first usable IP address is 192.168.1.1. This is typical of a default wireless router setup.
Valid usable IP addresses under this scenario is 192.168.1.1 to 192.168.1.254.
Which device is used to prevent a signal from bouncing on a thinnet network?
A 50 Ohm Terminator is used at each end of the network to prevent signal reflections.
Why is it typical to view a computer network as a cloud?
just like a cloud network is composed of layers.
See time-to-live (TTL) packet
Who can own a class b Ip address license?
Large organisations that can use around 65000 ip addresses however they will usually waste around 75% of these
What are the three router roles in an OSPF network?
Designated router, the backup designated router, and the DROTHER
Internetworking with Cisco and Microsoft Technologies pg. 306-307
What is the subnet mask of ip 192.168.0.5?
it is a class c address..so default subnet mask is 255.255.255.0
it is a private address...
What are the two layers of osi model in ccna?
There is no two-layered OSI model in CCNA.
7-layer there is (physical, link, network, transport, session, presentation, application).
4-layer there is (physical, network, transport, application), being the first an abstraction of physical+link and being the last an abstraction of session, presentation and application. This model is used because of the CCNA point of view, having no relevant meaning the abstracted layers.
What is difference between protocol and report?
the two are not synonymous .
you cant compare them
Think of a protocol as a set of rules.
It uses ICMP protocol - Internet Control Message Protocol
Which layer does token ring works?
Token ring local area network (LAN) technology is a protocol which resides at the data link layer (DLL) of the OSI model.
Why it is named as high speed networks?
The speed of data transfer (in KBps or MBps) between computers connected in these networks (Internet, LAN or WAN) will be faster than normal networks. Hence they are called High speed networks. Here high speed Swithing facilitates high speed data transmission.
How far can RG-6 cable be laid without losing signal strength?
RG6 is a co-ax cable commonly used for RF frequency signal transmission in applications such as satellite dish and aerial down leads. There are losses with any signal transmission in wires so signal strength will be reduced for any length of cable. The loss of the signal depends largely on the frequency of the signal and to a lesser extent, the resistance of the cable. The losses that are seen are normally of no significance as long as the receiver is presented with a signal of sufficient magnitude and quality to be able to interpret it correctly.
RG-6 is now not a supported specification. RG-6 cables can vary in performance between one manufacturer and another.
Additionally, the receiver circuitry can play a significant part in the total line length that can be used.
It is impossible to offer a definitive answer to the question because there are so many variables. If there are concerns about the length of the cable run it may be worthwhile to consider larger diameter cables that exhibit lower losses than RG-6. A local satellite or aerial installer will probably be able to ask the right questions and offer a practical solution.
A file server is a dedicated server that what?
Serves files. as opposed to a web page server which serves web pages. Generally a file server is something that you would have at a company, it would probably hold all of your important files which need to be shared with your team, it might also host your companies intranet.
There are several questions here so there is more than one answer:
Connecting fiber to coaxial cable
Fiber optic cable transmits light and not electricity so there is no way to connect the two together directly. Interfaces can be used to take data in an electrical form, convert it to light and send it along a fiber. Similar interfaces do the opposite and receive light to convert it back to an electrical signal. The type of data carried is independent of the fiber or the cable.
Picture quality
In the world of television, data means pictures (and audio and other data). Television transmission is now almost fully digital in most countries so both copper cable and fiber doth carry digital information. As the data is independent of the transmission method, there will be absolutely no difference in picture quality if it is transmitted over fiber or copper.
Data speed
Few of us have the luxury of specifying the type of connection we have to the Internet. A service provider will supply copper cable or fiber to suit their own systems and then provide a suitable interface in the home. Fiber is often used for long distance connections with a short copper link from the street into homes or fiber can be taken directly into a home. Either way, the data rate is specified and controlled by the service provider. Fiber has a reputation for offering better maximum data rates than copper cable but this is dependent on the length of the line being used. In general terms, copper cable can transmit data as fast as fiber optics over very short distances. Above certain lengths, fiber optic cables become very attractive compared to copper because the signal losses are far lower in fiber than copper. It is safe to say that for long runs, fiber can offer a higher data rate than copper in many situations.
That should be a router.
2 How do routers use the routing table to determine the best path to a destination network?
They check the number of hops a packet passes to reach the the destination. The router then uses the route with least number of Hops.
TELNET
What is the difference in distance between lan and wan?
A LAN (local area network) is a group of computers and network devices connected together, usually within the same building
A WAN (wide area network), is not restricted to a geographical location, although it might be confined within the bounds of a state or country. A WAN connects several LANs, and may be limited to an enterprise (a corporation or an organization) or accessible to the public. The technology is high speed and relatively expensive. The Internet is an example of a worldwide public WAN.
Lastly, the protocols are different between a LAN and WAN. A LAN uses transmissions to other devices within the same network segment, whereas a WAN uses point to point transmissions between nodes of the WAN which may be separated by hundreds or thousands of miles.
workgroup
What is the maximum distance reached using IR transmission?
Between 2 standard IR devices it is 1 meter.
Between 2 low power IR devices it is 0.3 meter
Between a standard and a low power IR device it is 0.2 meter
