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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
Can LPT Port be used as COM Port?
MODE LPTx=COMx
Unfortunately MODE LPTx:=COMx redirects parallel printer output to a COMport, I've never seen any indication that it will work the other way.
For example, to accommodate a 1200 baud serial printer on COM2 to a program that only has LPT1 output:
MODE COM2:1200,n,8,1,p sets up the comport with continuous retry
MODE LPT1:=COM2 redirects LPT1 output to COM2
Why network component need address?
For the same reason that houses and other buildings need a street address: so they can be found, so mail and packages can be delivered, etc.
For the same reason that telephones need a number: so you can select who to call, so the telephone exchange can connect the call correctly, if the person being called has caller ID service so they can tell who is calling, etc.
For the same reason people have names: so they can be identified, etc.
What does a related group of networked computers forms?
a related group of networked computers forms a DOMAIN.
What can L2TP do for someone's network?
L2TP is a tunneling protocol for an IP network. L2 data is transmitted over the network but has no encryption or authentication abilities. This type of protocol is usually paired with IPSec to provide encryption and authentication.
Which termonology referes to the arrangement of computers in a network?
The arrangement of computers in a network is known as Network topology.
The function of an Internet Protocol (IP) are given to every mode (a machine) that connects to the internet. The machine can be a printer, a computer, fax machine and many others. Each mode is given an IP which connects to the router, which connects to the modem. The purpose of the IP is like a home address and the postal mail.
In this example IP will mean where you live (your home address). Postal Service means Internet. Modem will mean your country province and city.
Let's say someone is sending a letter to you. The Postal Service needs to know your address and where you live. They write your name, and your address on the card and send it away. The postal service then gets the letter and knows your address (IP). It sends the letter to your address to then be picked up by you (the computer) in order to recieve a connection.
If your mobile computing device containing PII is lost, you must inform the following agencies within the specified time period except:
parameters for application are reliability,delay,jitter and bandwidth
What are the primary advantages or disadvantages broadband networks have over baseband networks?
The primary advantages of broadband networks over baseband networks include greater distances and bandwidths,while disadvantages involve high maintenance costs and requires modems.
What does the spanning-tree port fast do?
Cisco PortFast technology can be used to support DHCP. Without PortFast, a PC can send a DHCP request before the port is in forwarding state, denying the host from getting a usable IP address and other information. Because PortFast immediately changes the state to forwarding, the PC always gets a usable IP address.
To prevent spanning-tree loops, PortFast setting should only be used on nontrunking ports connected toend stations or user nodes, such as workstations or servers.
Does the AA Route Finder have a reputation for being accurate?
Most routing systems use the same maps gathered from the same sources. If one system has wrong information, it is likely all systems have the same wrong information. So in that regard, AA Route Finder is likely no better than any other routing system. After that, however, each system uses a proprietary algorithm to determine what is the best route. AA Route Finder appears to have a similar reputation for accuracy as most other popular route finders.
Does Ethernet use ring topology?
No, today virtually all networks use some variation of a star topology. It's far less subject to failure.
What is the difference between passive star and active repeater in fiber network?
A passive star has no electronics. The light from one fiber illuminates a
number of others. An active repeater converts the optical signal to an electri-
cal one for further processing.
BY USING FORMULA (M+R+1)<=2r 011110110011001110101 ----
The formula
d + p + 1 <= 2^p
(where d is the number of data bits and p is the number of check bits)
indicates that we need at least 5 check bits in order to correct single-bit errors in blocks of 16 data bits -- a (21,16) code. SECDED requires 6 check bits for blocks of 16 data bits.
A "newsgroup" in Internet terms refers to the old USENET discussion groups. Their original intention was news/announcement forums on specific topics. They evolved to become discussion forums.
http:/compnetworking.about.com/od/history_networking/f/internet_create.htm
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Disadvantages of peer to peer network in the manufacturing industry?
peer to peer networks can not be used if there are more than 25 computer,it doesn't have the centralized database
Password that works for every router?
There is no such thing. Every router has its own password, set by the network administrator. Or some routers may not have one.
There is no such thing. Every router has its own password, set by the network administrator. Or some routers may not have one.
There is no such thing. Every router has its own password, set by the network administrator. Or some routers may not have one.
There is no such thing. Every router has its own password, set by the network administrator. Or some routers may not have one.
top level
Optical signals in optical cables have short wavelength why?
Because the attenuation of the fiber is much less at those wavelengths.
