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.
How can you open the website by using the IP address?
What are some examples of input and output devices of a computer?
- Keyboard
- Mouse
- Touch Screen
- Scanner
- Camera
- Microphone
- Light pen
- optical mark reader
- Bar code reader
- Printer
- Monitor
- Speakers
- Projector
- Disks
- CD
- DVD
How do you connect a laptop to a PC?
There are mainly three ways of connecting a Laptop to a PC
1)Through LAN
2)Through Bluetooth
3)Through Wireless Router
The first one doesn't need any s/w(software), but a LAN card or NIC(network interface card) Ethernet Card , and a Twisted pair cable with RJ(register jack)45 crimped through cross over crimping on either sides of the wire.
The second one needs to have a Blue tooth dongle either inbuilt or an external one connected to both the Laptop and a PC.You need to install Blue tooth drivers.
The third one requires a Wireless Router that connects to your Internet Modem and broadcasts your signal wireless allowing computers to join your network. Once connected by network, have both computers join the homegroup and share files and folders. From each computer, depending on the shared folders, you can access the data on both the laptop and PC and therefore connecting them for easy transfer of data and anything else you might want to do.
There are several ways to connect a laptop to a PC.
- If you have an Ethernet card installed on your laptop and on your PC you can directly connect them with a cross-over LAN cable (in case You don't have network hub). or a straight LAN cable (if you are using a network hub or network switch between the computers).
- An ad-hoc wireless network if your PC and Laptop both have wireless cards.
- You can also get a special USB cable that connects 2 computers and allows data to be transferred between them. They are quite cheap and you can definitely find one on Ebay.
Option 1 generally no longer requires a special crossover cable. Most modern NICs (especially on laptops) will auto-sense which pairs they need to use for Tx/Rx.
What is meant by desktop support?
Basically, support for your computer, either it's software or the computer itself. Access to a company for any problems you may have with there product..
What are tools used for assessing LAN?
Findmac can be used.
What is a web server?
- A web server is essentially a computer prorgam which is responsible for handiling HTTP requests. A browser request to view a page the server then accepts the request and displays the page.
- From a general point of view we consider web servers as the storage area for files which are available on the web. So in order for any page to be viewable on the web it must be loaded on to the web server. A web server is usually a dedicated piece of hardware and software used to allow a website to be displayed on the net.
Every web server has a unique address so that other computers connected to the internet know where to find it on the vast network. The IP (Internet Protocol) address looks something like this: xx.xx.xxx.116. This address maps to a more human friendly address.
Web hosts rent out space on their web servers to people or businesses to set up their own websites. The web server allocates a unique website address to each website it hosts.
When you connect to the internet, your personal computer also receives a unique IP address assigned by your ISP (internet service provider). This address identifies your computer's location on the network. When you click on a link to visit a website, your browser sends out a request to that IP address. This request includes return information and functions like a postal letter sent across town, but in this case the information is transferred across a network. The communiqué passes through several computers on the way, each routing it closer to its ultimate destination.
When your request reaches its destination, the web server that hosts said website sends the page in HTML code to your IP address. This return communique travels back through the network. Your computer receives the code and your browser interprets the HTML code then displays the page for you in graphic form.
The more powerful the server, the faster it can serve up website pages. Slower, smaller servers may result in frustrating lag time for viewers. High traffic can also slow servers that are not powerful enough to handle high volumes of data exchange. This lag time should be a concern if you are shopping for a web host. Most web hosts have a page dedicated to sharing technical information about their web server, including speed, capacity, network configuration and other details.
In theory, web servers stay connected to the Internet 24/7, 365 days a year. In truth they experience occasional downtime due to maintenance and technical problems. Web servers with consistent records of an uptime of 99.5% or better are considered reliable.
A computer that manages Web site services, such as supplying a Web page to multiple users on demand. ^^mukx
Difference between earthed and unearthed cable?
For earthed and un earthed XLPE cables, the IS 7098 part2 1985 does not give any difference in specification. The insulation level for cable for unearthed system has to be more. In simple statement the manufacturers states that 11 KV earthed cable is suitable for use in 6.6 KV unearthed system.The process of manufacture of cable is same. The size of cable will depend on current rating and voltage level.
Is an ATM an input or output device?
It is both
How do you configure Windows NT RAS Server to Windows 2000 Ras Server?
Add the RRAS computer to the appropriate group:
1. Log on to your computer with an account that has administrator privileges on the Windows 2000 domain.
2. Launch the Active Directory Users and Computers MMC snap-in, and then double-click the domain name.
3. Double-click the Users folder, and then double-click the RAS and IAS Servers security group.
4. Select the members tab.
5. Add the RRAS server to this group.
If the organization has more than one domain in the forest, and users from the different domains are trying to log on to the RRAS server, continue to follow steps 1 through 5 until the RRAS server is in the "RAS and IAS Servers" security group for each respective domain.
Use the Netsh.exe Utility
The Netsh.exe methods can only be used if the RRAS server is Windows 2000-based.
Use either of the following methods with the Netsh.exe tool:
1
Log on the RRAS computer using an account that has domain administrator privileges, type netsh ras add registered server at a command prompt, and then press ENTER.
2
To run a command with administrator privileges without being logged in as an administrator:
1. At a command prompt on the RRAS computer, type runas /user:domain name\administrator name "cmd", where domain name is the appropriate domain name, and administrator name is the appropriate administrator name. You are then prompted to enter a password for this account. If this computer is able to connect to the domain controller and verify the credentials, a command prompt opens with the following information in the title bar:
cmd (running as domain name\administrator name)
2. At a command prompt, type netsh ras add registeredserver at a command prompt, and then press ENTER.
Is 10.1.1.1 a private IP address?
Yes, it is an address in one of the private IP address ranges that have been defined and reserved.
The private IP address ranges are set as:
10.0.0.0 through 10.255.255.255
172.16.0.0 through 172.31.255.255
192.168.0.0 through 192.168.255.255
Any address in these ranges can be set up and used by homes, offices, and anyone else and the communication will not be routed to the Internet because they are defined as unroutable. They also will not cause any IP address conflicts on the Internet since nothing Internet-accessible exists in those address ranges.
If you have any other questions about IP addressing, feel free to drop me a line.
If a computer is found to have an IP address of 169 254 1 1 what can you assume about how it received that IP address?
Automatically
169.254.x.x is the APIPA (Automatic Private IP Addressing) range for Computers.
This range in Windows is allocated automatically if no DHCP servers responds or is unavailable in the Network.
IF DHCP server is selected in IP Configuration Settings then one can configure APIPA settings.
Give three examples of specialization and division of labor in what areas are you and your friends thinking of specialization what might be the perils of over specialization?
The enormous efficiency of specialization allows the intricate networking of trade among people and nations that we see today. very few of us produce a single furnished good; we make but the tiniest fraction or what we consume we might teach a small part of one college's curriculum, or empty coin from parking matter or separate the genetic material of fruiting files, in exchange of this specialized labor we still receive income adequate to buy goods from over the world.
Advantage economics engage in specialization and division of labor, which increases the productivity of their resources.
ANSWER
Explain what happens if the market price starts too high or too low? i belong to Pakistan so i definitely try to think about the specialization in agriculture because my country has 70% dependency on agriculture... cost of production of agriculture products are far less than other countries... so my area will be agriculture.
the perils of specialization are its disadvantages... in some cases monopolies generated through this type of specialization.
What are 10 input and output devices?
Input Devices:
Keyboard, Mouse, Scanner, Microphone, Joystick, Web Cam, Optical Mark Reader, Optical Character Reader, Optical Bar code Reader, Touch Pen, Graphic digitizer, light pen, Touch pad\screen, Track ball
Output Devices:
Monitor, Printer, Plotter, Speaker
Both:
CD, Pen-drive, MODEM, hard drive, tape drive, disk drive
What is message control system?
A method for controlling messages in a software system. The method activates a report-handling module when a subroutine has a message to send. The subroutine passes an identification to the report-handling module. The subroutine then passes a message and message level to the report handling module. The report-handling module then determines the message level to be reported for that subroutine, the process from which that subroutine is sending messages and the message level to be reported for that process. If the message level of the message compares correctly to the message level of the subroutine and the process, the message is reported.
When the trust relationship between a workstation and domain has broken down how can you fix it?
One Way: When you try to log-on or connect to a computer and you receive an error stating: "the trust relationship between this workstation and the primary domain failed," don't panic. In order to fix this problem, you remove the workstation from the domain by accessing it with a local administrator account and then rejoining it to the domain.
Step by step:
* Log-on on locally to the workstation with a local administrator account.
* Right click "My Computer" and select properties
* XP: Select the tab Computer name
VISTA / Windows 7: Select change settings next to the computer name
* Click on Change
* Change the Member of selection to WorkGroup and enter anything you like
* Click OK
* in the The computer must restart prompt click OK
* back in the computer name tab click on change again
* Change the Member of selection to domain and enter the domain name
* Click OK
* enter the credentials of the users which is permitted to join the computer to the domain
* in the The computer must restart prompt click OK
* back in the computer name tab click OK
* on the restart computer prompt click restart now.
When the computer is restarted the problem should be gone.
Another Way:
Actually there is another way you can do this without losing your credential to the domain controller or having to copy all the files to a new user since chances are it might happen because it might see the PC as a new PC ( Maybe ) try the same steps but use the NETWORK ID option right above CHANGE under the system properties and follow the steps. This way it will noticed that the computer you are joining has the same name as one on the domain and it will ask you to if you would like to use the same name. Go ahead and say YES and it will rejoin the computer or laptop back to the domain fixing the connection to the domain and not making any changes to the computer or the users already in the computer. If you remove the computer from the domain and rejoin it you might have to recreate all the accounts and copy all the files in all the different locations of each user. This step will fix the connection issue without make any changes to the computer and this is what you want, not extra work.
So what do you do when you can't even log on as the local admin? I tried the two admin accounts that I have, the standard Administrator and another.
If you can't login as a domain user or local admin and can't access the box remotely then it's time to give up. If the drive(s) contain data you want to keep then I would put in a different hard drive, re-install the OS, and then try to mount the drive(s) and recover data. when ever my computer should break down for any reason i call a computer tech out to have them work on it to get me back up and running
What is the default port number for HTML?
port 80
What are the 13 main Public-Root dns Servers?
The are called A, B, C, ...
These are the highest level of the DNS hierarchy. Ultimately, any DNS requests that can't be solved at a lower level (through the use of a cache) is traced back to those 13 root servers.
What does a transmission control protocol do?
TCP is acronym for transmission control protocol. TCP is a network layer protocol. TCP is a connection oriented protocol that establishes connection before sending message .
How do you network two PCs together directly using a cat 5 cable?
Easy Setup:
Connect 2 Computers Directly Using Crossover Cable
http://www.home-network-help.com/crossover.HTML
you will need a crossover cable to do this. pairs are switched allowing communication to occur without a hub or router
TAKE THE CAT5E CABLE AND TWO JACKS.YOU WILL FIND 4 PAIRS OF WIRES. LIKE OW-O,BLUEW-BLUE,GREENW-GREEN,BROWNW-BROWN. IN THIS THERE ONLY FOUR WIRES ARE NEEDED. supoose you have crimped one side like this ow-o-gw-g-blw-bl-brw-br.then other end will be gw-bl-ow-bl-o-brw-br.
ow-orange white o-orange blw-blue white bl-blue grw-green white gr-green brw-brown white br-brown COLUR CODE : 1----3 2----6 3----1 4----4 5----5 6----2 7----7 8----8
And- Both computers need to have a NIC(Network Interface Card) installed.
- The computers need to have different IP addresses in the same IP subnet. This gets set in Network Properties - TCP/IP Properties. Easiest would be to set one at 10.0.0.1 and the other at 10.0.0.2, both with a netmask of 255.255.255.0
SOMTIMES
A NIC will have the crossover setting in the device driver
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 does an SSID looks like?
The SSID (Service Set Identifier) can look like words, names, numbers, or whatever you want.
How do you let someone use your wireless network?
put their computer in range,set to IEEE 802.1 or something on control panel corresponding to the server of your network and give them the password if there is one.
MPGMichael
Let's assume the person you want to allow on your wireless network has a wireless network adapter in their computer.
Wireless networks are limited in range. There are several standards for wireless routers aka access points. Depending on your standard which is probably 802.11b or 802.11g for your home network the distance will vary. Also distances are increased for outdoor use because there are no signal obstructions.
Let me guess you are using 802.11g and say that the specification is 27 meters or about 90 feet indoors.
The steps to share your wireless connection should be fairly simple
· First have your friend click on the wireless icon in the system tray for Windows 7x
· A list of wireless networks that are in range will be displayed
· Click on the one that is yours and you will see an option to connect
· If you have a security key phrase assigned or a default security key they will have to enter it in the box that opens while trying to connect.
· If you forgot the network security key then right click on your wireless connection on your own commuter and select properties.
· When the properties box opens select show character in front of the Network security key to see the current key
· The steps are very similar for Vista but you may need to ask the question again with more specifics like your operating system version, and possibly your type of wireless network appliance.
Why ip address is required?
IP address uniquely identify a system over a network. Using IP address system communicate over the network. Thus making IP address a need more than a requirement.
Bethere newsgroup server?
There isn't a news (NNTP) server.
What do you call a template for a workstation configuration that contains all the software the workstation requires?
the answer is refrence computer
