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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
Describe the importance of DNS to AD?
When you install Active Directory on a server, you promote the server to the role of a domain controller for a specified domain. When completing this process, you are prompted to specify a DNS domain name for the Active Directory domain for which you are joining and promoting the server.If during this process, a DNS server authoritative for the domain that you specified either cannot be located on the network or does not support the DNS dynamic update protocol, you are prompted with the option to install a DNS server. This option is provided because a DNS server is required to locate this server or other domain controllers for members of an Active Directory domain
Where is a wireless router connected to a computer or modem?
A wireless router will usually be connected directly to a high speed modem between the modem and any other device. This allows the router to correctly pass internet requests from the local network (computers connected wirelessly or to a standard port) to the ISP (the high speed modem connected to the Internet port).
Connecting a wireless router to a computer would be unusual but it could function if connected to the network port on the computer provided the router-computer connection was properly configured. In this case the computer would have to be configured to route.
On the transmitting end, there's a couple different methods. Linear amplification is a common one, for simplex, half dulplex, and full duplex transmission units. For full duplex transmission, the use of repeater towers. On the receiving end, preamplification of the incoming signal.
How do you set up a network firewall?
You can setup your network firewall with your accessing router. consider you are using the Belkin Router : than follow these steps :
Access the Belkin router setup utility via the web browser. For doing that, browse the Internet and enter the '192.168.2.1' in the browser's address bar. Click 'Enter' to continue. On the login web page, type your router password and click the 'Submit.'
On the setup page, click the 'LAN Setup' menu in the left corner window. Now, you can see the current configuration of the firewall of the router. In Features section, check that the firewall is turned on or not.
Once you assure that the firewall is not enabled, click the 'Firewall' menu to display the firewall settings on the screen. Click the 'Enable' button to select it and then 'Apply Changes' to save your settings.
That's all process allow you to enjoy setup the firewall on the Belkin router and the safety and protection when online or offline.
How are the devices inside a computer connected together?
The USB port is a port used to connect outside devices with a compatible USB port to the computer. A few examples of these devices are USB key drives, tablets, and printers.
16 read rfc 959 for ftp list all of the clients commands that are supported by the rfc?
What is the best cable to use for DSL?
Cat6 cable is the very best. There is a Cat7 in the works but it is not yet readily available and the connector is different. So if you get Cat6 you have the very best available that will work on most everything. Coax DSL cable is superior but mainly used in industrial applications. A Cat6 shielded cable is also quite effective. In a pinch i have run two Cat6 side by side and punched the blue and orange of the first and the green and brown of the second cable on a single jack. This prevents crosstalk thus data loss. The Cat7 cable is a joke. It does not use an rj45 and is heavily shielded as to almost make it impractical.
What Cable configuration used in PC to router connection?
Use a straight through cable, just as you would with a hub or switch.
Why must the server program be executed before the client program?
A server program must be executed before the client program because once a client is run, it will attempt to initiate a connection with the server. If the server is down, then the client will not be able to make a connection.
How you can connect 2000 to XP?
I am not an expert in IT but here is what I have done when networking the 2000 and XP.
Hardware The most obvious is the hardware requirement. A network card on each machine and a CAT5 cross-over cable to link both machines up.
Assumption: No domain has been setup but only the workgroup.
Software configuration Under XP Professional, you need to run the Network wizard. By following the dialogs and a XP setup disc, the wizard will complete in no time at all. There are a few selection on how you would like the configuration for your network. I think the issue is whether you also want internet sharing as well. Yet this is another matter.
A network bridge would be setup automatically. You can check this by going to Control panel, Network and Internet Connections and Network Connections. Open the Network bridge properties and you would see a setup for Local Area Connection. Goto the bottom dialog and select TCP/IP then click the Properties button.
Select use the following IP address, then do the following: IP address: 192.168.0.1 Subnet: 255.255.255.0 Then OK to leave all the settings.
Under 2000 professional, the most important is the same computer workgroup name as the XP machine. Goto Network and Dial-up Connections. double click on "Make New Connection", select the last point and follow the rest of the instruction. You need to select "Obtain an IP address automatically" under TCP/IP properties and "Obtain DNS server address automatically".
Just to remind you that "File and Printer Sharing for Microsoft Networks" should also been installed on both machines.
Now the setup is more or less completed.
On both machines, open up a command prompt window and do the following:
1. Type in "IPconfig /all" to check the IP address of the both machines. The XP machine should have
Connection-specific DNS Suffix: <none> Description: <your hardware network card name> DHCP Enabled: No IP address: 192.168.0.1 Subnet: 255.255.255.0. Default Gateway: <none>
The 2000 machine should have
Connection-specific DNS Suffix: mshome.net Description: <your hardware network card name> DHCP Enabled: Yes Autoconfiguration Enabled: Yes IP address of 192.168.0.100 (for example) Subnet: 255.255.255.0. Default gateway: 192.168.0.1 DHCP Server: 192.168.0.1 DNS Servers: 192.168.0.1
Then use the Ping command on both machine to check the network is working. The last thing to check is that a network icon is active (ie. flashing) at the right hand bottom of the task bar.
Remember if you want to share you files and folders on your XP machine, remember to place them in Share document folder. Then your 2000 machine can map the drive to see and work on the files.
Sorry a bit long but I suppose it is worth it. Because I am no expert on this subject, there must be a better way than mine and I would love learn from other readers.
IMAP4 servers require less storage space and usually more processing resources than POP servers do?
Because IMAP stores email on the server side and POP does not, IMAP requires more storage space than POP does.
When using group policy on a computer in a workguop which type of configuration do you use?
from CompTIA A+ Guide to managing & maintaining your PC. (pg 650) - For a standalone computer or a computer in a workgroup, to control the computer for all users, use Computer Configuration instead of User Configuration to implement Group Policy settings.
A: Computer Configuration
Where can one look up addresses by name?
To look up addresses by name you can go to White Pages, Yellow Pages, Address Search, Who Where, People Smart, Canada 411, Zaba Search and Switchboard.
The answer is &F.
And you can use the command AT&F (Which is preferred to ATZ when trying to solve a modem problem).
Difference between classful and classless ip addresses?
The difference between classful IP addressing and classless IP addressing is in selecting the number of bits used for the network ID portion of an IP address. In classful IP addressing, the network ID portion can take only the predefined number of bits 8, 16, or 24. In classless addressing, any number of bits can be assigned to the network ID.
Purpose of IP address and domain name?
Think of it as your street address on the internet.
For example, when a public edit is made on a Wikipedia page, your public IP address is listed. If you vandalize and screw up several pages, they use that address to block your edits from happening again.
A similar case is used in omegle.com's video feature. Your public IP address is associated with your computer. If the website detects a bad reputation (ex. indecent exposure), your IP will not be permitted to access that site.
The Internet is the largest example of a WAN?
The Internet may not be the best example of a WAN, but it is the most known because it is the most visible to users.
The most commonly used network protocol is Internet Protocol (IP), this is the protocol used within the Internet, this protocol is a derivative of TCP/IP Transmission Control Protocol/Internet Protocol. This is used in 99% of common corporate networks, the TCP components deals with efficiencies of network transmission. TCP/IP or IP overlays the common Ethernet networking topology.
A network technician is required to provide access to the Internet for a large company?
Sort of. Access to the internet is provided by an ISP (internet service provider) and a network technician's job is 1. to determine if your business is able to access the internet and 2. connect the proper cables to provide access to the internet.
google search for subnet mask calculator:
10.10.128.1 - 10.10.159.254 -- effective range
10.10.128.0 is the marker IP
10.10.129.255 is the broadcast IP.
What is the encryption process?
Encryption is a way of making data unreadable to someone who is not supposed to be seeing that data. For example, if I wanted to send you the data "ABC", but I didn't want anyone who intercepts that data to be able to read it, then I would tell you beforehand that I am going to increase each letter one place in the alphabet. So I would send you "BCD" and you would un-encrypt my information back to "ABC". This is, of course, a very simple example, but at its core, that is what encryption is.
Explain how to calculate a hosts network id given its ipv4 address and subnet mask?
To calculate a host's network ID given its IPv4 address and subnet mask, you follow a logical
process of combining bits known as ANDing. In ANDing, a bit with a value of 1 plus
another bit with a value of 1 results in a 1. A bit with a value of 0 plus any other bit results
in a 0. If you think of 1 as "true" and 0 as "false," the logic of ANDing makes sense. Adding
a true statement to a true statement still results in a true statement. But adding a true
statement to a false statement results in a false statement.
