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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
what mus i use to assessing the risk to approve a credit application
The card provides a port for a network cable to connect the PC to a network?
Lan Card provides a port for a network cable to connect the pc to a network..
LAN : Local area network
or
Ethernet Card and Network Card
What is the difference between a logical network and physical network?
ll for starters a physical network design well, as the name implies, involves the physical connectivity of each of your hosts on the network. this speaks of the actual physical layout of your network which includes the actual nodes, segments and hosts that appear on the actual layout. on the other hand, a logical network speaks more of data flow in your network. this may be of the different forms of network topology (e.g bus, ring, etc).
the difference of the two lies in the way they are presented. one being the real connection layout (physical) while the other is of how data flows within the network (logical).
think of it as like cars and roads. the roads represent the physical network wherein each road are interconnected and ends with a destination while the cars represent the logical part of the network wherein they move towards a certain destination within the network. although physical and logical networks vary in meaning still they work hand in hand to better define the same single and structured network.
A physical network is different from a logical network. Logical networks are defined at the Network layer by the arrangement of the hierarchical addressing scheme. Physical networks represent the interconnection of devices on a common media. Sometimes, a physical network is also referred to as a network segment
What is a virtual network of AHIMA?
Communities of Practice (CoP)
Referenced from the book Health Information Management Technology; An Applied Approach, by Merida L. Johns, 2011 Published by the American Health Information Management Association (AHIMA) Chapter 1, page 17, 6th Paragraph
Why do you have slow ping times on your cable modem internet service?
a dial up line does not have nearly the bandwidth of cable or dsl. because of this data transmission is considerably slower then cable and dsl. because of this it takes longer for a ping to be sent and return to your computer. you can expect to get much faster pings with cable or dsl. This isn't exactly true. 'Bandwidth' and 'Latency' are different terms. The latency (or ping, if you want) behind dial-up connections actually lies behind the modem itself. This is why ISDN or DSL connections have a much lower latency compared to dial-up connections, despite them both using your phone line. A DSL connection capped to 56k (yes, it does exist) still has a much lower latency than a dial-up. The bottom line is, dial-up connections have a high latency due to the hardware used, rather than the bandwidth.
2 What is the maximum distance of Cat 5e cabling for data transmission?
That depends on what you will be using the cable for.
In general, the higher the frequency of the signal being sent down the cable, the shorter the cable has to be.
The environment of the cable is also important. If the cable is in an electrically noisy environment, it needs to be shorter.
There are various standards that specify the maximum length of a cable. Sometimes it will work (some of the time) if you use a longer piece of cable, but following the standard is much more likely to work correctly all the time.
Some examples from computer networking standars:
For 10BASE-T Ethernet, the maximum length of a cable is 100 meters. Note that this standard was defined for Cat 3 cable, so you'll probably be able to use Cat 5e cable to send the signal further. However, there's no standard specifying how much further - you'll probably have to test it yourself.
For 100BASE-T Ethernet, the maximum length is also 100 meters, but the cable grade is specified as Cat 5 (not Cat 5e). So you might be able to make a longer run work with Cat 5e.
For 1000BASE-T Ethernet, again the maximum length is 100 meters, but now the cable must be Cat 5e. Also, all four pairs of the cable are used, whereas in the other two standards only two pairs are used.
HTH,
Gdunge
Can you hook up your wireless cable router to a non-wireless router?
You should be able to do that, but some minor tweaking of setting might be required.
What layer protocol is used for email?
the protocol used for email is simple mail transfer protocol and the layer is transport layer.
Describe the structure of an ip address?
IP addresses identify devices on the internet and other TCP/IP networks. They comprise four numbers separated by periods. The first part of an IP address identifies the network, and the last identifies the host. MAC addresses are used only for communication within a local network.
There are four octects in a IP address. IP address can be assigned, MAC address are embedded in the (NIC)
IP address is a 32 bit address consisting of a series of four 8 bit numbers separated by periods. An IP address identifies a computer, printer, or other device on a TCP/IP network such as the internet or an intranet.
Mac address is a unique 42 bit address permanently embedded in a NIC and identifying device on a LAN.
Source: CompTIA A+ Guide to Hardware by Jean Andrews (page 468)
An IP address is a 32-bit address comprising a series of four 8-bit numbers separated by periods. An IP address identifies a computer, printer or other device on a TCP/IP network such as the internet or intranet.
Advantage of error detection and correction?
To be able to detect or correct errors, we need to send some extra bits with our data. These redundant bits are added by the sender and removed by the receiver. Their presence allows the
receiver to detect or correct corrupted bits
Which layer of the OSI model is responsible for formatting and encrypting data?
The layer of the OSI Model that deals with encryption, would be the sixth layer, the presentation layer. It deals with the SSL/TLS protocol which pretty much just turns your regular HTTP (hypertext transfer protocol) into HTTPS (hypertext transfer protocol secure.) It adds an encryption to certain web pages that would deal with you credit card or any other private information dealt with.
Commonly,it blocks objects off the Internet from entering your Local Network without authorization.But most firewalls in Anti-Virus programs (AVG,Avast,etc.) block harmful programs from getting into your computer.
How old do you have to be to have MSN Messenger?
There is no minimum age to have a Hotmail email account, but if you are under the age of 13, at signup Hotmail will require a parent to approve of you by submitting their email address and having them approve of your account creation.
The OSI model and protocols involved in each layer?
Go to the Wiki for OSI model -that discussion and listing is very good.
Which type of network spans a single building or campus and provides services?
Small,closed Networks are usually some kind of (W)LAN ((Wireless) Local Area Network) which use Routers and Ethernet-Switches to provide the communication channels for network based software, since the LAN itself is just the infrastructure.
Larger networks may be split into logical units using VLAN (Virtual Local Area Network).
Clients outside the LAN can for example use Browsers (web) or VPN to connect to the machines inside the network.
, the Ping command provides you with a parameter that configures the command to continuously ping the target device until you manually terminate the operation:
Ping -t xxx.xxx.xxx.xxx
In this command, xxx.xxx.xxx.xxx is the IP address of the target device.
To temporarily interrupt a continuous Ping operation and display the statistics, press [Ctrl][Break]. To completely terminate a Ping operation, press [Ctrl]C.
What are the benefits of network compared to stand alone PC?
* share software * share information with others on networks * share peripherals * speed of sharing software and information files * cheaper than buying individual software and hardware for each standalone especially if for a school, network software often offers deals for amount being purchased * security, files can be copy inhibit mode * centralized software management- software being loaded onto one computer but also this loads software to entire network at one time
* electronic mail(e-mail) between network users, ideal for office memos * flexible access- access you files from any computer on the network unlike standalone which would mean only being able to access your data from the one computer you uploaded data onto
mac protocols are medium access protocol. mac is sublayer of data link layer in osi model.it provides addressing and medium access mechanism
How do wireless printers work?
A wireless print server is a device which will enable you to share your USB or Parallel port printer on a wireless or wired network.
The print server can be configured to connect to an existing wireless network and can then be connected to the printer via the USB or Parallel port, once this has been done the printer should be available for use on any computer on the network.
Why do you need a static IP address to use a remote desktop?
It's not true. You can use a dynamic ip address to use remote desktop! Problem with dynamic ip addresses is that it can be changed any time, and you will not able to connect to your PC. The best way is to use full computer name. It does not depend on ip address.
