answersLogoWhite

0

📱

Local Area Network

Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations

4,003 Questions

What are the devices that work on physical layer?

1) Physical layer is the first layer. 2) The simplest ones operate at the physical layer are: Repeaters, conventional hubs and transceivers. 3)These devices have absolutely no knowledge of the contents of a message. They just take input bits and send them as output. Cheers, AceInfo Solutions.

How do you make your desktop screen smaller?

Make sure that you do not run Firefox in full screen mode (press F11 or Fn + F11 to toggle; Mac: command+Shift+F).

If you are in full screen mode then hover the mouse to the top to make the Navigation Toolbar and Tab bar appear.

You can click the Maximize button at the top right to leave full screen mode or right click empty space on a toolbar and use "Exit Full Screen Mode" or press F11.

What is encoding technique?

There are four possible combinations of

encoding techniques

-Digital data, digital signal

-Digital data, analog signal

-Analog data, digital signal

-Analog data, analog signal

How do you remote control another computer from anywhere?

There are many answers but the best one will depend on your budget and your needs.

WindowsXP Pro, and some Vista versions have remote desktop included at no cost.

There are also dozens of third party applications like PCAnywhere, or VNC.

There are also website based systems like go2mypc.com

What is needed to connect wan to lan?

Typically a LAN is connected to other networks (WANs, etc) via a router, used as a default gateway device.

How do you use a network switch?

Network switches are used to connect two different segments of a LAN. If a LAN has to many nodes (objects on the LAN) that are communicating, the chances of a collision occurring are higher. To lower this chance and to increase bandwidth add nodes that communicate with one another often (such as two computers and a printer) then connect the output to the LAN (everything else). This will keep bandwidth lower and will lower collisions.

However a switch isn't allways the way to go. If you have a smaller network (say a max of 10 computers or so) you might want to use a router instead. Routers help direct trafic. So two nodes can talk while others on the same LAN are too!

What advantages does IPv6 have over IPv4?

ip6 can handle many more addresses than ip4 - allowing more people to join the Internet.

Which model is practically used OSI or TCPIP?

The OSI model is used today with current networking standards. It covers more than the more limited TCP/IP model.

If you have been assigned network ID 172.16.50 with a subnet mask of 255.255.255.0 What is the maximum number of workstations you can have on the subnet?

Since this is a class B network you have borrowed 8 bits for subnets. This leaves 8 bits left (1 octet) for clients/workstations. That gives you a maximum of 254 clients per subnet.

How many bits make up IPV4 subnet mask?

The subnet mask itself is an IP Address so it is also 32 bits

What characteristics define a LAN-based network as opposed to a WAN-based network?

LAN: Limited geographical area usually within the same building.

WAN: Larger global Network with no physical boundaries.

What does a great advantage of a VPN provide?

A VPN provides a certain amount of anonymity when using any Internet-connected device. It works by rerouting your IP (Internet Protocol) address so that your final address when connecting is different.

This conceals some information that could be used to track you to a city. Although it is unlikely that you can be tracked further, your device can also be identified from your IP by finding your Internet Provider and demanding a list of who an IP was assigned to. Using a VPN negates this possibility.

How many routers do you need for each subnet?

It depends on how many subnets you have and how many ports you router has. Usually each port in router is devoted to on subnet, you can do math for your situation.

What command do you use to determine whether you can reach another computer on the local network?

"ping" will test for connectivity to a device at the Ethernet Address Level...but that does not mean the device's software is actually talking to the network or responding to the network. "ping" WILL tell you the device is wired up and has power applied to it's network interface board.

What are the advantages of ordinary twisted pair compared to the shielded ones?

Twisted pair wire is placed inside a thin metallic shielding, similar to aluminum foil, and is then enclosed in an outer plastic casing. The shielding provides further electrical isolation of the signal-carrying pair of wires. Shielded twisted pair wires are less susceptible to electrical interference caused by nearby equipment or wires and, in turn, are less likely to cause interference themselves. Because it is electrically "cleaner," shielded twisted pair wire can carry data at a faster speed than unshielded twisted pair wire can.

The disadvantage of shielded twisted pair wire is that it is physically larger and more expensive than twisted pair wire, and it is more difficult to connect to a terminating block.

What dhcp option should you modify to make sure you are not wasting addresses that were used by clients who've completed a class and no longer need them?

To keep from wasting addresses you need to use a short lease time so that the IP addresses are reused after the class. Set the lease time interval to a value that is shorter than the class period.

What conculsion should you draw from a loopback test that reports dropped packets or an unreachable host?

Short answer is that 'dropped packets' happens when the network is unstable so not all of the information sent out by you is received at the other end. One reason you have 'unreachable host' is the host computer is switched off. There are other reasons but making the network more reliable is the best solution

How do you affix bnc connectors to coaxial cable?

Hi,

True BNC connectors have four parts. The main body, a metal washer, a specially shaped rubber washer and a screw in ferrule to hold it all together. They also require some soldering to do it properly.

And since you're asking, installing a true BNC connector would require several pages of typing to explain how. There are two alternatives: Find a broadcast engineer or video technician who'll show you the process, or just get some screw on type connectors, which are easy to figure out and install. They'll also work quite dependably, too.

Hope this helps,

Cubby

Factors that can affect the response times on a LAN?

Hi, I assume the cable is UTP cable. 1. Cable length (from the switch/hub to the PC) is more than 100 meters
2. Poor crimping (putting connector)
3. Poor connections Jack panel
4. The IRQ address of the LAN card is clashing with any other device in the PC
5. Connecting 100Mbps card to 10Mbps network
6. IP address clash with another PC's IP address (same IP defined in more than 1 machine)
7. Route table definition in the Switch/Router Things like this are the main cause of poor performance Hope this helps

If you upgrade a 24 port hub that serves one of your organizations workgroups to a 24 port switch for better performance how have you also improved security?

If you have switch from hub to switch, the answer is yes of course. Hub uses broadband connections all the time, when switch creates a virtual channel for each connection. It protects your network from somebody who wants to collect network packages which do not belong to that person. Some router have manageable interface and allow even filtering. Depending on model you are using you benefit more or less but still benefit anyway.

Trending Questions
When acting as a DHCP server an integrated router can provide what three types of information to a client choose 3? Can you cross two cable trench? Which Avoids the problem of IP hosts being unable to communicate if the DHCP server is unavailable for some reason? What is the importance of data communication system? What does MAN means? Why Hub comes on Physical Layer device? What are the disadvantages of a sever based network over a peer to peer network? Which layer of the OSI model is responsible for issuing acknowledgments (ACKs)? Which network tool can you use to accomplish this task? What is specified by the network number in an IP address? What three routing protocols are distance vector routing protocols? Software trends in client server computing? An 802.11b compliant wirelesss lan configuration using DSSS can have a maximum of how many non-overlapping co-located access points? Difference between CAN and LIN communication protocol? Term for the point where wireless devices can connect to a LAN? If hub is replaced with switch is there any changes in collision domain? Is ATM a WAN technology that functions in the Data Link layer? At which layer does a WAP operate? A network has grown too large for technicians to configure network addresses and hosts files for name resolution Which two application layer services should be added to the server to allow these? What computer network that is defined as two or more computers connected to communicate with each other?