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Local Area Network
Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations
4,003 Questions
What does it mean for 2 computers to be networked?
Computer networking allows 2 or more computers to share information. The two computers are either linked to each other directly through a crossover network cable (peer-to-peer network), or through one or more intermediate hubs, switches and/or routers. Wireless routers allow 2 or more computers to network without being physically wired to the network.
What protocol maps layer 2 to layer 3 addresses on the TCP IP network?
RARP (Reverse Address Resolution Protocol) maps layer 2 addresses to layer 3 addresses.
ARP (Address Resolution Protocol) maps layer 3 addresses to layer 2 addresses.
Which two Ethernet fiber-optic modes support distances of greater than 550 meters?
C. 1000base-lx
1000base-zx
How the dhcp lease time renewed when the server and client in different time zone?
Leases are retained in the DHCP server database four hours after expiration. This grace period protects a client lease in case the client and server are in different time zones, the individual computer clocks are not synchronized, or the client computer is off the network when the lease expires. Expired leases are included in the list of active leases and are distinguished by a different icon.
What is the 1991 Madrid Protocol?
The Madrid Protocol went into effect in 1991. The protocol was put into place as a way to preserve and protect Antarctica.
How secure are peer to peer networks?
There is no security. P2P wasn't designed to be secure. Anyone can see what files you are downloading and sharing, and what you are searching for. But as long as there is no personal information on the files that you share, the only information about you as a person that they can get is your IP address, which isn't very useful. Your ISP and the police are the only people who can find out who you are using your IP address. You could make P2P slightly more secure by using an encrypted proxy. -DJ Craig
Diagnostic tool used to collect data?
Dianostic tool is use to check the promble in your car,this is a website about dianostic tool:www.obd2works.com
Which protocol is network layer of tftp?
The network layer protocol of TFTP (Trivial File Transfer Protocol) is typically UDP (User Datagram Protocol). UDP is used for its simplicity and low overhead, making it well-suited for simple and fast file transfers.
Advantages of cluster computing?
Reduced Cost, Processing Power, Improved Network Technology, Scalability, Availability
What is steel tape armored cable?
Armored cable that has a inbedded tape that is used for grounding purposes.
The steel tape is wrapped around the inner conductors which carry the load current. A heavy rubber coating is applied over the steel tape layer. The steel and heavy rubber helps protect the cable from physical damage, e.g. by someone digging in the ground where the cable is buried.
List at least two differences between FDDI and Token Ring?
Token Ring
- 1 Token on Network
- 4 mbps or 16 mbps
- 1 Ring
- STP or UTP
FDDI
- Multiple Tokens
- 100 mbps
- distance 100km
- Fiber used in most implementations
- Dual Ring
Internetworking with Cisco and Microsoft Technologies, pg. 237
TTL (Time to Live) is reduced by 1 every time a router forwards the packet. The purpose of this is to reduce the negative effects of routing loops. If two routers are misconfigured (it happens) and send a packet back and forth to each other assuming the other router will take care of it, the packet would simply never go away, if it wasn't for TTL. It guarantees that this can only happen a maximum of 256 times (generally quite a bit less). Once that TTL reaches zero, the packet is discarded.
Why you use bridge on a network?
Bridges are used to connect two physically separated pieces of the same network.
What is a Ethernet switch used for?
Ethernet switches are used to make possible communication between different network meaning, switches create networks. Also switches use different mechanism of forwarding communication between computers as well as it does not share one channel for multiple computers.
What mechanism does ARP use to resolve IP addresses?
ARP is a Third layer or Network layer protocol. ARP is an address resolution protocol . The mechanism used by ARP to resolve IP address is look up table.
Do lans connect groups of networks using isps?
I'm pretty sure LAN's are a group of computers connected to each other through routers/modems or ethernet cables. The internet it similar to LAN's but instead of connecting to other computers close by, it connects to computers all around the world.
What are the two characteristics of peer-to-peer?
The ability to get a virus easily, and speeds are slower.
Why do you have to activate a DHCP scope?
A DHCP (Dynamic Host Configuration Protocol) scope defines the valid pool of IP addresses that can be assigned to the network. You need to activate a DHCP scope so that the IP addresses that are issued (or leased) to the client devices will be compatible with the network configuration. If a client is issued an invalid IP address it will not be able to communicate on the network.
Can you show the wiring diagram for cat5 and cat5e and cat6 cables?
WikiAnswers cannot show pictures or diagrams.
