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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

Do you have to pay to get into crunchyrollcom?

No you dont need to pay to get a crunchyroll you only need to pay is you wanna become a star member.

What does it mean when your girl hangs up on you then sends you a text message 5 minutes later?

this means that she wants you to know that she is mad but she still wants to talk to you. its really wierd. i have done it once and decided it was stupid, but I know alot of girls that do it. hope that helps !

What is ROWA protocol?

A typical replica control protocol that enforces one copy equivalence is the Read-Once/Write-All (ROWA) protocol

which maps each read operation a logical data item to a read on one of the physical copies which may be determined by

performance considerations. On the other hand, each write operation on a logical data item is mapped to a set of writes

on all physical replicas. ROWA protocol is simple and straightforward, but failure of one site may block a transaction,

reducing database availability

Cables types does NOT use copper wires?

Fiber Optic cables do not use copper wires; they use either glass or plastic for the transmission medium.

Aluminium is also used in certain applications, instead of copper, as it is cheaper although very slightly less conductive.

I don't know the present situation, but aluminium-cored wires were introduced into the British telephone networks in the 1970s, at least for local distribution; whilst aluminium bar material was used for the main bus-bars supplying low-voltage power to the switches in the telephone exchanges.

What types of network management software exist?

There is Frame Flow, which will monitor network infrastructure and IT systems all the time. Net Gong is also an option. It will monitor connectivity and device availability of the network.

Why cable glands not used for HT cables?

Cable glands are typically not used for high-tension (HT) cables because HT cables require specialized termination methods to manage the high voltages and prevent electrical arcing. HT cables often use insulated connectors and terminations that provide better sealing and insulation properties than standard cable glands. Additionally, the mechanical stresses and environmental factors associated with HT applications necessitate robust solutions that adhere to specific safety standards, which standard cable glands may not meet.

What is the difference between path and route?

I did not found any differences other than that they have different names.

Path: must be used during REGISTER, and then use Route: afterwards.

Explanation: the Registrar will store the content of your Path: header used during the REGISTER phase, into the Route: header in subsequent requests (Registrar -> UAC).

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folays

What is a CAM router?

CAM is Computer Aided Manufacture and the router is the machine with a high speed drill peice which cuts or engraves through your material whilst sync with your software.

How effective is big ip?

The big ip is very effective in delivery controller. It is a great application. It allows for a lower bandwidth and faster downloads. It gets what ever job that you need done. It has some fierce competition but the big ip is very effective.

Why there is restriction on generation of an ICMP message to a failed ICMP error message?

ICMP messages are of interest both to end-hosts and intermediate routers, although some messages are generally only sent by routers. It is never permissible for an ICMP error message to be generated as the result of receiving an ICMP error message-this avoids the infinite recursion of ICMP message generation (see RFC 1122, related link.). It is also forbidden to send an ICMP message as the result of a datagram that references multiple hosts, such as a broadcast or multicast message, or upon receipt of a noninitial fragment (see the "IP Fragmentation" section earlier in the chapter). These restrictions are designed to prevent broadcast storms.

Optical fiber VS coaxial cable sound?

Optical fiber vs Coaxial cable...

Optical fiber is glass strands and uses light to transmit the sound in 1's and 0's (digital). No interference from magnetic fields, lights, power transformers and other things that can introduce noise into your sound or music.

Coaxial cable is metal strands and uses electrical impulses to send the sound or signal down the wire. Because it is metal strands and is using electrical signal to send the sounds down the wire it is susceptible to interference from radio waves, magnetic fields created by transformers (wall warts), microwaves, fluorescent lights, anything else in the room that has an electrical signal can potentially impact and muddy your sound going down the wire.

That being said, it is fairly well shielded and unless it is near strong electrical fields or noise producing environments it might be OK. If you have a choice, I would choose Optical cable. Less noise, less chance for interference, cleaner sound.

-BW

Which layer of OSI model determines the type of communication?

The OSI model is a general model for networking . It has seven layer in total and each layer have some responsibilities. The layer that determines the communication mode is physical layer.

What is unshielded twisted pair attenuation with distance?

Unshielded twisted pair (UTP) attenuation refers to the loss of signal strength as it travels over a length of cable. This attenuation increases with distance, typically measured in decibels (dB) per 100 meters. Factors such as cable quality, frequency of the signal, and environmental interference can affect the rate of attenuation. Generally, the longer the cable run, the greater the attenuation, which can lead to reduced data transmission quality and speed.

What is optical switching?

An optical switch is a switch that enables signals in circuits to be switched from one circuit to another.

What is the purpose of feasiblity analysis?

A feasibility analysis is a business process that helps companies decide whether or not to pursue a new business opportunity. There are several different parts to any analysis, but instead of going into the differences here, just check out the Wiki on it linked below: http://en.wikipedia.org/wiki/Feasibility_study

Is the processor Most important hardware components in file server?

In a file server the most important components would be the hard drive. You will want fast drives, preferably configured in RAID 5 or 6 to prevent data loss. You will also want a fast network uplink, such as gigabit ethernet if your network can support it. In general you wont need very much RAM or a super fast processor.