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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
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What is a computer power surge?
When the voltage from the wall is many times higher than normal. Like if lightning were to hit the power line outside your computer would not see 120 volts, it would be more like 2000-5000+ volts.
What is a peer-reviewed journal?
It means that the journal/article has been reviewed by a panel of experts on that particular subject.
It depends on the book, but is usually known as the extended network prefix.
The physical layer of the OSI model is responsible for encoding frames in to the electronic/RF/optical signals of the physical medium and for reading the media and translating back in to usable frames.
What do you call the discrete chunks of data that networks transmit?
All the data that a network transmits in chunks is called packets.
A packetis one unit of binary data capable of being routed through a computer network. To improve communication performance and reliability, each message sent between two network devices is often subdivided into packets by the underlying hardware and software.
What are the three common wavelengths associated with fiber optic cable?
The three common wavelengths are 850 nanometers, 1300 nanometers and 1550 nanometers.
You can find it in the book, Networking Fundamentals second edition by Richard M.Roberts page 124 first sentence.
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What are the answers for Network plus Guide to Networks Fifth Edition Chapter 5 case project 5-1?
This is a known homework question for courses entitled Networking Fundamentals; if you are taking the class you should know how to structure the answer. If not, ask your instructor for a suggested answer. The Fifth Edition authors have 'an' answer, but it is not always the 'only' answer.
All the computers in the lab are running on TCP/IP not token ring. Token ring directs links between nodes and a ring topology, using tokens to allow nodes to transmit data. TCP/IP provides the foundation for data exchange across the internet.
fiber
How logical address is mapped to physical address?
In the 8086/8088, the logical address (or effective address) is mapped to a physical address by adding it to the left shifted by 4 value of a segment register.
For example, is the logical address is 1234H, and the segment register's contents is 5678H, the physical address is 1234H + 56780H, or 579B4H.
What is the function of the transport layer and which protocol reside there?
Briefly discuss the functions of transport layer.
it uses the time-to-live (TTL) field.
From the command line prompt, type "PING 127.0.0.1" (current IP address) and press ENTER From the commFrom the command line prompt, type "PING 127.0.0.1" (current IP address) and press ENTER and line prompt, type "PING 127.0.0.1" (current IP address) and press ENTER
What is the motivation behind using a custom subnet mask versus the default subnet mask?
A default subnet mask gives you classful addressing on octet boundaries. A non-default subnet mask implies that you are subnetting a larger network into several smaller ones.
What is the maximum distance permitted between straps on a cable insulation?
Depending on the region and if its commercial or residential its 6 to 9 inches.
Difference between layer2 and layer3 switch?
A network device that forwards traffic based on layer 3 information at very high speeds. Traditionally, routers, which inspect layer 3, were considerably slower than layer 2 switches. In order to increase routing speeds, many "cut-through" techniques were used, which perform an "inspect the first packet at layer 3 and send the rest at layer 2" type of processing. Ipsilon's IP Switch and Cabletron's SecureFast switches were pioneers in cut-through switching.
Confidentiality level
What is the difference between data transmission speed and propagation speed?
Data Transmission speed is the number of bits per second that can be transmitted.
Propagation speed is the speed at which a signal moves through a medium.
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