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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

Explain how microkernels can be used to organize an operating system in a client server fashion?

Since the micro kernel containing only the code that must execute in kernel mode, which like for setting device registers, switching the CPU between processes, manipulating the MMU, and capturing hardware interrupts. Then we can include a file server in program language (e.g. Java or C language). Both the client and the server need to share some definitions, for example, using the " #include <header.h> statement, which has the effect of causing a preprocessor to literally insert the entire contents of header.h into the source program just before the complier starts compiling the program.

What are fiber optic termination boxes?

Fiber optic terminal box generally refer to the box shape fiber optic management products used to protect and distribute the optical fiber links in FTTH Networks. Usually the fiber optic box includes the fiber optical patch panels and fiber optic terminal box. Fiber optic patch panel is bigger size, fiber optic termination box is smaller. Actually there are too many fiber optic boxes and fiber management devices, they are hard to count the types, many manufacturers will make the fiber optic boxes according to their own design and they may give the fiber optic boxes different names and model numbers.

What is a path to a file?

Files, on hard disks, are stored in different directories or folders. Folders can contain other folders. A path is the complete specification of disk and folders, required to reach the file. For example, in Windows, a filename, including its complete path, may look like this:

c:\My Documents\Personal Stuff\MyText.doc

Only the last part (MyText.doc) is the filename; the part before that is the path name.

Files, on hard disks, are stored in different directories or folders. Folders can contain other folders. A path is the complete specification of disk and folders, required to reach the file. For example, in Windows, a filename, including its complete path, may look like this:

c:\My Documents\Personal Stuff\MyText.doc

Only the last part (MyText.doc) is the filename; the part before that is the path name.

Files, on hard disks, are stored in different directories or folders. Folders can contain other folders. A path is the complete specification of disk and folders, required to reach the file. For example, in Windows, a filename, including its complete path, may look like this:

c:\My Documents\Personal Stuff\MyText.doc

Only the last part (MyText.doc) is the filename; the part before that is the path name.

Files, on hard disks, are stored in different directories or folders. Folders can contain other folders. A path is the complete specification of disk and folders, required to reach the file. For example, in Windows, a filename, including its complete path, may look like this:

c:\My Documents\Personal Stuff\MyText.doc

Only the last part (MyText.doc) is the filename; the part before that is the path name.

How are route policies applied in the core?

The core must be able to quickly forward data to other parts of the network.

What is the purpose of the default route?

it is where the router sends all packets with destination of which it has knowledge.

What network devices are needed to hook up 5 computers with no internet or email access?

Each computer needs a network card (NIC); you need a hub or switch; and for every computer you need a network cable to connect to the switch.

Which ip blocks are reserved for private networks?

IPv4 private addresses:

  • Class A addresses in the range 10.0.0.0 to 10.255.255.255
  • Class B addresses in the range 172.16.0.0 to 172.31.255.255
  • Class C addresses in the range 192.168.0.0 to 192.168.255.255

IPv6 private addresses:

  • All IPv6 addresses with the prefix FC00::/7 are regarded as private.

An internet fragmented datagram versus reassembly at the final destination?

What are the pros and cons of intermediate reassembly of an internet fragmented datagram versus reassembly at the final destination

What does unsecured network mean?

It means that no big effort has been expended to protect the network against intruders.

Network computer which is attached to a network is called a?

its just called a network enabled computer or server or a workgroup and this if it configured to work

What layer 2 Transmission Control Protocol?

TCP, the Transmission Control Protocol, is a layer-4 protocol (in the 7-layer OSI model).

What operates at the Network layer and manages multicasting?

The data link layer is responsible for the moving of the frames from one hop to another and the delivery of packets within the same network.But when there is the need to send the packets form one network to another then the network layer comes into play and with the help of logical addess being provided by the network later as well as with the help of routers or switches the packets are being reached to the desired destination.

Anand bhat(mca@kiit-870024)

or

IGMP

What is DDC 912 protocol?

DDC 912 is Diebold's communication protocol for messages between an electronic payment terminal (e.g. an ATM) and a Payment Switch Application (e.g. IST, Postillion, Baser24 etc. in a financial institute like Bank).

This is a proprietary protocol from Diebold Inc. and is also licensed to other ATM vendors to be used in a network where this protocol is in use.

How many IP addresses must you obtain from your ISP in order for all five clients in your office to be able to access servers on the Internet?

One - and it doesn't necessarily have to be a public IP address. Then you share this single IP address over the entire network, with NAT.

How many ip adderessess can be generated in ip version 4 and 5?

IP version 4 uses 32 bits (4 bytes) for addresses; in theory, this gives a total of 232 (or 2564) = 4,294,967,296 different addresses.

IP version 5 is some experimental version that never took off.

IP version 6 is supposed to be the next version of the Internet Protocol - eventually, it is likely that more and more people and companies start using IP version 6, when no more addresses can be obtained for IP version 4. This is expected to happen in about 2-3 years. For more details, see, for example, http://en.wikipedia.org/wiki/IPv4_address_exhaustion

IP version 6 uses 128 bits (16 bytes) for each address. This results in a total address space of about 3.4 x 1038 different addresses.

What is downward multiplexing?

Downward multiplexing refers to distributing a single signal across multiple channels.

What cable connect between two switches?

Two equipments of the same type - two computers, two routers, two switches - should be connected with a crossover cable.