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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

Does an iphone have an IP address?

Yes, if you are using the internet you'll have an IP address.

Why is ollie a net nanny?

this is because he is not allowed to go on the internet because it was deemed to dangerous

What is an Ethernet controller?

ethernet controller is the device which deals with lan card means local area connection

How do you monitor activity of sockets?

A firewall is an integrated collection of security measures designed to prevent unauthorized electronic access to a networked computer system. It is also a device or set of devices configured to permit, deny, encrypt, decrypt, or proxy all computer traffic between different security domains based upon a set of rules and other criteria.

What network has high scalability?

Hello there,

Though the term "east-west networking" really focuses on the maelstrom of traffic inside the data center, it is also applicable to the traffic patterns occurring outside the data center as well. The advent of cloud and virtualization has made it such that integration of cloud-hosted resources is becoming more and more appealing, if not already a done deal. That means there's a lot more east-west networking between "data centers" - between the corporeal data center of the enterprise and the ethereal data center out there, in the cloud. To maintain the efficiencies and cost-savings gained by leveraging those cloud resources, such communications must occur, after all, lest organizations find themselves managing two completely separate processes and sets of policies governing the delivery of the applications they have deployed.

- noizyoyster.com

What is necessary when connecting a laser printer directly to a wired network?

That depends on the type of printer. Many modern printers have a built-in ethernet interface, and some of the newest offer WiFi or BlueTooth; you don't actually need to plug in in order to print.

For more common home laser printers, you'll need to either get a print spooler (which is sometimes built into your network switch or your gateway router) or connect to a host PC and then share the printer.

What do sockets do?

A socket is one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application that data is destined to be sent to. An endpoint is a combination of an IP address and a port number.

Explain how virtual address is converted into physical address?

A Microprocessor provides a memory address (within the address space of that micro, which is related to the number of address pins of the micro. For instance 32 pins can generate 4GB of addresses). In a system with DRAM modules, each DRAm chip contributes with only one bit to compose the word. Each bit has its own address, each DRAM chip has its own address within a module and each module has its own address within the memory system. A DRAM chip is composed by N matrices, so there are "matrix address", line address and column address. There are so many addresses and control signals, and the microprocessor knows nothing about them. Thus, the system must contain a memory controller which translates the address provided by the processor (some times called virtual) into fisical memory address. These translations are made by the hardware (only).

Another history is the virtual memory, where there is a mapping between the address provided by the processor and the address where the data is stored (part in ram and part on disk). The address space is broken in pages, and a mapping unit (which can use a cache like memory - TLB) mantain information about which page is on the disk and witch is on the RAM. This system is a combination of hardware and operating system. The precise explanation can be found in any operating system book.

Sorry by the English.

If you have the administrative rights on a domain why would you get an access denied error when you try to access the registry?

Depending on the Operating System, there are 'level' of administrative rights. You may have a level which allows many things like adding users, installing applications and such, but not deep enough access to alter system files, such as would happen in the registry. If you have an authentice reasone to use the registry, contact your lead admin and have them include you in the registry editors group (or whatever they call it at your work)

1 What devices are used in an ATM network?

An ATM network is made up of an ATM switch and ATM endpoints. An ATM switch is responsible for cell transit through an ATM network. The job of an ATM switch is well defined: it accepts the incoming cell from an ATM endpoint or another ATM switch. It then reads and updates the cell-header information and quickly switches the cell to an output interface toward its destination. An ATM endpoint (or end system) contains an ATM network interface adapter. Examples of ATM endpoints are workstations, routers, digital service units (DSUs), LAN switches, and video coder-decoders (CODECs). Figure 20-3 illustrates an ATM network made up of ATM switches and ATM endpoints. from Muhammad Faraz Ahmed

faraz_vu@hotmai.com

How many hosts and subnets are possible if you have an IP of 151.242.16.49 with a subnet mask of 7 bits?

151.242.16.49 would be class B in a classful environment with a network

mask of 16 bits. An additional 7 bit subnet mask puts the total mask at

23 (i.e.: 255.255.254).

Subnet ID would be: 151.242.16.0

Host address range: 151.242.16.1 through 151.242.17.254

Subnet Broadcast address would be: 151.242.17.255

What are the major steps necessary for implementing routing on a Linux network?

Answer:

NOTE: It is suspected that this question has been reproduced from an exam, quiz or test of some sort.

Step 1

The question is vague, but if you intend to use a Linux machine as a router you'll need multiple physical interfaces connected with your cat 5 or other cabling as well as all switches etc. set up and operating.

Step 2

Configure your connected ethernet interfaces (typically with ifconfig).

Step 3

Configure your routing table (typically with the route command or it's equivalent).

Step 4

Make any necessary changes to your routing host firewall (typically iptables or other).

Step 5

Enjoy the fruit of your labors.

NOTE: Much has intentionally be omitted from this answer because the question is too vague to justify a detailed response.

How are VLANs and subnets related?

Although VLANs and subnets are quite different concepts, when using VLANs, there should be a one-to-one correspondence between the two. That is, every VLAN should be in a different subnet.

Although VLANs and subnets are quite different concepts, when using VLANs, there should be a one-to-one correspondence between the two. That is, every VLAN should be in a different subnet.

Although VLANs and subnets are quite different concepts, when using VLANs, there should be a one-to-one correspondence between the two. That is, every VLAN should be in a different subnet.

Although VLANs and subnets are quite different concepts, when using VLANs, there should be a one-to-one correspondence between the two. That is, every VLAN should be in a different subnet.

Which networking command is most popularly used to test the connectivity of between systems and networks?

The ping command. Traceroute is also useful, but I would start by using the ping command.

The ping command. Traceroute is also useful, but I would start by using the ping command.

The ping command. Traceroute is also useful, but I would start by using the ping command.

The ping command. Traceroute is also useful, but I would start by using the ping command.

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