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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

Can private IP address be routed?

No - a private address can be used many times so it can't be seen outside of the LAN with that address. It has to be translated into a public address to be routable.

How many IPv6 address are possible?

In theory there are 264 available network allocations in ipV6. It is not known how many are actually in use at this time.

For a very clear comparison, in IPv4 there is a total of 4,294,967,296 IP addresses. With IPv6, there is a total of 18,446,744,073,709,551,616 IP addresses in a single /64 allocation.

What is the command to connect to remote terminals in unix?

Under Windows the command is mstsc.

Microsoft terminal server connection

Are computer networking jobs in demand?

Yes certainly, it's a good option for Computer Science and Information Technology students.

A career in Computer Networking are for those who enjoy working with computers, solve technology-related problems, troubleshoot issues.

Technology has become the basic need of our day to day life. Professionals with experience in computer networking are best suited to handle the latest advancements in a fast-evolving industry.

More Computer Networking Career

Following are the computer-related specialties that involve networking skills are:

Computer Engineer

Computer-Operations Researcher

Web Master

Computer Programmer

Computer Repair Specialist

Database Administrator

Systems Analyst

How do you ping in MAC?

Generally no.

But if that mac address is currently contacting you, you can usually do a NETSTAT-A and see the mac address translation for each ip address. Then you'll know which IP address to ping.

If you have access to the router (Cisco) that routes for the computer's local

network, then look in the arp table to find the MAC address:

Command > sh arp | inc mac address [0000.0000.0000]

Return will be > : Internet 198.25.15.2 5 0000.0000.0000 ARPA FastEthernet0/0 or

whatever the ip address is and the mac address.

Minimum bytes in IPv4 header?

Minimal bytes required in IPv4 header are 20 i.e. 20 bytes are mandatory. And total bytes in IPv4 header are 60.

What is the difference between internal and external cache?

Internal cache is stored in a reserved area of the RAM of your computer. External cache is also called secondary cache or level 2 cache memory. It is external to the microprocessor and is stored on a separate chip.

What is the length of time an IP address is assigned to a switchport called?

Are you sure you mean switchport? IPs aren't assigned to a switchport. They can be assigned to switches. When an IP is assigned to a switch, it's permanent. They are also assigned to computers, usually by a DHCP server, which has a lease period, but that can be set to many different lengths.

What is the port number used for world wide web HTTP communication?

by default HTTP uses port 80. If encrypted (https) the http protocol by default is on port 443.

Hope this helps.

mo.

How are connectionless sockets different than connection-oriented sockets?

Connectionless sockets, such as those using the User Datagram Protocol (UDP), send data without establishing a connection, meaning there's no guarantee of delivery, order, or error-checking. In contrast, connection-oriented sockets, like those using the Transmission Control Protocol (TCP), establish a reliable connection before data transfer, ensuring that packets are delivered in order and without loss. This makes connection-oriented sockets suitable for applications requiring data integrity, while connectionless sockets are often used for applications where speed is prioritized over reliability.

What is a device for transmitting messages or signals to a distant place?

Telephone, cellphone, internet, etc.

Amateur or ham radio communications

Where does the USB go?

Into the USB port. It is a small rectangular hole located on the CPU. Usually on the back side.

How does a router processes a frame?

what does a router do after receiving a frame

How does TCP detect congestion?

It don't control congestion that is up to the routers and gateways as they are the ones that look at the traffic and figure out the best way to send something over the internet.

4 Give two reasons why network might use an error correcting code instead of error detection and retransmission?

1)Time taken to error correcting is less than doing detection and retransmission.

Bandwidth use will be less.

2) In detection and retransmission if back messaging occurs the bandwidth will be more

What PROVIDES wireless internet access to computer and mobile devices?

the internet can be wireless but all the stuff you want to connect it to has to have wifi and its transmitted by a wireless router

Crossword puzzle? A: wisp

Wireless network that provides Internet connections to mobile computers is a hot spot. Some charge for internet access or require you to subscribe to a Wisp.

Functions of encapsulation?

The ability to make changes in your code without breaking the code of all others who use your code is a key benefit of encapsulation. You should always hide implementation details. To elaborate, you must always have your variables as private and then have a set of public methods that others can use to access your variables. Since the methods are public anyone can access them, but since they are in your class you can ensure that the code works the way that is best for you. So in a situation that you want to alter your code, all you have to do is modify your methods. No one gets hurt because i am just using your method names in my code and the code inside your method doesnt bother me much.

If you want maintainability, flexibility, and extensibility (and I guess, you do), your design must include encapsulation. How do you do that?

• Keep instance variables protected (with an access modifier, mostly private).

• Make public accessor methods, and force calling code to use those methods rather than directly accessing the instance variable.

• For the methods, use the JavaBeans naming convention of set and get.

What are three features of IPv6?

IPv6 is just an extended version of the IP using 6 bytes instead of the 4 used since the ARPANET was first defined. It allows a significant expansion of the number of possible Internet nodes. Of course it requires a modified packet layout to make room for the extra 2 bytes in each IP and a backward compatibility to older devices that only understand 4 byte IPs.

Will a PC boot into bios without ram installed?

You cannot do so. The basic reason is Ram acts as a temporary storage device to store your operating system and other essentials. Where as hard disk is slower and cannot be used for same to process.

Can you use an 802.11n router with an 802.11g wireless card?

Yes. An 802.11n card should be backwards compatible with 802.11g/b. If you have a router that supports 802.11g, then the 802.11 card will work. But you are not gaining anything by using the n card with a g AP. The card will simply function as a 802.11g card.

Which three address ranges can be used to depict private IP addresses?

Three Private IP Address classes:

IP addresses Range

10.0.0.0 - 10.255.255.255

72.16.0.0 - 172.31.255.255

192.168.0.0 - 192.168.255.255