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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
What are the advantages of first generation of computers?
They were better than a large room of hundreds of human computers, each with a mechanical desk calculator trying to solve the same problems. Seriously! In the 1930s and 1940s, aircraft manufactures designing new airplanes and insurance companies computing actuarial tables used to set policy rates did exactly this. Their problems did not fit well on then available unit record electromechanical punch card machines and were too big for one man to solve. Such companies grabbed up the first generation electronic digital computers of the 1950s as fast as they came out.
What layers of the OSI model does the NIC operate?
The NIC operates on Layer 2 (Data Link Layer) of the OSI Model.
What layer of OSI model does a router operate?
Router is a Layer 3 (Network Layer)device that checks packet's IP Address at input interface & routes them to interface connected to destination network if available.
Was the Internet used in 1965?
The Internet as we now know it did not exist in 1965. However, the foundations of the Internet were being designed and used about that time. It started out as a government program known as ARPANET and was created by ARPA - Advanced Research Projects Agency, which later became DARPA - Defense Advanced Research Projects Agency. Read more about this at the site linked to the right -->
What are the four classification of computers?
- MAINFRAME COMPUTER
- MINI-COMPUTER
- MICRO-COMPUTER
- SUPER-COMPUTER
There are many computers which are different from each other in various aspects. Classification of computers are given below.
(1) Micro computers: These computers use a microprocessor chip and this chip is used instead of CPU means that this microprocessor chip works as a CPU.
These computers are also called personal computers. Two major types of these computers are laptop or Desktop computers. Only one user uses these computers at time that's why they are also known as personal computers.
(2) Mini Computers: These are powerful computer. These computers come into existence in 1960s at that time mainframe computer was very costly. Mini computers were available in cheap prices, so users start using it.
(3) Mainframe Computer: It as a very powerful and large computer. You can get idea of its power as it can handle processing of many users at a time.
Terminals are used to connect a user to this computer and users submit there task through mainframe. Terminal is a device which has keyboard and a screen. By using terminal users put inputs into the computer and get the output through screen.
(4) Super Computers: As the name "super computer" specifies that these are most powerful computers even than mainframe. Actually, when we optimize a mainframe computer then we get super computer.
(5) Microprocessor: You will find these computers everywhere. Microprocessor chips are used in many devices as I-pod, DVD, headphone etc.
It's a response to a broadcast asking for the devices MAC ID. Routers and switches keep a table known as an ARP table which lists all the MAC ID's in the local area network. It will send ARP requests out to all the nodes in it's broadcast domain saying send me your MAC ID's. All the nodes in the network reply back with an ARP reply saying here is my MAC ID.
What are the advantages of writing directly on a computer?
If you write directly on a computer, you have all the formatting and editing tools that come with a word processor right at your fingertips.
Conversely, if you write on paper, then in order to edit, publish, or format your work, you'll have to enter it into the computer by hand. However, there are authors who still prefer to write by hand despite this inconvenience because of the natural feel of pen and paper.
ARPA is an acronym that means Advanced Research Projects Agency. This is a term used by Cisco making reference to the Ethernet.
Who is the father of computer scanner?
The first image scanner developed for use with a computer was a drum scanner. It was built in 1957 at the US National Bureau of Standards by a team led by Russell A. Kirsch
What is another name for an Ethernet cable?
another name for an ethernet cable is a cat5 or cat5e cable
What infrastructure must be present in destination to host international event?
The infrastructure that must be presented are 1) Transportation, 2) Telecommunications, 3) Energy Infrastructure, and the likes.
The word “exam” is the short version of “examination.” Given the current use of the word, this could mean A. A(n) quiz/test given by a teacher to test the abilities of a student
B. A physical test of bodily functions working properly
C. A yearly examination done by your doctor(s) yearly.
What are the disadvantages of the pre-1996 network?
What were the disadvantage of the pre 1996 network
What is a 1934 computer port for?
a 1934 port is actually a firewire port, that can be used for high speed data transfers
What destination IP address will PC1 place in the header for a packet destined for PC2?
A data packet is split into three parts: The header, the payload and the trailer.
The header contains the basic instructions about the data packet which should include:
The packet length
Synchronization (a few check bits to match up to the network)
Originating IP Address (i.e. PC 1)
Destination IP Address (i.e. PC 2)
Protocol
Packet number
The payload is the main body of data that is being sent. The size of the data can be a fixed length or a variable amount. If it is a fixed length, then this can be padded with blank data, so that each packet remains the same size.
The trailer or footer contains data that tells the destination computer that it has reached the end of the packet. The trailer may also contain error checking information. This will tell the receiving computer to tell the originating source that the information was received.
What is the current and voltage in submarine optical fiber cables?
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- computer
- network interface cords
- switch
- router
- modem
- gateway
- communication media
- hub
- network operating system
How do you rebot your computer?
Press and HOLD the buttons: Ctrl, Alt, Del, twice,
or click the start button and follow to the "Restart" symbol
Remote access connection manager?
Remote Access Connection Manager is a Windows service used to control access to the Internet and other remote networks. Remote Access Connection Manager can be started or stopped using the services.msc tool.
