0
Computer Terminology
Questions and answers about different terms related to computers, as well as computer language that is popularly used today.
11,612 Questions
Is processor speed measured in GHz?
yes it is,
the term hertz represents repetitions per second, ie, a 3000 hertz processor makes 3000 calculations per second. the term hertz also refers to anything that follows a cycle a computer screen refreshes at about 70 hertz, or updates what you see 70 times a second
Absolutely false on both accounts!To answer the above question, "Is speed of CPU is measured in hertz?" - the answer is NO! The performance of a CPU is approximated by a multitude of different criteria including specific testing programs depending on what functionality of the CPU specifically needs to be tested and measured. This overall performance can widely vary depending on the testing program, all supporting hardware and the preconditions of the testing environment.Regarding the original answer, these are all too common misconceptions these days! Unfortunately, you'll see ill advised reference to this throughout the periodicals, both on-line and off and even the marketing departments that desire to make the technical "jargon" more palatable - but not necessarily accurate.
The metric of "speed," which involves physical movement, has absolutely NOTHING to do with frequency measured in hertz. The two are NOT the same thing and are not interchangeable. A high school or college physics class will also prove this. You certainly don't get in your vehicle look at the speedometer and read 750 MHz or 3 GHz. Conversely, I've yet to see an actual laptop or desktop personal computer get up and physically move around the room or the house! It even seems silly!
How about some on-line proof? Check out the definitions on Wikipedia and elsewhere as cited below:
http://en.wikipedia.org/wiki/Speed
(Notice that nothing is stated about computing)
vs.
http://en.wikipedia.org/wiki/Hertz
http://en.wikipedia.org/wiki/Clock_rate
http://en.wikipedia.org/wiki/Frequency
Also reference the following:
Megahertz, for example, is defined as MHz, kilohertz as kHz and hertz as Hz. It is, in fact, ALWAYS a capital "H" to pay homage to the German Physicist Mr. Heinrich Hertz. Consider:
http://www.ideafinder.com/history/inventors/hertz.htm
or,
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci214263,00.HTML
(Scroll down and notice the table) or,
http://tf.nist.gov/timefreq/general/glossary.htm
(Click on "M" or "J-K" - these folks should know the difference)
Want further proof? Take a look at, www.fcc.gov and note their frequency references. In addition, simply take a look at a stereo dial, clock radio or even your transistor radio and notice how the manufacturers abbreviate frequency. Notice that this has NOTHING to do with "speed." You don't tune your radio to a different "speed" nor do you head down the highway at 2 kHz or 3.2 GHz.Obviously, they're not interchangeable! The point is they're entirely different metrics.
In addition, the above claim that "a 3000 hertz processor makes 3000 calculations per second" is also false. Different processor manufacturers such as AMD, Cyrix(former), NEC, TI, Intel and others manipulate various calculations and instruction throughput differently. Depending on what specific instruction is being executed in the processor, it may take from a few cycles to several processor cycles to finish the execution of any particular instruction. Meaning, it is NOT a one-to-one ratio in relation to the clock rate! In other words, a 3 GHz microprocessor does NOT execute 3 Billion instructions (or calculations) per second!
It was created by a standards body (many people contributing).
See the related link below.
How do you explain the reason for your answer?
In order to explain an answer, there must first be an answer to explain. In order for there to be an answer there must first be a question.
In everyday life, however, the answer to most questions is usally 7; thus requiring no futher explanation.
Why the tag is also stored in the cache?
The short answer is for speed. There is no point in storing data in a cache if there is no way to index the data to make it usable. Nor would there be any advantage if this data were stored in conventional DRAM.
You can see it when it is a CD, but a software in computers is stored in Hard drives and you can only notice it when running, by looking at your monitor.
What are the three examples in which raw data also serve as useful information?
It can be bank passbook, entering hospital & finance department of a company.
Difference between twisted pair cables and fibre optic cables?
1. Unless you go to proprietory fibre, both can go to 1000Mb/s, so neither has a great speed advantate.
2. Wired is much cheaper. It's not the fibre that's expensive, but the terminations and the adapters.
3. Fibre can do much longer distances. Basic multimode 500 m. Monomode many kilometres. In theory wired is limited to 100 m. In practice you can get reliable connection at 100 Mb/s with up to 200 m. For 1000 MB/s, about 150m is the norm.
4. Fibre requires no electrical connection. So there are no problems about the earth potential being different in different buildings. In many practical situations, this isn't a major problem.
5. Lightening strikes on the ground can, in theory, damage switches connected with cables. In practice, over 8 years of plenty of lightening storms connecting separated buildings in a school site of 5 acres we have had no lightening problems.
In fact, your question doens't make sense. MBPS is megabytes per second. This is the transfer speek, in case of copying of files / downloading files. Remeber 1024 KB = 1 MB ; 1024 MB = 1 GB ; 1024 GB = 1 TB Regards, Akshit Soota (akshitsoota@yahoo.com)
There are 1000MB in 1GB, therefore, there 100MB is .10GB or in other words, there is .10 (one tenth) of a GB in 100MB.
there are 0.1 GB in 100 MB
This is not fully correct.
There is not 1000MB in 1 GB.
There is however 1024 megabytes in one GB.
100 / 1024 = .09765625
Answer is .09765625 GB
What is the network topology that sends data in one direction only?
With all network topologies there is the ability to send data either way, e.g. uploading and downloading.
There are five different meanings of the acronym PXE. The five definitions of PXE are Preboot Execution Environment, Pseudoxanthoma Elasticum, Partial XML Envelope, Proof & Experimental Establishment, and Post Exercise Evaluation.
Go the website www.onlineconversons.com. This is a program that will convert any type of measurement you can think off to include KB, MB and GB. By the way the answer is 1552MB=1.4GB. No one is going to ask you to do something like that in your head. However, you are suppose to know the value of bits, byte, kilobyes, megabytes, gigabytes and now teraytes. This information comes in handy when you are talking or trying to buy a computer to know how much you are getting.
How many gega byte in one yottabyte?
1,000 zettabytes
1,000,000 exabytes
1,000,000,000 terabytes
1,000,000,000 gigabytes
1,000,000,000,000 megabytes
1,000,000,000,000,000 kilobytes
Arrange these units in order from smallest to largest kilobyte gigabyte megabyte?
bit byte kilobyte megabyte gigabyte terabyte
What is the difference between contemporary computer science and traditional computer science?
the contemporary computer science focused more on dealing with the scalable information. For example: how to retrieve the information(google,yahoo), how to mining the information(ERP, data mining techonogy).
whereas, the traditional computer science pay more attention to the performance of the computer. For example, how to enlarge the memory capacity, how to make the computer smaller
What is different between OMR and OCR state with example?
OCR recognises letters, numerals, punctuation, and related communication symbols. Its main use is for getting printed text into a form that can be manipulated by a word processor or similar computer program.
OMR recognises the presence or absence of marks in pre-determined positions on a sheet of paper. It is what is used for automatically marking multiple choice exams, collating results from surveys and census etc.
What is the difference between internet service poviders and online service providers?
ISP (Internet Service Provider) === Internet Service Providers provide internet access to customers and many also offer web site hosting and email services.
Online Service Providers provides services through the internet. You usually need internet to access them.
However, "online service provider" could simply mean you can dial into their service ("online") and it has no connection at all to the internet, which is the way most companies operated private data networks prior to the early 1990s, such as America Online, Prodigy, Telenet, etc.
A computer connected to a server is what?
when a computer is connected to a server it takes all the services from that server and acts as a client.
What is a monolithic kernel and a microkernel?
The kernel is the heart of an operating system.
The kernel internally contains many components, such as a memory manager, scheduler, numerous device drivers, a file system, and so on. When an operating system is being written, there are numerous design philosophies which the designers can adopt. At one extreme is the monolithic kernel, in which all of the components mentioned above, and many others, are all lumped into a single operating system file. At the other extreme is the microkernel, where only the bare minimum is put into the kernel file, and every thing else is put into separate programs, which the microkernel loads and runs at boot time.
In practice, the design of most operating systems lies somewhere in between those two extremes, although they generally tend to be closer to a monolithic kernel than a microkernel. But, like everything else in life, the microkernel has its true believers.
Other Answer:
In monolithic operating system all services are provided in the operating system kernel itself. In my own understanding, monolithic operating system is one big program. Being 'one big program' all the services are associated with one another. This is prone to system crashes, because, if one particular function fails, the entire system will be brought to halt. In regards to resource management, it is difficult for the programmer to debug or implement the system. The only advantages of being monolithic are it deals with resource management rapidly. An example of a monolithic operating system will be the UNIX and MS-DOS. In microkernel operating system, processes are divided and stored in a different server. This key concept of the microkernel operating system is to keep the OS kernel small with basic and minimum process. Other services are stored in a different server. They communicate, via a communication channel
What is network neighbourhood?
Network Neighborhood is the Microsoft Windows name for a way/method to browse the Local Area Network. Network Neightborhood has now become My Network Places in Windows XP. The function remains the same.
What is the full meaning of PC?
The most common usage of PC is personal computer or politically correct.
