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Computer Interview Questions Answers

Computer Interview Questions Answers

Question - 71 : - whis is the first Intel processor introduced?

Answer - 71 : - The Intel 4004, introduced in 1970, was the first processor introduced by Intel.

Question - 72 : - What is the difference between analog and digital technology?

Answer - 72 : - Computers are digital devices, meaning they perform all calculations using ones and zeros. This method of computing is referred to as the "binary system," and is the heart of all digital technology. Devices such as hard drives, CD recorders, and Mini DV camcorders are digital devices, and therefore record data digitally, as ones and zeros. VCRs, tape players, and record players, on the other hand, are analog devices. This is because they record data linearly from one point to another. Imagine a bumpy line moving from left to right -- that is what an analog audio recording would look like. Analog devices read the media, such as tapes or records, by scanning the physical data off the media. For example, a record player reads the bumps and dips in the grooves of the record and translates the information into an audio signal. An audio CD player, however, reads ones and zeros off a compact disc and translates that information into an audio signal. However, the ones and zeros only estimate the actual soundwave, whereas a record player records the exact sound. When you hear terms like "sampling rate" or "bit rate," these refer to how many times per second the digital signal is sampled. The higher the number, the more accurate the estimate is, which translates into higher quality sound or video. So why is digital technology used if analog provides a better representation of the recorded information? Well, since computers perform digital computations, they can only work with digital media. Therefore, all analog audio or video media must be converted to digital to work on a computer. Once the information is digital, computers can be used to edit the data and create effects that were never possible with analog media. Digital media is non-linear, which means it can be edited or played back starting at any point, which can be a huge timesaver compared to working with tape. Digital information also does not "wear out" after repeated use like tapes or records do, which results in much better longevity for digital media. To summarize, a digital signal is an estimation of analog data. Digital recordings are made with ones and zeros, while analog recordings are made with linear bumps and dips. While digital information is not as exact as analog information, it can be used with ot

Question - 73 : - What is context root ?  

Answer - 73 : - A name that gets mapped to the document root of a Web application.  

Question - 74 : - What are the other (competing or not) wireless technologies   ?

Answer - 74 : - Wi-Fi, IrDa, EDGE, UWB (Ultra Wide Band)

Question - 75 : - What is CORBA ?

Answer - 75 : - Common Object Request Broker Architecture. A language-independent distributed object model specified by the OMG.

Question - 76 : - Which of the below versions of Windows was the first to be released after Windows 98?

Answer - 76 : - Windows 98 was released in June of 1998, a few years later Microsoft Windows 2000 was released in February 2000. Although this was the answer to this months quiz there were other versions of Windows released after Windows 98 including: Windows 98 SE, Windows CE 2.1 and 3.0. See our Windows history page for a history timeline of Microsoft Windows.

Question - 77 : - Where are the device drivers settings for Microsoft Windows stored?

Answer - 77 : - Drivers and many of the other settings in Microsoft Windows 95 and higher are stored in the Windows registry.

Question - 78 : - How does one create a new database? (for DBA)

Answer - 78 : - One can create and modify Oracle databases using the Oracle "dbca" (Database Configuration Assistant) utility. The dbca utility is located in the $ORACLE_HOME/bin directory. The Oracle Universal Installer (oui) normally starts it after installing the database server software. One can also create databases manually using scripts. This option, however, is falling out of fashion, as it is quite involved and error prone. Look at this example for creating and Oracle 9i database: CONNECT SYS AS SYSDBA ALTER SYSTEM SET DB_CREATE_FILE_DEST='/u01/oradata/'; ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_1='/u02/oradata/'; ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_2='/u03/oradata/'; CREATE DATABASE;

Question - 79 : - What does scalable mean, in reference to a computer?

Answer - 79 : - Scalable is synonymous with expandable. A computer with a scalable architecture is able to be upgraded easily and for a long time. When buying network equipment, it is especially important that it is scalable so that it can work with the newer systems that may be added on later. The less scalable your equipment is, the sooner you'll be forced to upgrade.

Question - 80 : - What are some of the main reasons why my computer is slowing down?

Answer - 80 : - Nobody wants to buy a fast computer just to have it slow to a crawl over time. If your computer is not performing like it used to, there are a number of causes that could be causing the sluggish performance. Here are a few: A nearly full hard drive. If your hard drive is almost completely full, it is likely many of your files are fragmented. This is because as the hard drive fills up, there are fewer open blocks of space to write additional files to. The result is that new files get written on different sections of the drive (file fragmentation). Your computer takes longer to read fragmented files, since it has to scan more of the hard drive. This can cause your computer to slow down significantly. Solution: Delete unnecessary files and run a file defragmentation/optimization program such as Norton Speed Disk. Spyware and viruses. If you're using Windows, there is a high probability that your operating system has been infected by various spyware programs or viruses. These programs run discreetly within your system, taking up CPU and memory, slowing your computer down. They usually find their way into your computer through your Internet connection and are often hard to detect. Viruses and spyware can cause anything from a small drop in your computer's performance to bringing your machine to grinding halt. Solution: Use Windows Update to download the latest security updates and install at least one antivirus program and antispyware program to find and remove malicious files. Low memory (RAM). Everything that happens on your PC has to go through the computer's memory at some point. So if you don't have a lot of RAM, it may cause bottleneck when your computer needs to move a lot of information at once. Typically, newer software programs require more RAM than older programs, since they often have more features and better graphics capabilities. If your computer could run old programs well, but is having trouble running new programs, upgrading your memory is the first thing you should do. It's relatively inexpensive and can breath new life into your machine. Solution: Add more RAM to your computer. Make sure you get the correct type of memory for your machine -- check the size, type, number of pins, and speed of the RAM. If none of these solutions seem to help boost your computer's performance, you may have

Computer Contributors

Rajeev Katiyar
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