Information Technology Interview Questions And Answers
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Prepare comprehensively for your Information Technology interview with our extensive list of 180 questions. These questions will test your expertise and readiness for any Information Technology interview scenario. Ideal for candidates of all levels, this collection is a must-have for your study plan. Secure the free PDF to access all 180 questions and guarantee your preparation for your Information Technology interview. This guide is crucial for enhancing your readiness and self-assurance.
180 Information Technology Questions and Answers:
Information Technology Job Interview Questions Table of Contents:
1 :: In which decade was the SPICE simulator introduced?
C. 1970s
SPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.
Read MoreSPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.
2 :: Most modern TV's draw power even if turned off. The circuit the power is used in does what function?
Remote control.
Some authorities are recommending TV's, VCR's and Stereo's be connected to power strips with switches and turned off when not in use to save energy. Your remote will not work until power is switched back on.
Read MoreSome authorities are recommending TV's, VCR's and Stereo's be connected to power strips with switches and turned off when not in use to save energy. Your remote will not work until power is switched back on.
3 :: Which is a type of Electrically-Erasable Programmable Read-Only Memory?
Flash.
It's commonly used for MP3 players, computer BIOS code and "thumb" drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.
Read MoreIt's commonly used for MP3 players, computer BIOS code and "thumb" drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.
6 :: Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial intelligence?
Alan Turing.
Read More8 :: Made from a variety of materials, such as carbon, which inhibits the flow of current...?
Resistor.
So named because it resists (or inhibits) the flow of current.
Read MoreSo named because it resists (or inhibits) the flow of current.
9 :: The most common format for a home video recorder is VHS. VHS stands for?
Video Home System.
JVC (Japan Victor Corporation) and Matsushita (Panasonic) developed the VHS format to compete with Sony which developed the Beta format as the first home video cassette recorder. VHS originally stood for Vertical Helical Scan, but now means Video Home System.
Read MoreJVC (Japan Victor Corporation) and Matsushita (Panasonic) developed the VHS format to compete with Sony which developed the Beta format as the first home video cassette recorder. VHS originally stood for Vertical Helical Scan, but now means Video Home System.
10 :: What does VVVF stand for?
Variable Voltage Variable Frequency.
It is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.
Read MoreIt is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.
11 :: In which decade was the American Institute of Electrical Engineers (AIEE) founded?
1880s.
The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
Read MoreThe IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
12 :: In which decade with the first transatlantic radio broadcast occur?
1900s.
On December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.
Read MoreOn December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.
13 :: What frequency range is the High Frequency band?
3 to 30 MHz.
The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.
Read MoreThe HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.
14 :: What is the first step to getting output from a laser is to excite an active medium. What is this process called?
Pumping.
A collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.
Read MoreA collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.
15 :: Which motor is NOT suitable for use as a DC machine?
Squirrel cage motor.
The squirrel cage motor is the only one without any connection to the armature.
Read MoreThe squirrel cage motor is the only one without any connection to the armature.
20 :: A given signal's second harmonic is twice the given signal's __________ frequency...?
Fundamental.
A given signal's second harmonic is twice the given signal's fundamental frequency. Harmonics are generated when there are non-linearities in an amplifier (there are always non-linearities). The worse the non-linearities, the more harmonics. A signal at 27.5 MHz (approximate frequency for US citizen's band) would have a second harmonic at 55.0 MHz (on US channel 2!). Can you see why there might be problems? A CB operator might do well to place a low-pass filter on his radio.
Read MoreA given signal's second harmonic is twice the given signal's fundamental frequency. Harmonics are generated when there are non-linearities in an amplifier (there are always non-linearities). The worse the non-linearities, the more harmonics. A signal at 27.5 MHz (approximate frequency for US citizen's band) would have a second harmonic at 55.0 MHz (on US channel 2!). Can you see why there might be problems? A CB operator might do well to place a low-pass filter on his radio.
21 :: What does the term PLC stand for?
Programmable Logic Controller.
Used in manufacturing, engineering, and process operations.
Read MoreUsed in manufacturing, engineering, and process operations.
23 :: When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
Figure.
"Noise figure" is one critical parameter for determining the "quality" of a low-noise, small-signal, amplifier, and perhaps more importantly, the sensitivity of the overall receiver system. It is especially important for VHF (very high frequency) - and higher frequency - designs where most of the undesired "noise" (noise that masks or overpowers the desired signals) is generated internal to the electronics itself. In HF (high frequency) applications, atmospheric noise plays a much larger role in determining overall useful sensitivity, so a circuit's "noise figure" is less important.
Read More"Noise figure" is one critical parameter for determining the "quality" of a low-noise, small-signal, amplifier, and perhaps more importantly, the sensitivity of the overall receiver system. It is especially important for VHF (very high frequency) - and higher frequency - designs where most of the undesired "noise" (noise that masks or overpowers the desired signals) is generated internal to the electronics itself. In HF (high frequency) applications, atmospheric noise plays a much larger role in determining overall useful sensitivity, so a circuit's "noise figure" is less important.