Which of the following commands allows you to make a directory?
While working with MS-DOS, which command is used to specify the colour display, 40 columns and color?
Which DOS command allows you to compress existing disks and to create new compressed volumes?
The MODE command of MS-DOS is used to
Which of the following applies to external DOS commands?
Which command is used to delete the directory that is empty?
Which command will be used to display file and directory names only, without size, date, and time information?
To organize files on a disk, MS-DOS separates them into areas called _____
The _____ command allows you to modify the default prompt to provide other information
What DOS program can you run to see which serial ports are detected?
Which of the following commands will take you directly to the root directory no matter what subdirectory you are currently in?
Which command of MS-DOS is used to copy only files that have been modified on or after the date you specify?
Which DOS command will format a floppy disk and transfer the system files
While working with MS-DOS, which command is used to restore files that were backed up using the BACKUP command?
The term TSR is an abbreviation for:
Using the _____ switch causes FDISK to display the partition status of your hard disk without executing FDISK.
While working with MS-DOS, which command is used to specify the size of the disk to format.
While working with MS-DOS, which command is used to force DOS to recheck all clusters when reformatting a disk?
The _____ switch instructs DOS to display the directory list in a wide format.
Which of the following applies to Internal DOS commands?
Match the device driver HIMEM.SYS to its operation
What command can you add to the AUTOEXEC.BAT file so that your computer temporarily stops in the execution of the file before continuing?
While working with MS-DOS, which command is used to sort the file in ascending order?
What is the order in which Command.Com searches for programs to execute?
While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?
Which command is executed before the others when a computer is first turned on?
Where do you load the CD Rom drivers?
Which best describes a fragmented hard drive?
Which of the following represents a correct sequence for the boot process on a DOS machine?
When you create a subdirectory within a directory, the process is known as _____
The COPY command of MS-DOS, is used to:
Which of the following filename extension suggests that the file is a backup copy of another file?
While working with MS-DOS, which command is used to compare the disk in drive A with the disk in drive B, specifying to compare only first side of each disk, and only the first 8 sectors of each track?
While working with MS-DOS, which command will you use to display the version?
What type of commands are individual programs kept, as separate files on the hard disk (DOS diskette)?
In DOS, what key would you press to step through the Config.sys and Autoexec.bat?
Which command is used to delete the directory and all its contents in one step?
Which internal DOS command clears the screen and places the DOS prompt in the upper left corner of the screen?
After searching the current directory where does command.com search next?
Which command is used to send the contents of file named REPORT/TXT to the standard printing device?
HIMEM.SYS controls:
Where would you load the mouse driver mouse.sys?
Filename extensions help identify certain files. What filename extension identifies command files?
Which DOS command will configure a serial printing port?
Which command below will instruct DOS to do a "quick format".
While working with MS-DOS, which command is used to display a list of deleted files that DOS can undelete?
Which file executes commands in DOS?
What switch would you use to view Smartdrive statistics?
Each time you turn the power switch on, which control files will the computer check?
Which two of the following DOS commands are used to display or set the date and time of your computer's infernal clock?
When MS-DOS formats a disk, it automatically creates the main directory on your disk, which is called the _____ directory.
Which command will prevent subsequent changes to the file CBT.EXE?
Which command will be used to display a column file compression ratio for each file of Double spaced disk?
While working with MS-DOS, which command is used to copy all files from the currently logged drive and directory with the extension .TXT to the drive A?
Which command of DOS is used to compare two floppy disks?
Which command of DOS is used to sort the file in reverse order?
Which DOS command would allow you to redirect a printer?
DOS uses letters of the alphabet to designate disk drives. How many disk drives can DOS address (recognize)?
The PATH command is usually found as part of your _____ file.
Which command is used to display the subdirectory structure of the currently logged drive and pause the screen display after each screenful of information?
If you do not know the current time, which command will you use to display the time?
Filename extensions help identify certain files. What filename extension identifies executable files?
Which combination of keys allows you to perform a warm boot?
You suspect that your automatic modem dialer is not working correctly. Which of the following commands will manually dial the number 123-4567?
Which command is used to copy all files from drive A with extension .TXT to the currently logged drive and directory?
While working with MS-DOS, which command is used to switch to the monochrome display from color display?
Which two commands enable you to move between directories?
The autoexec.bat configuration file
Which DOS command is used to remove and scan memory and disk from viruses?
To conserve battery power on your laptop computer. What DOS v6.x command should you use?
The Fdisk command in DOS _____ .
How would you allow device drivers and TSR's to be loaded into Upper Memory Blocks?
While working with MS-DOS, which command is used to restore only those files modified since the last backup, from the drive A to the currently logged drive or directory?
How many buses are connected as part of the 8085 microprocessor?
Which of the following is not a computer bus?
The technique of assigning a memory address to each I/O device in the SAM system is called:
How many bits are used in the data bus?
A port can be:
Which of the following is not a basic element within the microprocessor?
How many bits are used in the address bus?
Exceptions to the 8085 microprocessor normal operation are called:
When referring to instruction words, a mnemonic is:
What is the difference between mnemonic codes and machine codes?
Which bus is bidirectional?
The software used to drive microprocessor-based systems is called:
A microprocessor unit, a memory unit, and an input/output unit form a:
A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding?
Which one of the following statements is true for the currents in a parallel RC circuit?
Which one of the following statements is true for current flowing in a series circuit?
The total inductance of a series inductor circuit is:
When the graph of current versus voltage is a straight line, the device is referred to as
For a pure capacitor:
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:
In a pure inductor:
Waveforms are graphs that show:
When the collector current increases, what does the current gain do?
How many types of flow are there in a semiconductor?
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?
What form of energy is used to maintain an imbalance of charges between the terminals of a battery?
Which one of the following statements best applies to a parallel RLC circuit?
The equivalent of 1 micro A is:
Which one of the following statements best describes magnetic hysteresis?
Which one of the following phrases best describes residual magnetism?
A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?
Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?
Which one of the following phrases most accurately describes a purely inductive circuit?
The knee voltage of a diode is approximately equal to the
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?
The rms value of a sine waveform is:
Which one of the following is a direct statement of Ohm's law?
A high-pass filter:
Which one of the following statements is true for the voltages in a series RC circuit?
A battery is a device composed of one or more:
Doubling the operating voltage of a purely capacitive circuit:
How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?
What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm
Molecule is
What form of energy is used for creating static electricity?
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?
A dielectric material is:
A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?
If a load resistance is 1 kW, a stiff current source has a resistance of
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?
The number of free electrons and holes in intrinsic semiconductor increases when the temperature
Which one of the following statements is true for current flowing in a parallel circuit?
Holes are the minority carriers in which type of semiconductor?
Doubling the number of turns of wire in an inductor:
A farad is defined as the amount of capacitance necessary for:
What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?
In an intrinsic semiconductor, the number of free electrons
A device that converts mechanical into electrical energy is?
Which one of the following kinds of materials has the lowest permeability?
The total impedance of a parallel RLC circuit:
The rise time of a pulse waveform is the time required for the voltage to rise:
Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance?
The equivalent of 1 megohms is:
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?
If the current gain is 200 and the collector current is 100 mA, the base current is
What is a negative ion?
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point
Voltage is
What is the turns ratio for the transformer specified in the above question?
The total impedance of a series RLC circuit:
The direction of electron current flow is:
A device that converts mechanical pressure to electrical energy is called a:
Which one of the following statements is true for the voltage in a parallel RC circuit?
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