CPT 104 Midterm

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Why is a hard drive with a higher spin rate usually faster?

It reduces the seek time.

What is the result of adding the following 2 binary numbers? 00100100 + 00010100

0111000

If you need to change the PATH variable

Right click on Computer, click on Advanced, and click on the Environment Variables button

data

The raw facts and numbers that are input for a computer

What does the very first bit of an IEEE single-precision floating point number tell you?Actions for What does the very first bit of an IEEE single-precision floating point number tell you

The sign of the whole number

information

The usable output from a computer

8, 10 and Server 2008 are all versions of

Windows

A file with a .zip extension is

a compressed file, which contains other files

UNIX is

a family of similar operating systems

Which of the following is not an output device?

a microphone

A place to plug a device into a system unit is known as

a port

An "interrupt" in an operating system is

a signal to the processor to switch processes

Which of the following is not an input device

a speaker

the registers

act as the "scratch paper" for the instructions that are currently being carried out

A driver is a program that

allows a device to work correctly

If you select Default Programs from the Control Panel, you can

change the program that will open when you double click on a .txt file, for example

When reading a hard disk, as the heads move past a magnetic pattern,

current is induced in one direction or the other

the control unit

determine the order in which the instructions are carried out

At the Linux command prompt, enter ls to

display a list of files in the current directory.

the ALU

execute the additions, subtractions, multiplications, divisions and comparisons

VMS is an operating system for

mainframe computers

To convert binary to decimal going left to right, start with answer=0 and __ for each new bit.

multiply answer by 2 and add the new bit

An operating system provides API's (Application Programming Interfaces), which are

programming units like file open dialogs that can be used in other programs

If your Windows computer won't boot up, you should try

running a system restore

At the Windows command prompt, enter DIR to

see a list of files and directories in the current directory

the cache memory

speed up the transfer of instructions from the RAM to the processor

system unit

the box that contains the motherboard, drives and power supply

If your computer is thrashing,

the disk drive is constantly working because there is not enough RAM and the virtual memory is constantly swapping

What do the second through ninth bits of an IEEE single-precision floating point number tell you?

the exponent

An advantage of a CD over magnetic storage is

the recorded data last longer

Many universities and research organizations used UNIX because

they were given the source code

The use of space on the hard disk to simulate extra RAM is known as

virtual memory

A keyboard shortcut to open Windows Explorer is

windows-E

What is the decimal value of the following binary number? 1.01

1.25

What are the place values for an unsigned 5-bit binary number, in order from left to right?

16, 8, 4, 2, and 1

Kilobyte (KB)

210 or about 1 thousand bytes

Megabyte (MB)

220 or about 1 million bytes

Gigabyte (GB)

230 or about 1 billion bytes

What comes after 23E when counting in hexadecimal?

23F

Terabyte (TB)

240 or about 1 trillion bytes

What is the decimal value of the following unsigned 8-bit binary number? 00101100

44, because 32+8+4=44

How many bits can be represented by a two-digit hexadecimal number?

8

How are ASCII characters represented in the memory of a computer?

As binary numbers

The program in the ROM of the computer that starts up when the computer is turned on is known as the

BIOS

In Windows, the root directory of the hard drive is usually referred to as

C:\

In twos complement, what does complement mean?

Change 0's to 1's and 1's to 0's

Which is an example of a pathname in Windows?

F:\mtc\cpt104\hw5.html

The two kinds of user interfaces are

GUI and command line


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