Midterm

Question 1

What is “Phishing” also known as?

Answer 1

A special category of spam specifically created to defraud or commit identity theft.

Question 2

Which RAID level uses Disk mirroring without parity?

Answer 2

RAID 1

Question 3

Which of the following is the fastest dynamic memory?
50 nanosecond
60 nanosecond
70 nanosecond
80 nanosecond

Answer 3

50 nanosecond

Question 4

My laptop has 16 GB of RAM. What type of RAM am I using for my laptop?
Static RAM
Dynamic RAM
BIOS RAM
None of the above

Answer 4

Dynamic RAM

Question 5

The first sector of a hard drive is
MBR (Master Boot Record)
NTFS (New Technology File System)
Ext4 (Extended 4)
FAT32 (File Allocation Table 32)

Answer 5

MBR (Master Boot Record)

Question 6

What is a Swap partition in the Windows or Linux OS?

Answer 6

It is part of the hard drive that works like memory

Question 7

T/F - When one uses the term disc, it means the data was stored magnetically on the DVD.

Answer 7

False

Question 8

SSDs delete data in _____

Answer 8

Blocks

Question 9

The storage with the fastest access time

Answer 9

Register

Question 10

Which type of RAM is used in Cache Memory?

Answer 10

SRAM

Question 11

What is IRQ?

Answer 11

A number assigned to a device (such as a mouse, keyboard, etc)

Question 12

Which of the following scam asks you for upfront cash?

Answer 12

Phishing

Question 13

IDE hard drive has ___ pins and SATA hard drive has ___ pins

Answer 13

IDE 40, SATA 7

Question 14

Today Windows 10 operating system uses _____ file system

Answer 14

NTFS

Question 15

One of the best ways a company can prevent itself from becoming a victim of a spear-phishing
attack is to:

Answer 15

Educate Employees

Question 16

I have a 16-bit game (wolf stein). I want to play it on my Windows 10 OS. Which of the
following virtualization technique allows me to run this game?
Emulator
Linux os
Bare metal (Type 1)
Hosted (Type 2)

Answer 16

Emulator

Question 17

Which of the following symbols is sudo prompt?
Mike~$
Mike~#
Mike~S
Mike#s

Answer 17

Mike~$

Question 18

What is the command to make a partition in Linux?

Answer 18

Fdisk

Question 19

In Linux, the operating system / (Forward slash) is considered as

Answer 19

Root

Question 20

Which of the following partition is bootable?
Primary
Extended
Logical
All of the above

Answer 20

Primary

Question 21

In a Windows environment, you can have_______, ______, _______ partitions

Answer 21

3 Primary, 1 extended, 24 logical

Question 22

A programming language is usually split into two components of _______ (form) and
_________

Answer 22

Syntax and Semantics

Question 23

What is the letter to create a partition in Linux?

Answer 23

N

Question 24

Linux ______ your password when you are typing it in the terminal.

Answer 24

Doesn’t show

Question 25

Name two types of Hypervisor.

Answer 25

Host, Bare Metal

Question 26

What 2 things does the Hypervisor usually control?

Answer 26

CPU, Memory

Question 27

Windows 10 uses the ____ file system

Answer 27

NTFS

Question 28

The command for file attribute is:

Answer 28

Attrib

Question 29

Which of the following characters cannot be used in a Windows file name? $ 0 (a zero) ! >

Answer 29

>

Question 30

Please choose four file attributes. A B H R S

Answer 30

A, H, R, S

Question 31

What key combinations do you hold down to display the System menu for the active Window? ALT+TAB ALT+ESC ALT+ENTER ALT+SPACEBAR

Answer 31

ALT+SPACEBAR

Question 32

T/F - Viruses and Worms require user interaction to infect the initial host.

Answer 32

False

Question 33

Electronic recycling is also known as _______.

Answer 33

Urban Mining

Question 34

What is a core processor?

Answer 34

A physical processing unit runs independently from each other within a CPU.

Question 35

What is Defragmenting?

Answer 35

Defragmenting: this is a way to organize the scattered files on the platter (HDD) for faster reading.

Question 36

According to the lecture, which operating system came first?

Answer 36

Unix

Question 37

Which 2 of the following would characterize DOS operating system? GUI 16 bit 32 bit Single task

Answer 37

16 bit Single task

Question 38

Which device uses a lithium battery

Answer 38

the BIOS

Question 39

T/F - Color Depth: the number of color values that can be assigned to a single pixel in an image

Answer 39

True

Question 40

In computer programming, a floating point is a ____ with a ______

Answer 40

Real number with a decimal ie. 3.15

Question 41

a bit is the most ___ ____ of information

Answer 41

Basic Unit

Question 42

a byte is the smallest possible ______ unit of computer storage

Answer 42

Addressable

Question 43

a _____ is a contiguous group of bytes contiguous - next or together in sequence

Answer 43

Word

Question 44

Word sizes of __, __, or __ bits are most common

Answer 44

16, 32, 64

Question 45

In a ____ _______ system, a word is the smallest addressable unit of storage

Answer 45

Word Addressable

Question 46

A group of 4 bits is called a

Answer 46

Nibble

Question 47

Two nibbles create a

Answer 47

Byte

Question 48

The two nibbles in a byte are split by

Answer 48

High order and low order

Question 49

a _____ _____ is the symbol used in numerical representations to separate the integer part of a number from its fractional part

Answer 49

Radix point

Question 50

A floating point is a number with

Answer 50

a decimal or "fractional part"

Question 51

Single precision 754 is a __ ___number while Double precision 754 is a __ ___number

Answer 51

32 bit, 64 bit

Question 52

The range of a floating point is

Answer 52

the largest and smallest values that can be expressed

Question 53

Precision of a floating point is

Answer 53

the amount of information we have about a value. In other words, the amount of decimal places are at the end of a given measurement. "the floating point is precise to the nth decimal place"

Question 54

Precision of a floating point is

Answer 54

the amount of information we have about a value. In other words, the number of decimal places that are at the end of a given measurement. "The floating point is precise to the nth decimal place"

Question 55

The accuracy of a floating point is

Answer 55

how closely a numeric representation approximates a true value

Question 56

Floating point overflow is when

Answer 56

there is no room to store the high-order bits resulting from a calculation

Question 57

Underflow occurs when a value is

Answer 57

too small to store, possibly by resulting from division by 0

Question 58

Unsigned numbers only store ______ numbers, not ______ numbers

Answer 58

positive, not negative

Question 59

Signed numbers either use a ____ (__) or can be _________ between negative values and positive values Examples:

Answer 59

flag (bit), distinguished Examples: +25 or [0]11001 [] added for visuals

Question 60

+7 signed vs unsigned

Answer 60

0111 vs 111

Question 61

2 and 6 in 3 bit signed form

Answer 61

0010 and 0110

Question 62

-2 and -6 in 3 unsigned form

Answer 62

1010 and 1110

Question 63

To represent negative values, computer systems allocate the ____ _____ bit to indicate the sign of a value

Answer 63

high order

Question 64

The high order bit is the ____ ____ bit in a byte

Answer 64

left most

Question 65

The high order bit is also called ____ ___________ bit

Answer 65

Most significant bit

Question 66

+3 and -3 In 8 bit signed magnitude

Answer 66

000000011 and 10000011

Question 67

Computers perform arithmetic operations on signed magnitude numbers in a similar to humans, how?

Answer 67

by ignoring the sign of the operands, doing the calculation, then applying the appropriate sign afterwards

Question 68

2 disadvantages of signed magnitude

Answer 68

1. Despite being easy for people, difficult for computers (requires complicated hardware) 2. Allows 2 different representations of 0, positive and negative 0

Question 69

Instead of signed magnitude, computers employ _______ ______

Answer 69

complement systems

Question 70

Positive and negative 0 causes

Answer 70

Hardware issues

Question 71

+0 and -0 in 3 bit signed form

Answer 71

000 and 100

Question 72

In signed magnitude you add a _ to the ___ if the number is positive

Answer 72

0 to the MSB

Question 73

In signed magnitude you add a _ to the ___ if the number is negative

Answer 73

1 to the MSB

Question 74

In one's complement if the number is positive, convert it to ______ then add a _ for the sign bit

Answer 74

Binary, add a 0

Question 75

In one's complement if the number is negative, convert to binary, add a _, then _____ the bits _______

Answer 75

add a 0, then flip the bits opposite Ex. 45 = 0101101 -45 = 1010010

Question 76

7 vs -7 in 8 bit one's complement

Answer 76

00000111 vs 11111000

Question 77

Complement systems are useful because they eliminate the need for ________

Answer 77

Subtraction

Question 78

The disadvantage of one's complement is that it still has 2 representations of

Answer 78

0, positive and negative 0

Question 79

000 in binary translates to ___ in one's complement

Answer 79

111

Question 80

111 in binary translates to ___ in one's complement

Answer 80

000

Question 81

In two's complement, convert it to binary and add _ for the sign bit

Answer 81

0

Question 82

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