Test 2 COB 204

Question 1

Which of the following are difficulties with managing data?
a) Rapid increase in the amount of data.
b) Data is often scattered across organizations.
c) Multiple and new sources of data.
d) lack of database software to handle data

Answer 1

A, B, and C

Question 2

Database

Answer 2

Organized collection of data.

Question 3

Which of the following are considered characteristics of ‘good’ data? (requires multiple answers)

Answer 3

Accurate, timely, and useful.

Question 4

In a relational database, each table contains information about

Answer 4

An entity.

Question 5

A database management system can help to reduce: (requires multiple answers)

Answer 5

Data redundancy, data isolation, data inconsistency.

Question 6

The three architectural layers of software are

Answer 6

Bios/device drivers, operating systems, and application programs.

Question 7

Why do computers use the binary or base2 number system?

Answer 7

2 states can be easily represented electronically.

Question 8

What table is used to match binary integers with characters from the world’s languages?

Answer 8

Unicode table.

Question 9

What statements are true regarding multimedia digital files?
a) Files are created by sampling actual sound and video.
b) A bigger sampling of actual sound and video results in a better-quality file.
c) Precisely measuring sample points from actual sound and video sampling results in a better-quality file.
d) They contain discreet data.

Answer 9

A, B, and C.

Question 10

What are the two main components of an operating system?
a) Kernel
b) Shell
c) Bios/device drivers
d) application

Answer 10

A and B

Question 11

Computer software such as operating systems and applications are stored when the computer is turned off in

Answer 11

Storage/hard drive.

Question 12

A virtual computer/machine is

Answer 12

software emulation of computer hardware

Question 13

Which of the following is the operating system used in a data center to control many physical computers and virtual machines?

Answer 13

Hypervisor

Question 14

What category of application software is used across different industries?

Answer 14

Horizontal

Question 15

What category of software is used within a specific industry?

Answer 15

Vertical

Question 16

The definition of a computer network is

Answer 16

two or more computers that are connected and can exchange data

Question 17

Which of the following are disadvantages to cloud computing?
a) Dependency upon cloud vendor
b) Loss of Data Ownership
c) No Control over security
d) Must have Internet Access

Answer 17

A, B, C, and D

Question 18

What are the characteristics of packet-switched networks like the Internet? (requires multiple answers)
a) multi-path structure from one host to another
b) can continue to operate if portions are lost
c) packets will find the most efficient path from one host to another
d) the logic is circuit-switched

Answer 18

A, B, and C

Question 19

Which of the following are network applications? (requires multiple answers)
a) Web browser
b) Web server
c) Mobile Apps
d) Device drivers

Answer 19

A, B, and C

Question 20

TCP/IP, DNS, and Ethernet are all network

Answer 20

Protocols

Question 21

The difference between a LAN and a WAN is primarily

Answer 21

Involvement of a telecom provider

Question 22

The cloud service that provides just computer is

Answer 22

LAAS

Question 23

The cloud service that provides computer with operating systems is

Answer 23

PAAS

Question 24

The cloud service that provides computers with operating systems and applications is

Answer 24

SAAS

Question 25

Which of the following are advantages to cloud computing?
a) Scalability
b) No capital outlays for IT infrastructure
c) Expertise of Cloud Vendor
d) Mobile computing support

Answer 25

A, B, C, D.