ALL

Question 1

Competitive forces model for IT (infrastructure investment)

Answer 1

1. Market demand for firm’s services
2. Firm’s business strategy
3. Firm’s IT strategy, infrastructure, and cost
4. Information technology assessment
5. Competitor services
6. Competitor firm IT infrastructure investments

Question 2

Total cost of ownership (TCO) model :

Answer 2

Analyzes direct and indirect costs

Question 3

How should IT department be organized?

Answer 3

1-Centralized: هنع لوؤسم نوكي مسقلا
2-Decentralized: همدختست ماسقلأا لك

Question 4

Management Issues:

Answer 4

Dealing with platform and infrastructure change.
As firms shrink or grow, IT needs to be flexible and scalable

Question 5

Cloud computing:

Answer 5

1- On-demand (utility) computing services obtained over network:
a. Infrastructure as a service
b. Platform as a service
c. Software as a service

Question 6

Drawbacks IN Cloud computing:

Answer 6

Concerns of security, reliability.

Question 7

The emerging mobile digital platform:

Answer 7

1-Cell phones, smartphones
2-Netbooks
3-Tablets (iPad)
4-Networked e-readers (Kindle)

Question 8

Networking/telecommunications platforms:

Answer 8

1-Telecommunication services
2- Network operating systems
3- Network hardware providers

Question 9

Data management and storage:

Answer 9

1- Database software
2- Physical data storage
3-Storage area networks (SANs)

Question 10

Computer hardware platforms:

Answer 10

1-Client machines
2-Servers
3-Mainframes.

Question 11

*IT Infrastructure components:

Answer 11

1 .hardware platforms
2 .Operating system platforms
3 .Enterprise software applications
4 .Data management and storage
5 .Networking/telecommunications platforms
6 .Internet platforms
7. Consulting system integration services

Question 12

Set of firmwide services including :

Answer 12

1. Computing platforms.
2. Telecommunications services
3. Data management services
4. Application software services
5. Physical facilities management services
6. IT management ,etc and development services

Question 13

Data cleansing:

Answer 13

Software to detect and correct data that are incorrec

Question 14

Typical configuration:

Answer 14

1-Web server
2-Application server/middleware
3-Database server (hosting DBM)

Question 15

Web mining:

Answer 15

Discovery and analysis of useful information from WWW

Question 16

Three key techniques for using special tools:

Answer 16

1.Data warehousing
2.Data mining
3. accessing databases through the Web

Question 17

Using Databases to Improve Business Performance and Decision Making:

Answer 17

1- To analyze large amount of data
2- To access data from multiple systems

Question 18

Entity-relationship diagram:

Answer 18

to document the data model and llustrates
relationships between entities.

Question 19

Designing Databases:

Answer 19

• (logical) design: Abstract model from business .
• Physical design: database is arranged on direct-access storage device

Question 20

Relational DBMS:

Answer 20

data as two-dimensional tables. table contains entity and attributes

Question 21

Solves problems of traditional file environment

Answer 21

1. Controls redundancy
2. Eliminates inconsistency
3. Uncouples programs and data
4. organization

Question 22

Problems with the traditional file environment:

Answer 22

1- Data redundancy: duplicate data in multiple files
2- Data inconsistency: Same attribute has different values
3- Program-data dependence: When changes in program requires changes to data
accessed by program
4- Lack of flexibility
5- Poor security
6- Lack of data sharing and availability

Question 23

WiMax :

Answer 23

Wireless access range of 31 miles

Question 24

Web 3.0 :

Answer 24

Semantic Web

Question 25

transmission media types :

Answer 25

1- Physical 2- Wireless

Question 26

Modem:

Answer 26

Translates digital signals into analog form.

Question 27

Client/server computing

Answer 27

replaced centralized mainframe computing.

Question 28

components of networks in large companies:

Answer 28

1- (LANs) linked to together 2- Various powerful servers 3- Mobile wireless LANs 4- Videoconferencing system 5- Telephone network 6- Wireless cell phones

Question 29

Major components in simple network:

Answer 29

1- Client computer 2- Server computer 3- Network interfaces 4- Connection medium 5- Network operating system 6- Hub or switch

Question 30

Convergence:

Answer 30

converging into single digital network using Internet standard.