9626_w20_qp_33 - revisedeck

9626_w20_qp_33

A paper of Information Technology, 9626

Questions:

12

Year:

2020

Paper:

3

Variant:

3

Login to start this paper & get access to powerful tools

1

LANs and WANs use protocols to send, receive and route data across networks. Describe, in detail, each of the following protocols. Dynamic Host Configuration Protocol (DHCP) BitTorrent User Datagram Protocol (UDP) Transmission Control Protocol (TCP)

14. Communications technology → 14.6. Network protocols

Open

2

Companies are concerned that their employee files may be viewed and used by unauthorised people. A company uses access rights to protect files stored on its network. Explain how different access rights can be used to control access to files.

14. Communications technology → 14.9. Network security

10. Database and file concepts → 10.4. File and data management

Open

3

IT crime is crime committed using computers and networks. Explain how encryption can be used to combat IT crime.

1. Data processing and information → 1.3. Encryption

12. IT in society → 12.4. The impact of IT

Open

4

A company employs a large number of teleworkers. Discuss the effects of teleworking on the workers.

6. The digital divide → 6.1. The digital divide

12. IT in society → 12.4. The impact of IT

14. Communications technology → 14.3. Network servers

Open

5

The JavaScript code shown in adds together 12 and 6 to produce the result 18. Line numbers are shown only for reference purposes. A Web Page A Paragraph var x, y; 10 x=12; 11 y=6; 12 window.alert(x + y); Describe how the script operates to display the result on the screen. JavaScript uses the display capabilities of web browsers’ windows to output the results of its scripts. Explain why JavaScript uses a browser’s windows to display results of running scripts.

21. Programming for the web → 21.1. Programming for the web

Open

6

A company makes shoes and boots and uses automatic stock control in its operations. Describe how automatic stock control could be used by the company.

3. Monitoring and control → 3.2. Control technologies

1. Data processing and information → 1.5. Data processing

Open

7

A bank is installing a new computer system to replace its existing system. Analyse the suitability of the parallel running implementation method in this situation.

16. System life cycle → 16.5. Implementation

2. Hardware and software → 2.2. System software

Open

8

Bitmap images can be saved in different file formats. Images may be compressed when saving to a file. Analyse the use of different file formats for storing compressed bitmap images.

19. Graphics creation → 19.4. Compression

10. Database and file concepts → 10.4. File and data management

19. Graphics creation → 19.1. Common graphics skills

Open

9

When creating letters by mail merge, mail merge rules can be used to automatically select data from sources for inclusion in the letters. Describe the use of the following mail merge rules to select data. If Then Else Next Record If Skip Record If

18. Mail merge → 18.1. Mail merge

Open

10

Planners often draw diagrams of the stages in a project so that a critical path can be calculated. Describe what must be included in a diagram so that the critical path of a project can be calculated. Describe three outcomes that can be determined from a critical path analysis of a project.

15. Project management → 15.3. Tools and techniques for project management tasks

15. Project management → 15.1. The stages of the project life cycle

Open

11

Mae, a systems analyst, will use document analysis to carry out research into a company. Describe the steps she should go through when preparing to examine the company documents. Describe the steps Mae should go through when examining the company documents.

16. System life cycle → 16.2. Analysis

1. Data processing and information → 1.5. Data processing

Open

12

A company has a local area network (LAN) that can be accessed by its staff using their desktop and laptop computers as well as their smartphones. Describe the role of wireless access points (WAPs) in the network. Describe how wireless access points (WAPs) can be configured to improve network security.

14. Communications technology → 14.9. Network security

14. Communications technology → 14.7. Wireless technology

Open