PTI Assignment chapter 10

Rickvian Aldi / 1601253441 / 01PBT

True/False

1.True

2. True

 3. False 

4.True

5. False

6. False

7. True

8. True

9. False

10. True

Multiple Choices

1. B

2. A

3. D

4. B

5. A

6. B

7. B

8. A

Matching

1.  E

2.  G

3.  C

4.  B

5.  J

6.  A

7.   I

8.  D

9.  H

10. 

Short Answer

1. -Validation is the process of comparing data with a set of rules or values to find out if the data is correct.

-Five types of validity checks: Alphabetic checks, Numeric checks, Range checks, Consistency checks, Completeness checks.

2. -In data redundancy each department or area in an organization has its own files in a file processing system, by duplicating data it wastes resources such as storage space and people’s time, also data redundancy can increase the chance of error.

-Isolated data often it’s difficult to access data stored in separate files in different department. Sharing data from multiple, separate files to generate such a list in a file processing system often is a complicated procedure and usually requires the experience of a computer programmer.

3. -When an organization uses a database approach, many programs and users share the data in the database.

-Five strengths of the database approach:

- Reduces Data Redundancy, most data items are stored in only one file, which greatly reduces duplicated data.

-Improved data Integrity, when users modify data in the database, they make change to one file instead of multiple files.

-Shared data, The data in a database environment belongs to and is shared, usually over a network, by the entire organization.

-Easier Access, the database approach allows nontechnical users to access and maintain data, providing they have the necessary privileges.

-Reduces Development Time, it often is easier and faster to develop programs that use the database approach.

4. -How to use a Simple Query Wizard:

-Select the fields from the Available Fields list you want to be displayed in the resulting query.

-Assign a name to the query, so that you can open it later.

-View the query result on the screen.

-Query by example is a feature that has a graphical user interface to assist users with retrieving data.

5.   Advantages of object-oriented database:

-They can store more type of data, access this data faster, and allow programmers to reuse object.

Four examples of object-oriented database:

-A multimedia database stores images, audio clips, and/or video clips, for example, a GIS database stores maps and other geographic data.

-A groupware database stores documents such as schedules, calendars, manuals, memos, and reports.

-A computer-aided design database stores data about engineering, architectural, and scientific design.

-A hypertext database contains text links to other types of documents. A hypermedia database contains test, graphic, video, and sound.

PTI Assignment chapter 9

Rickvian aldi / 1601253441 / O1PBT

True/False

1. True

2. False

3. True

4. False

5. True

6. True
7. False

8. True
9. False
10. True
11. True

Multiple Choice

1. C

2. C

3. C

4. D
5. B
6. A
7. D

8. B

Matching

1. E

2. J

3. H

4. D

5. F
6. A
7. G
8. B
9. C

10. I

Short Answer

1.-Text messaging is a process where users sends and receives short text messages, typically fewer than 300 characters, on a phone or other mobile device or computer.

-Mobile to Mobile: send a message from your mobile device to another mobile device. -Mobile to E-Mail: send a message from your mobile device to an e-mail address anywhere in the world. Web to Mobile: send a message from a text messaging Web site to a mobile device, or request that a Web site alert a mobile device with messages of breaking news and other updates, such as sports scores, stock prices, and weather forecasts. Mobile to Provider: send a message by entering a common short code (CSC), which is a four- or five-digit number assigned to a specific content or wireless service provider, followed by the message, such as a vote for a television program contestant or an entry for a sweepstakes. 2 GPS satellites orbit Earth. Every thousandth of a second, each satellite sends a signal that indicates its current position to the GPS receiver. GPS receiver (such as in a car, a wearable device, a smart phone, a handheld device, or a collar) determines its location on Earth by analyzing at least 3 separate satellite signals from the 24 satellites in orbit.

-Individuals use GPS technology by using smart phones or GPS receiver.

3. A local area network (LAN) is a network that connects computers and devices in a limited geographical area such as a home, school computer laboratory, office building, or closely positioned group of buildings. A metropolitan area network (MAN) is a high-speed network that connects local area networks in a metropolitan area such as a city or town and handles the bulk of communications activity across that region. A wide area network (WAN) is a network that covers a large geographic area (such as a city, country, or the world) using a communications channel that combines many types of media such as telephone lines, cables, and radio waves.

-A wireless LAN (WLAN) is a LAN that uses no physical wires.

4.-A network topology refers to the layout of the computers and devices in a communications network.

-Five types of digital dedicated lines are ISDN lines, DSL, FTTP, T-carrier lines, and ATM.

5.-Three types of digital modems are ISDN modems, DSL modems, and cable modems.

-An ISDN modem sends digital data and information from a computer to an ISDN line and receives digital data and information from an ISDN line. A DSL modem sends digital data and information from a computer to a DSL line and receives digital data and information from a DSL line. A cable modem, sometimes called a broadband modem, is a digital modem that sends and receives digital data over the cable television (CATV) network.

PTI Assignment chapter 8

Rickvian aldi / 1601253441 / 01PBT

True/False

1. False

2. False

3. True

4. False

5. True
6. True
7. True
8. True
9. False

10. True

Multiple Choice

1. B

2. B

3. C

4. A
5. C
6. D
7. C

8. A

Matching

1. E

2. J

3. H

4. D

5. F
6. A
7. G
8. B
9. C

10. I

Short Answer

1.-Cold boot is the process of starting up a computer when previously the computer is turned off completely. A warm boot, by contrast, is the process of using the operating system to restart a computer.

Memory resident, which means instructions remains in memory while the computer is running. While nonresident, means instructions remain on a storage medium until they are needed.

2.- User interface controls how you enter data and instructions and how information is displayed on the screen.

-Command line interface is completely command controlled ,flow of program controls by giving commands. so user have to familiar with commands. a novice user can not operate a CUI environment. In Graphical user interface user interact to a visual environment like buttons, icons, images. so it is easy to use and a novice user can operate it without pre-training.

3.-The purpose of an automatic update feature are to fix program bugs, or errors, enhancements to security, modifications to device drivers, access to new or expanded components such as desktop themes or games, and even updates to application software on the computer such as a Web browser or an e-mail program.

-increase the security and functionality of the software updated by the service pack. And user will receive a service update whenever they become available through an official service run by the company that made the software the service pack is for.

4. -The computer is storing all of your current files onto any disk drive or memory space you select. It copies your in tire file database, including games, music, pictures, and videos into some safely secured area where you can easily restore your documents and computer state from.

The purpose of a restore utility is to reverse the backup process and return backed up files to their original form.

5.-Windows Embedded CE is a scaled-down Windows operating system designed for use on communications, entertainment, and computing devices with limited functionality.functionality. Windows Mobile, an operating system based on Windows Embedded CE, includes functionality, programs, and a user interface designed for specific types of smart phones and PDAs. iPhone OS, developed by Apple, is an operating system for the iPhone and iPod touch, Apple’s smart phone and touch screen portable media player, respectively. Google Android is an operating system designed by Google for mobile devices. The uses of Windows Embedded CE include VoIP telephones, industrial control devices, digital cameras, point-of-sale terminals, automated teller machines, digital photo frames, fuel pumps, security robots, handheld navigation devices, portable media players, ticket machines, and computerized sewing machines. While Windows mobile, iPhone OS and Google android are used for multitasking such as messaging, internet, chatting, calculating number, calender, etc.

PTI Assignment Chapter 7

Rickvian Aldi / 1601253441

True/False
1. True
2. False
3. False
4. False
5. False
6. False
7. True
8. True
9. False
10. True
11. False
12. False
13. True

Multiple choice
1. B
2. C
3. D
4. D
5. A
6. C
7. B
8. B

Matching
1. H
2. C
3. A
4. E
5. F
6. J
7. D
8. B
9. I
10. G

Short answer

1.-Is a server connected to a network with the sole purpose of providing storage.

-Up to 6 tera byte.

2.-thinner, longer cables; reduced interference; less expensive; support for many more connected devices at once; and faster speeds.

-optical disc drives, printers, scanners, digital cameras, and other devices

3.-single section disc : manufacturers write all items on the disc at one time.

-Multi session disc : writes on part of the disc at one time and another part at a later time.

-stores photo from online.

4.-Memory cards enable mobile users easily to transport digital photos, music, or files to and from mobile devices and computers or other devices.

• Compact flash ( CF) : storage capacity 512 MB- 100 GB
• secure digital (SD) : storage capacity 512 BM – 8GB
• SDHC : storage capacity 4-32 GB
• micro SD : storage capacity 1-2 GB
• microSDHC : storage capacity 4-16 GB
• xD picture card : storage capacity 256 MB – 2 GB
• memory stick pro duo : storage capacity 1-16 GB
• memory stick micro : storage capacity 1-16 GB

5.-Microfilm : a 100- to 215-foot roll of film.

-Microfiche : small sheet of film, usually about 4 x 36 inches

-They greatly reduce the amount of paper firms must handle. They are inexpensive and have the
longest life of any storage media

PTI assignment chapter 6

Rickvian aldi 1601253441

Chapter Six

True/ False
1. True                      
2. True                        
3. False                      
4. True                      
5. False                    
6. False                      
7. True

8. False

9. False

10.True

11.False

12.False

13.False

Multiple Choice
1. D
2. B                        
3. A                        
4. D      

5.D

6. B

7. C

8.D

Matching
1. B                        
2. G                      
3. D                      
4. J                      
5. E                      

6. A
7. H

8. F

9. I

10. C

Short Answer
1. -Resolution is the number of horizontal and vertical pixels in a display device. The greater the number of pixels the camera uses to capture a picture, the better the quality of the picture. Thus, the higher the resolution, the better the picture quality.

- the bigger the size of the LCD monitor or screen then the higher the resolution of the monitor

2. HDTV features:
- working with digital broadcast signal transmitting digital sound ,supporting wide screens provide resolution up to 1920 x 1080 pixels

- the console game user often use television for it’s output by connecting the device video port on the television.

3. –The two type of printing technology are Bluetooth and Infrared.

- With Bluetooth printing, a computer or other device transmits output to a printer via radio waves.  The computer or other device and the printer do not have to be aligned with each other; rather, they need to be within an approximate 30-foot range. while infrared printing, a printer communicates with a computer or other device using infrared light waves. To print from a smart phone, for example, a user lines up the IrDA port on the smart phone with the IrDA port on the printer.

4. -An ink-jet printer is a type of nonimpact printer that forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.

- Difference usage of dye-sublimation printer for professional user to house or office user are that Professional applications requiring high image quality, such as photography studios, medical labs, and security identification systems, use dye-sublimation printers and these high-end printers cost thousands of dollars and print images in a wide range of sizes.
while  dye-sublimation printers for the home or small business user, by contrast, typically print images in only one or two sizes and are much slower than their professional counterparts. These lower-end dye-sublimation printers are comparable in cost to a photo printer based on ink-jet technology.

5. -Most surround sound computer speaker systems include one or two center speakers and two or more satellite speakers that are positioned so that sound emits from all directions. 

 -Audio resolution, which is the number of bytes that represent sound in a given time, is stated as a bit rate there are 3 type of bit rate such as 8-bit, 16-bit, or 24-bit.