IT Practise Questions
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True or False
1. A communication channel is the media on which data, instructions, or informations
travel.(T)2. A web server is a computer that delivers requested Web pages to your computer. (T)3. An intranet is an internal network that uses Internet technologies. (T)4. The 40-Gigabit Ethernet standard is the fastest of the Ethernet standards. (F)5. Bluetooth does not require line-of-sight transmission. (T)6. At a distance of 10 meters (about 33 feet), the data transfer rate for UWB devices is 480
MBPS. (F)
7. Fiber to the Presmises (FTTP) uses fibre-optic cable to provide extremely high speedinterney acess to the users physical permanent location. (T)
8. Latency is the time it takes a signal to travel from one location to another on a network.(T)
Chapter 09: Communications and Networks
1 out of 20
1. A(n) ____ modem usually is in the form of an adapter card that you insert in an expansion slot on a computer'smotherboard.
a. DSL
b. ISDN
c. dial-up
d. cable
34
2 out of 20
2. Devices equipped with ____ ports transfer data at rates from 115 Kbps (thousand bits per second) to 4 Mbpsbetween their ports.
a. Bluetooth
b. IrDA
c. TCP/IP
d. Ethernet
27 27
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3 out of 20
3. Simple ____ applications include electronic publishing of organizational materials such as telephone directories,event calendars, procedure manuals, employee benefits information, and job postings.
a. ring network
b. extranet
c. star network
d. intranet
23 53
4 out of 20
4. Two types of wireless Internet access points are ____ and mobile wireless networks.
a. SMS
b. Web services
c. hot spots
d. TCP/IP
4 8
5 out of 20
5. Data, instructions, and information travel on a(n) ____.
a. sending device
b. receiving device
c. analog device
d. communications channel
1 1
6 out of 20
6. ____ use wire, cable, and other tangible materials to send communications signals.
a. 802.11
b. Bluetooth
c. IrDA
d. Physical transmission media
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45 43
7 out of 20
7. The server on a client/server network is sometimes called the ____ computer.
a. node
b. client
c. host
d. peer
14 17
8 out of 20
8. A(n) ____ extends the basic home network to include features such as lighting control, thermostat adjustment, anda security system.
a. intelligent home network
b. wireless home network
c. phoneline network
d. powerline cable network
40 42
9 out of 20
9. A high-speed network that connects local area networks in a city or town and handles the bulk of communicationsactivity across that region is called a ____.
a. wide area network (WAN)
b. wireless LAN (WLAN)
c. metropolitan area network (MAN)
d. value-added network (VAN)
12 15
10 out of 20
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10. Users who do not have other high-speed Internet access in their area can opt for ____.
a. FTP
b. fractional T1
c. WAP
d. dial-up
34 32
11 out of 20
11. ____ is a type of application software used for communications.
a. FTP software
b. Word processing software
c. Database software
d. Image editing software
29 28
12 out of 20
12. ____ sometimes is referred to as wireless Ethernet because it uses techniques similar to the Ethernet standard tospecify how physically to configure a wireless network.
a. Wi-Fi
b. TCP/IP
c. IrDA
d. Bluetooth
25 25
13 out of 20
13. On a ____, a cable forms a closed loop with all computers and devices arranged along the loop.
a. ring network
b. bus network
c. star network
d. bus ring network
22 52
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14 out of 20
14. With ____, the data transfers between devices at a rate of up to 3 Mbps.
a. TCP/IP
b. Bluetooth
c. Ethernet
d. 802.11
26 24
15 out of 20
15. A central communications device that allows computers and devices to transfer data wirelessly amongthemselves is called a ____.
a. network interface card
b. wireless access point
c. digital modem
d. router
38 35
16 out of 20
16. A print server is an example of a(n) ____.
a. Ethernet
b. dedicated server
c. client
d. intranet
15 18
17 out of 20
17. To prevent unauthorized users from accessing files and computers, many routers are protected by a built -in ____.
a. hub
b. bridge
c. switch
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d. firewall
39 36
18 out of 20
18. A(n) ____ consists of individual electrical pulses that represent bits grouped into bytes.
a. analog signal
b. digital signal
c. communications channel
d. transmission medium
35 2
19 out of 20
19. ____ includes network hardware and software that enables group members to communicate, manage projects,schedule meetings, and make group decisions.
a. Workgroup computing
b. Web services
c. Voicemail
d. Voice over IP (VoIP)
6 7
20 out of 20
20. For successful communications, you need a(n) ____ that connects the communications channel to a receivingdevice.
a. communications device
b. analog signal
c. sending device
d. digital signal
2 3
Chapter 09: Communications and Networks
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1 out of 20
1. The layout of the computers and devices in a communicationsnetwork is called a(n) ____.
a. network architecture
b. communications satellite
c. network topology
d. intelligent network
20 49
2 out of 20
2. ____ is a type of application software used for communications.
a. FTP software
b. Word processing software
c. Database software
d. Image editing software
29 28
3 out of 20
3. Two types of wireless Internet access points are ____ and mobile
wireless networks.
a. SMS
b. Web services
c. hot spots
d. TCP/IP
4 8
4 out of 20
4. A print server is an example of a(n) ____.
a. Ethernet
b. dedicated server
c. client
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d. intranet
15 18
5 out of 20
5. A(n) ____ modem usually is in the form of an adapter card that youinsert in an expansion slot on a computer's motherboard.
a. DSL
b. ISDN
c. dial-up
d. cable
36 34
6 out of 20
6. A(n) ____ extends the basic home network to include features suchas lighting control, thermostat adjustment, and a security system.
a. intelligent home network
b. wireless home network
c. phoneline network
d. powerline cable network40 42
7 out of 20
7. A form of broadcast radio that is used widely for mobilecommunications is called ____.
a. infrared
b. microwave
c. cellular radio
d. communications satellite
49 47
8 out of 20
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8. A collection of computers and devices connected together viacommunications devices and transmission media is called a(n) ____.
a. workgroup
b. online meeting
c. cybercafe
d. network
8 11
9 out of 20
9. With ____, the data transfers between devices at a rate of up to 3Mbps.
a. TCP/IP
b. Bluetooth
c. Ethernet
d. 802.11
26 24
10 out of 20
10. Users who do not have other high-speed Internet access in theirarea can opt for ____.
a. FTP
b. fractional T1
c. WAP
d. dial-up
34 32
11 out of 20
11. On a ____, all of the computers and devices (nodes) on the networkconnect to a central device.
a. ring network
b. bus network
c. star network
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d. bus ring network
21 22
12 out of 20
12. For successful communications, you need a(n) ____ that connectsthe communications channel to a receiving device.
a. communications device
b. analog signal
c. sending device
d. digital signal
2 3
13 out of 20
13. A computer in a voice mail system converts an analog voicemessage into ____ form.
a. radio
b. digital
c. packet
d. chat7 9
14 out of 20
14. A(n) ____ is as thin as a human hair.
a. coaxial cable
b. twisted-pair cable
c. optical fiber
d. broadband cable
47 45
15 out of 20
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15. The design of computers, devices, and media in a network issometimes called the ____.
a. network architecture
b. network dictionary
c. network router
d. network map
13 16
16 out of 20
16. A(n) ____ consists of individual electrical pulses that represent bitsgrouped into bytes.
a. analog signal
b. digital signal
c. communications channel
d. transmission medium
35 2
17 out of 20
17. XML is used in ____, which is used to distribute content, such asnews, to subscribers.
a. Electronic Data Interchange (EDI)
b. RSS
c. EFT
d. value-added network (VAN)
10 12
18 out of 20
18. Coaxial cable is often referred to as ____.
a. twisted-pair
b. fiber optic
c. 10Base-T
d. coax
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46 44
19 out of 20
19. ____ describes an Internet network on which users access eachother's hard disks.
a. Intranet
b. TCP/IP
c. P2P
d. Client/server
18 21
20 out of 20
20. Walls, ceilings, and electrical devices such as cordless telephonesand microwave ovens can disrupt ____ network communications.
a. Ethernet
b. token ring
c. TCP/IP
d. wireless44 41
1 out of 20
1. A(n) ____ is as thin as a human hair.
a. coaxial cable
b. twisted-pair cable
c. optical fiber
d. broadband cable47 45
2 out of 20
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2. ____ networks are fairly easy to configure.
a. Wi-Fi
b. Bluetooth
c. token ring
d. TCP/IP
43 51
3 out of 20
3. ____ supports faster transfer rates when receiving data than whensending data.
a. ADSL
b. DSL
c. ISDN
d. Dial-up
33 54
4 out of 20
4. A(n) ____ modem usually is in the form of an adapter card that youinsert in an expansion slot on a computer's motherboard.
a. DSL
b. ISDN
c. dial-up
d. cable
36 34
5 out of 20
5. On a ____, a cable forms a closed loop with all computers anddevices arranged along the loop.
a. ring network
b. bus network
c. star network
d. bus ring network
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22 52
6 out of 20
6. Two types of wireless Internet access points are ____ and mobilewireless networks.
a. SMS
b. Web services
c. hot spots
d. TCP/IP
4 8
7 out of 20
7. ____ describes an Internet network on which users access eachother's hard disks.
a. Intranet
b. TCP/IP
c. P2P
d. Client/server18 21
8 out of 20
8. ____ allows users connected to a network to transfer money fromone bank account to another via transmission media.
a. Electronic Data Interchange (EDI)
b. Voice mail
c. Ethernet
d. Electronic funds transfer (EFT)
11 13
9 out of 20
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9. ____ is a type of application software used for communications.
a. FTP software
b. Word processing software
c. Database software
d. Image editing software
29 28
10 out of 20
10. Devices equipped with ____ ports transfer data at rates from 115Kbps (thousand bits per second) to 4 Mbps between their ports.
a. Bluetooth
b. IrDA
c. TCP/IP
d. Ethernet
27 27
11 out of 20
11. Using a ____ line to connect computers costs no more than makinga regular telephone call.
a. dial-up
b. DSL
c. CATV
d. T-carrier
30 29
12 out of 20
12. Users who do not have other high-speed Internet access in theirarea can opt for ____.
a. FTP
b. fractional T1
c. WAP
d. dial-up
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34 32
13 out of 20
13. Simple ____ applications include electronic publishing oforganizational materials such as telephone directories, event calendars,procedure manuals, employee benefits information, and job postings.
a. ring network
b. extranet
c. star network
d. intranet
23 53
14 out of 20
14. To prevent unauthorized users from accessing files and computers,many routers are protected by a built-in ____.
a. hub
b. bridge
c. switch
d. firewall
39 36
15 out of 20
15. A(n) ____ is a wireless network that provides Internet connectionsto mobile computers and other devices.
a. hot spot
b. online meeting
c. global positioning system (GPS)
d. cybercafe
5 10
16 out of 20
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16. Examples of networking software that support ____ are BitTorrent,Gnutella, Kazaa, and LimeWire, which allow users to swap music andother files via the Web.
a. client/server networking
b. P2P
c. peer-to-peer networking
d. intelligent home networking
19 50
17 out of 20
17. For successful communications, you need a(n) ____ that connectsthe communications channel to a receiving device.
a. communications device
b. analog signal
c. sending device
d. digital signal
2 3
18 out of 20
18. Most home networks use a ____ network, which sends signals
through the air at distances of up to 1,500 feet in some configurations.
a. Wi-Fi
b. Bluetooth
c. token ring
d. TCP/IP
42 39
19 out of 20
19. A central communications device that allows computers anddevices to transfer data wirelessly among themselves is called a ____.
a. network interface card
b. wireless access point
c. digital modem
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d. router
38 35
20 out of 20
20. A print server is an example of a(n) ____.
a. Ethernet
b. dedicated server
c. client
d. intranet
15 18
Chapter 10: Database Management
1 out of 20
1. A Web database usually resides on a ____.
a. backbone
b. database client
c. database server
d. tuple
46 36
2 out of 20
2. ____ information should give more value than it costs to produce.
a. Cost-effective
b. Useful
c. Verifiable
d. Timely
8 42
3 out of 20
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3. A(n) ____ is a copy of a record after changes have been made to it.
a. rollforward
b. before image
c. after image
d. rollback
36 26
4 out of 20
4. The ____ data is characterized by lengthy text entries.
a. currency
b. memo
c. hyperlink
d. text
14 44
5 out of 20
5. ____ is a popular query language that allows users to manage,update, and retrieve data.
a. Sybase
b. SQL
c. DB2
d. D3
40 30
6 out of 20
6. The role of coordinating the use of the database belongs to thedatabase ____ and administrators.
a. designers
b. users
c. owners
d. analysts
47 37
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7 out of 20
7. ____ procedures include adding records to, modifying records in, anddeleting records from a file.
a. Data hierarchy
b. File maintenance
c. File Validation
d. Data normalization
17 13
8 out of 20
8. Processed data is called ____.
a. software
b. input
c. information
d. communications
1 3
9 out of 20
9. A program that generally has a more user-friendly interface than aDBMS is called a ____.
a. front end
b. repository
c. back end
d. form
27 20
10 out of 20
10. Each field is uniquely identified by a ____.
a. data type
b. key field
c. field name
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d. data file
10 43
11 out of 20
11. A data dictionary is sometimes called a ____.
a. repository
b. data mine
c. data warehouse
d. report generator
29 48
12 out of 20
12. A ____ analyzes entered data to help ensure that it is correct.
a. file processing system
b. database approach
c. validity check
d. data dictionary
18 14
13 out of 20
13. A ____ contains text, graphics, video, and sound.
a. hypermedia database
b. multimedia database
c. Web database
d. groupware database
42 32
14 out of 20
14. ____ data is also called alphanumeric data.
a. Text
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b. Currency
c. Memo
d. Object
12 9
15 out of 20
15. ____ information has an age suited to its use.
a. Continuous
b. Timely
c. Extemporaneous
d. Sequential
5 1
16 out of 20
16. A(n) ____ check ensures that users enter only numeric data into afield.
a. alphanumeric
b. consistency
c. range
d. numeric
22 47
17 out of 20
17. The field that uniquely identifies each record in a file is called a____.
a. composite key
b. check digit
c. primary key
d. validity check
16 10
18 out of 20
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18. An item that contains data, as well as the actions that read orprocess the data, is called a(n) ____.
a. query
b. hypercube
c. object
d. CGI script
41 31
19 out of 20
19. Validity checks are also called ____.
a. queries
b. validation rules
c. relations
d. data models
20 45
20 out of 20
20. ____ for data involve establishing who can enter new data, modifyexisting data, delete unwanted data, and view data.
a. Access privileges
b. Entry privileges
c. Write privileges
d. Editing privileges
35 25
1. ____ is a popular query language that allows users to manage,update, and retrieve data.
a. Sybase
b. SQL
c. DB2
d. D3
40 30
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2 out of 20
2. ____ reduce data entry errors and thus enhance the data's integrity.
a. Validity checks
b. Checksums
c. Cyclic tests
d. Redundancy checks
21 15
3 out of 20
3. Processed data is called ____.
a. software
b. input
c. information
d. communications
1 3
4 out of 20
4. Access, manufactured by the Microsoft Corporation, exists inversions for ____.
a. personal computer, server, mainframe, mobile devices
b. personal computer, server, mainframe
c. personal computer, server, mobile devices
d. server, mainframe
28 49
5 out of 20
5. For a computer to produce correct information, the data that isentered into a database must have ____.
a. normalization
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b. integrity
c. information
d. profits
3 6
6 out of 20
6. ____ data is also called Boolean data.
a. AutoNumber
b. Yes/No
c. Hyperlink
d. Numeric
15 11
7 out of 20
7. A program that generally has a more user-friendly interface than aDBMS is called a ____.
a. front end
b. repository
c. back end
d. form
27 20
8 out of 20
8. The ____ creates and maintains the data dictionary.
a. database analyst
b. data modeler
c. database administrator
d. data processor
49 39
9 out of 20
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9. A Web database usually resides on a ____.
a. backbone
b. database client
c. database server
d. tuple
46 36
10 out of 20
10. Validity checks are also called ____.
a. queries
b. validation rules
c. relations
d. data models
20 45
11 out of 20
11. Data warehouses often use a process called ____ to find patternsand relationships among data.
a. data mining
b. normalization
c. query by example (QBE)
d. data modeling
45 35
12 out of 20
12. A(n) ____ stores data in dimensions.
a. object-oriented database
b. relational database
c. object-relational database
d. multidimensional database
43 33
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13 out of 20
13. A ____ contains text, graphics, video, and sound.
a. hypermedia database
b. multimedia database
c. Web database
d. groupware database
42 32
14 out of 20
14. A ____ analyzes entered data to help ensure that it is correct.
a. file processing system
b. database approach
c. validity check
d. data dictionary
18 14
15 out of 20
15. A request for specific data from the database is called a ____.
a. form
b. query
c. log
d. before image
32 50
16 out of 20
16. ____ information is arranged to suit the needs and requirements ofthe decision maker.
a. Organized
b. Verifiable
c. Timely
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d. Useful
6 2
17 out of 20
17. A database uses a variety of characteristics, such as ____ and datatype, to define each field.
a. data size
b. key frequency
c. field frequency
d. field size
11 8
18 out of 20
18. A number or character that is appended to or inserted in a primarykey value is called a ____.
a. data type
b. key field
c. primary key
d. check digit24 17
19 out of 20
19. The field that uniquely identifies each record in a file is called a____.
a. composite key
b. check digit
c. primary key
d. validity check
16 10
20 out of 20
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20. Each field is uniquely identified by a ____.
a. data type
b. key field
c. field name
d. data file
1 out of 20
1. The user of a relational database refers to a file as a(n) ____.
a. table
b. attribute
c. column
d. relation
39 29
2 out of 20
2. A Web database usually resides on a ____.
a. backbone
b. database client
c. database server
d. tuple
46 36
3 out of 20
3. A(n) ____ is a copy of a record after changes have been made to it.
a. rollforward
b. before image
c. after image
d. rollback
36 26
4 out of 20
-
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4. ____ procedures include adding records to, modifying records in, anddeleting records from a file.
a. Data hierarchy
b. File maintenance
c. File Validation
d. Data normalization
17 13
5 out of 20
5. Each field is uniquely identified by a ____.
a. data type
b. key field
c. field name
d. data file
10 43
6 out of 20
6. A database analyst (DA) is also called a ____.
a. data modeler
b. database administrator
c. data manager
d. data processor
48 38
7 out of 20
7. Processed data is called ____.
a. software
b. input
c. information
d. communications
1 3
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8 out of 20
8. In a typical ____, each department or area within an organization hasits own set of files.
a. database approach
b. file management system
c. file processing system
d. database model
25 18
9 out of 20
9. ____ is a computing phrase that points out the accuracy of acomputer's output depends on the accuracy of the input.
a. Rubbish in, rubbish out (RIRO)
b. Garbage in, garbage out (GIGO)
c. Nonsense in, nonsense out (NINO)
d. Junk in, junk out (JIJO)
4 4
10 out of 20
10. ____ is a popular query language that allows users to manage,update, and retrieve data.
a. Sybase
b. SQL
c. DB2
d. D3
40 30
11 out of 20
11. ____ is a common data type.
a. Object-oriented
b. Relational
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c. Normalized
d. Date
13 12
12 out of 20
12. Access, manufactured by the Microsoft Corporation, exists inversions for ____.
a. personal computer, server, mainframe, mobile devices
b. personal computer, server, mainframe
c. personal computer, server, mobile devices
d. server, mainframe
28 49
13 out of 20
13. The field that uniquely identifies each record in a file is called a____.
a. composite key
b. check digit
c. primary key
d. validity check16 10
14 out of 20
14. ____ data is also called Boolean data.
a. AutoNumber
b. Yes/No
c. Hyperlink
d. Numeric
15 11
15 out of 20
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15. If the data fails a ____, the computer either should not allow theinvalid data to be entered, or it should display an error message thatinstructs the user to enter the data again.
a. key test
b. validity check
c. cyclic test
d. date check
19 46
16 out of 20
16. The role of coordinating the use of the database belongs to thedatabase ____ and administrators.
a. designers
b. users
c. owners
d. analysts
47 37
17 out of 20
17. In ____ companies, one person often is both the DA and DBA.
a. most
b. mid-sized
c. nearly all
d. small
50 40
18 out of 20
18. You use ____ to retrieve and maintain the data in a database.
a. report writers
b. forms
c. backups
d. data models
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34 24
19 out of 20
19. The ____ creates and maintains the data dictionary.
a. database analyst
b. data modeler
c. database administrator
d. data processor
49 39
20 out of 20
20. ____ reduce data entry errors and thus enhance the data's integrity.
a. Validity checks
b. Checksums
c. Cyclic tests
d. Redundancy checks