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OCR GCE Computing Unit 1 Flashcards | StudBud
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OCR GCE Computing Unit 1
OCR GCE Computing Unit 1
263 terms
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All of Unit 1
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Questions
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Answers
1
Which of these is included in CRUD?
Review
Read
Relational
Referential Integrity
2
Which of these is best suited to small, heavily supervised project?
Waterfall
RAD
Extreme
Spiral
3
What is not an advantage of client side processing?
Program is running locally, so should be faster
Initial validation is immediate
Reduces the load on the server
Data is protected from user interference
4
What are the contents of the MDR?
The result of the current instruction
The address of the next instruction/data
The data
The address of the current instruction
5
Which of these is a disadvantage of a flat file database?
data consistency
data independence
data integrity
data redundancy
6
Which part of the FDE cycle is when the type of addressing is identified?
Execute
Fetch
Decode
Combine
7
The ROM contains....?
The BIOS, Bootstrap and POST
The BIOS, Bootstrap and OS
The BIOS and OS
The OS
8
Convert this denary number, 0.4375, to norm FP, 8 bit man, 4 bit exp 2s comp:
1.01111E+11
11100001111
1.011E+11
10101000111
9
Which of these is NOT parallel processing?
Pipelining
Dual cache
Array processor
Multi-core processor
10
When adding data to a stack, you must first..?
Check that the stack is not full
Push data onto the stack
Delete redundant data
Access the stack
11
Which of these is a disadvantage of parallel processing?
Is faster than a single processor
Is not limited by the bus transfer rate (Vonn Neumann bottleneck)
Each data set must be independent
Can make maximum use of the CPU by pipelining
12
during an interrupt the current registers are stored in..
arrays
stacks
records
queues
13
Which of these describes Assembly?
Non platform specfic
A low level language with one-to-one relationship with machine code
Imperative language
A language that uses mnenomics and interpreters
14
An Interupt is...?
It stops the computer
Fixes the scheduling of programs
Generated to stop normal execution
Sets the priority
15
A form of lossless encoding is...?
Theasauruas encoding
ADEC 5 coding technique
Colour matching
Run length encoding
16
CISC architectures....
Many addressing modes are available
Take more cycles per instruction
fixed number of bytes
Uses more programming to operate
17
What is a foreign key?
A relationship
A primary key in another table
A link
The key to Lithuania?
18
What is the output for this circuit? A OR NOT A
A
B
1
0
19
Layering protocols allows....?
Protocols to be independent of each other
So that changes can be made to the Internet
To standardise all Internet traffic
To allows different transportation media to be used
20
What is the output for this circuit? A OR (NOT A AND B)
A OR B
1
A AND B
A
21
Which of these best describes pipelining?
Consecutive decoding as one is fetched and decoded
Concurrent execution when running parallel
As one instructed is executed the next is decoded, the next fetched
Polling
22
Which of these is NOT a scheduling algorithm?
Shortest remaining time
First come first serve
Efficient CPU use
System of priorities
23
Convert this denary number, 0.0625, to norm FP, 8 bit man, 4 bit exp 2s comp:
10000001101
10010011100
1001011010
1.00101E+11
24
Lossy compression....
Always loses data
May lose data
Is best for text
Never loses data
25
Which of these is not true..?
Downloading a CSS file can slow the webpage
JavaScript runs on the client side
Client side processing can be accessed by the user
Comipling HTML produces faster running object code
26
Which of these is NOT a feature of an array processor?
SIMD
Same instruction, simultaneously, multiple locations
Same calculation is very fast
Large use of RAM
27
Which of these is NOT included in CRUD?
Review
Update
Delete
Create
28
Convert 127.125 to fixed point binary decimal
111111.101
1111111.001
10010100.1
10111111.11
29
Which of these can involve two programmers coding at the same time?
Extreme
Spiral
Waterfall
RAD
30
Which of these is NOT a feature of parallel processing?
Process split into tasks
Independent processors work on the same program
Controlled by complex OS
Efficient processing
31
Which of these devices is best suited to gathering the answers to a multiple guess exam?
Scanner
OCR
Digital camera
OMR
32
Which of these is not a database view?
Physical view
Internal View
User view
Logical View
33
Run length encoding is always an efficient way of compression...
if the text is in latin
when compressing English text
Using circular indexing techniques
when compressing an image that has lots of pixels of the same colour
34
If the data in the MDR is LDA where is it placed next?
Accumulator
Program counter
Current Instruction Register
Memory Data Register
35
Which of these development cycles is best suited to large scale projects?
Spiral
Extreme
Waterfall
RAD
36
Cascaiding Style Sheets...?
Determine how good a website is
Structures websites and processing
Determine the layout and formatting for a website
Work on the server side
37
The contents found at the memory address are placed here?
Current Instruction Register
Accumulator
Program counter
Memory Data Register
38
Convert this denary number, -37, to 8 bit binary 2s compliment:
1010100
100101
1001001
11011011
39
After the ALU has completed its command the result is placed in the....
MDR
ACCUMULATOR
MAR
PC
40
Symmetric encryption....
Uses a shared key
Uses a public and private key
Codes data
Uses non-symmetric coding
41
Which of these defines derived class?
A single bit of data within a class
A program routine contained within an object
A class that inherits attibutes or methods from another class
The process of creating an actual named instance of a class
42
Which part of the FDE cycle is when the instruction is decoded?
Decode
Fetch
Combine
Execute
43
How is an interrupt detected?
Compares priorities
The signal is sent from a device or software
Interrupt register is checked
At the end of the cycle
44
Convert this hexidecimal number to binary, AE
10101110
0
11101010
10010010
45
Why do we compress files...?
To make them smaller
To reduce transmission time
To speed up files
To zip them up
46
RISC is...
Reduced index set computing
Recycling Intergarated Sensors Control
Risk integrating set computing
Reduced instruction set computing
47
What is a WAN?
A network in a local town
A network spanning several geographical areas
A network in one geographical area
A network that uses switches
48
If a hash function creates a duplicate hash, this is called a...?
Termination
Encryption
Salt
Collision
49
An Interrupt can be generated by?
Serial file
Pressing a key
Turning on the computer
Writing an email
50
Why does a computer need secondary storage?
To backup data
To allow the CPU to change data
To save files and software for future reference
When RAM is full
51
The most robust form of secondary storage is...?
A flash drive
A CD ROM
The cloud
A hard disk drive
52
Which of these is NOT an adavantage of client side processing?
Once initially downloaded a cached version can be used
Initial validation is immediate
Reduces the load on the server
Users can change the code
53
CISC architectures do NOT have....
many instructions are available
many addressing modes are available
an instruction performs a simple task
a single register set
54
As one instruction is being executed, the next is being decoded and the one after that is being fetched
Multi Core
Pipelining
Parallel
Over clocking
55
Hashing is used for.....
To make sure passwords can't be seen
To hide data
Coding data
To associate an address with a username and password
56
What is meant by referential integrity?
All foriegn keys have an associated primary key
Reduces data redundancy
Enforces integrity referentially
All references have a key
57
Isolation is...?
Change is complete, or not at all
Takes the database from one state to another
Records must be locked
Change must be permanent
58
Which of these is not necessary for file management?
Protect processes from each other
Deal with allocation whilst paging
Protect memory
Enable memory to be shared
59
CISC is...
Complex instruction set computing
single addressing mode
Computer intergrated systems circuitry
Complex index set computing
60
Which of these describes inheritance?
Specialised overloading, data may be treated diferently
All of the objects attributes are hidden
A single bit of data within a class
A derived class that shares the attirbutes and methods of the super class
61
Which of these stores the address of the next instruction to be fetched?
Program counter
Memory Data Register
Accumulator
Current Instruction Register
62
What is the output for this circuit? A+0
0
1
A
B
63
Which of these storage devices is magnetic?
SSD
Hard drive
CD ROM
DVD
64
Which of these defines an object?
AN instance of a class
A single bit of data within a class
The process of creating an actual named instance of a class
All of the objects attributes are hidden
65
Interrupts are stored in...
records
stacks
arrays
queues
66
Which method of SDLC is best suited for a small project that needs careful supervision?
Spiral
Waterfall
Extreme
RAD
67
RISC architectures....
Use less programming to operate
Have more complex hardware
Have multiple instructions available
Take one cycle per instruction
68
Which of these is NOT and advantage of a static data structure?
Easier to check for overflow
Allows random access
Wastes space when only partially used
Easier to program
69
Which of these is NOT a maintenance technique
Perfective
Corrective
Directive
Adaptive
70
Which of these is NOT a state of a job
Ready
Blocked
Running
Steady
71
Which part of the FDE cycle is when the instruction is performed?
Combine
Decode
Fetch
Execute
72
What is this binary number in denary 01001001?
73
41
161
-73
73
Which of these is NOT an advantage of magnetic storage?
Uses flash memory
Has high speed compared to CD ROM
Cheaper than SSD per GB
Theoretically a longer life than SSD
74
The contents of the registers are held in what type of data sturcture during an interrupt?
Array
Queue
Stack
List
75
Which method of SDLC is best suited for a large project that is high risk?
Extreme
Waterfall
Spiral
RAD
76
Which of these do you NOT need for a network?
Switch
Network Interface Card
Printer
Router
77
Convert -19.5 into normalised fp, using a 8 but man and a 4 bit exp 2's comp
1.00101E+11
1.011E+11
1.01101E+11
11001101001
78
Utility program that loads jobs & adjusts addresses is...
The Boot Strap
The Loader
The BIOS
The linker
79
Add these binary numbers together 1011101 + 0001100
1101001
101101
1110001
1001000
80
Which of these is best suited a project without clear outcomes?
Spiral
Agile
Project
Waterfall
81
Which of these is not a relationship type?
Many to many
one to one
many to one
few to one
82
Which of these is a low level language?
Assembly
Procedural
Functional
Opcodes
83
Which os these best describes pre-order traversal
Travers left, visit node, visit right sub node
Vist left, visit right sub tree
Travers left, visit node, travers right, visit node
Visit node, travers left, visit, travers right, visit
84
Which of these runs on the server side?
CSS
PHP
HTML
JavaScript
85
What is a secondary key?
A backup primary key
Controls access
Used in flat file databases
Used for fast access when searching on this attribute
86
Which system is designed to run with one user?
Multi-user
Multi-tasking
Stand-alone
Batch
87
Which of these describes polymorphism?
A single bit of data within a class
All of the objects attributes are hidden
A program routine contained within an object
Specialised overloading, data may be treated differently
88
Which of these is NOT a sensor?
Ph
Object
Pressure
Depth
89
The command for the topmost heading in HTML is..?
Empty choice
Empty choice
Empty choice
Empty choice
90
What are the contents of the PC?
The address of the next instruction/data
The address of the current instruction
The data
The result of the current instruction
91
White=box testing is...?
The code is followed to consider all possible outcomes of a system
Testing undertaken by the software developer
Testing got make sure that the system matches the user requirements
The code is ignored, functionality is tested
92
Which best describes an imperative language. A high level language.....?
that executes each command sequentially
that is concerned with the result not method
in which code can be blocked as procedures & functions
that orders data
93
Which of these is NOT a programming paradigm?
Declarative
Functional
Procedural
Object Code
94
Which is not an advantage of a relational database?
inconsistency reduced
programs need altering when new tables are created
duplication of data is minimised
volume of data minimised
95
Show how a computer calculates 67 - 16
01000011 + 11110000 = 00110011
10111101 + 00010000 = 00110011
01000011 - 00010000 = 00110011
01000011 + 00010000 = 00110011
96
Which lifecycle cannot respond easily to changes in the requirements?
Extreme
Waterfall
Agile
Spiral
97
Which os these best describes in-order traversal
Travers left, visit node, travers right, visit node
Travers left, visit node, visit right sub node
Visit node, travers left, visit, travers right, visit
Vist left, visit right sub tree
98
Convert this denary number, -14, to 8 bit binary 2s compliment:
1010100
1001001
1110
11110010
99
Which of these describes a high level language?
Designed to reflect the natural language of the programmer
A language that uses mnenomics and interpreters
Non platform specfic
A low level language with one-to-one relationship with machine code
100
Which of these is NOT part of a database?
sequences
attribute
tables
record
101
Which of these is a function of an operating system?
Networking
Utilities tasks
Transfers data
Emails
102
Interrupts are held in what type of data structure?
List
Queue
Array
Stack
103
The transport layer of the TCP/IP stack...
Allows data to be transmitted over any hardware
Establishes and terminates communication between network entities
Provided transmission from one router to another
Produces data that can be read by end applications
104
Which of these defines Overriding?
A single bit of data within a class
The process of creating an actual named instance of a class
All of the objects attributes are hidden
A method in a subclass that has the same name as a superclass
105
Which of these storage devices uses flash memory?
CD ROM
SSD
Hard drive
DVD
106
What buses are used during the Fetch in the CPU?
The data and control bus
The data, control and address bus
The data and address bus
The Address and control bus
107
The command for a new paragraph in HTML is..?
Empty choice
Empty choice
Empty choice
Empty choice
108
Protocols are....?
an agreed set of rules for communication between two computers
A set of guidelines
produced in layers so that they can be layered
Good for communication
109
Which of these devices is best suited to gathering the answers to a multiple guess exam?
Scanner
OCR
OMR
Digital camera
110
Why are many to many relationships not allowed?
They are a pain
They are against the rules of 3NF
They cause redundant data
They are difficult to program
111
Which of these is NOT an input device?
Data stick
Puff suck switch
Mouse
Foot mouse
112
Consistency is...?
Records must be locked
Change must be permanent
Change is complete, or not at all
Takes the database from one constant state to another
113
An advantage of embedding CSS in an HTML file is...?
Caching the CSS can allow for faster download speeds
Rewriting the CSS for each webpage is time consuming
CSS is a dynamic language that renews itself
The webpage download a new version of the CSS each time
114
Symmetric encryption means that...
The key is kept public
Keys are kept secret
They key can be intercepted
That keys are swapped between users
115
Harvard architecture...
Is able to co-process faster
Stores the data and instructions in the same memory
Stores the data and instructions in different memory
Has one bus in it
116
Which part of the FDE cycle is when the address increments the PC
Decode
Combine
Fetch
Execute
117
The Internet layer of the TCP/IP stack...
Produces data that can be read by end applications
Allows data to be transmitted over any hardware
Establishes and terminates communication between network entities
Provided transmission from one router to another
118
Convert this denary number, 37, to 8 bit binary 2s compliment:
1110010
100101
11010100
10001110
119
Beta testing is...?
Testing undertaken by volunteers, not members of the developers
Testing undertaken by the software developer
The code is ignored, functionality is tested
The code is followed to consider all possible outcomes of a system
120
When removing data from a queue, you must first...?
Make sure that it is a circular queue
Dequeue data
Make sure that the queue is not empty
Enqueue data
121
Primary memory does NOT include...?
The hard drive
Virtual memory
The Cache
RAM
122
The application layer of the TCP/IP stack...
Provided transmission from one router to another
Establishes and terminates communication between network entities
Allows data to be transmitted over any hardware
Produces data that can be read by end applications
123
Where is Cache memory usually located?
On the harddrive
As part of the RAM
On the motherboard
In the CPU
124
If a binary tree is created for: J, A, C, H, L, what is the first piece of data visited in a pre-order traversal?
H
C
J
A
125
A hash function returns....?
An encrypted value
Fixed size data
The address in memory
The password and username
126
Secondary storage provides...?
A place to edit data
Permanent storage for data
More memory
A place to store the boot strap
127
Alpha testing is...?
The code is ignored, functionality is tested
Testing undertaken by the software developer
Testing got make sure that the system matches the user requirements
The code is followed to consider all possible outcomes of a system
128
Which of these shows the organisation of the database elements (e.g. tables, queries)?
Physical view
Logical View
Internal View
User view
129
To transport a digital photograph, which device would you recommend?
A flash drive/data pen
A hard disk drive
A DVD
Magnetic Tape
130
Which of these runs on the server side?
CSS
HTML
SQL
JavaScript
131
A processor that is able to operate on multiple pieces of data SIMULTANEOUSLY is..?
Scalar
Contiguous
Vector
Harvard
132
Which of these phases is not associated with the SDLC?
Analysis
Results
Testing
Development
133
Convert this denary number, 37, to 8 bit binary 2s compliment:
1001001
1010100
10010110
100101
134
Which of these shows the actual data (in hex/binary)?
User view
Physical view
Internal View
Logical View
135
Sensors are used to measure...?
Digital signals
Step wave signals
Signals from the real world
Analogue signals
136
Which of these start and end a table row in HTML?
Empty choice
Empty choice
Empty choice
Empty choice
137
Increase the intensity of this RGB colour by 1, AF13CD
AF14CD
AF13CE
B014CE
C024DE
138
If L is 01001100 then what is P
10011010
1001110
1010000
1001101
139
Convert this denary number, -0.625, to norm FP, 8 bit man, 4 bit exp 2s comp:
1.011E+11
10101000111
1.01111E+11
1.1001E+11
140
What is the World Wide Web?
Interconnected networks
Large programs
The links between data
Linked web pages
141
Hashing is used for....
Storing and accessing data in a database
To code data
To make sure data cant be seen
To hide passwords
142
The CSS for an identifier in CSS is...?
Empty choice
You dont get identifiers in CSS
.infobox{}
infobox{}
143
What is meant by a relational database?
a database with SQL
a database with only one table
a database with more than one linked tables
a database in third normal form
144
Which of these is NOT a function of an operating system?
Provides security
Provide a user interface
Disk management
Operates resources
145
The dampening factor....?
Reduces the effect of the PR(Tn)/C(Tn)
Ranks the pages according to the number of outgoing hyperlinks
Determines the pagerank of a webpage
Means that too many clicks reduces your pagerank
146
Convert this denary number, -67.5, to norm FP, 10 bit man, 4 bit exp 2s comp:
1.1001E+13
1.00101E+11
1.01111E+13
1.0101E+12
147
RISC architectures do NOT have...
each instruction performs a complex task
a limited number of instructions is available
commands may take a number of machine cycles
multiple addressing modes
148
Convert this denary number, 15.5, to norm FP, 8 bit man, 4 bit exp 2's comp
10101001110
1.0001E+11
1001011010
11111000100
149
GPUs are NOT often used for....
Audio processing
Machine learning
Modelling physical systems
Controlling the RAM
150
Which of these is NOT a valid IP address?
176.188.23.78
192.168.0.1
255.255.0.0
378.89.200.1
151
Which of these is NOT a feature of a co-processor
allows concurrent processing
improves speed
An additional processor
A large processor
152
Stores current piece of data ready for add etc?
Accumulator
Program counter
Memory Data Register
Current Instruction Register
153
Durability is...?
Records must be locked
Takes the database from one state to another
Change must be permanent
Change is complete, or not at all
154
Subtract these binary numbers 1010000 - 0001111
1011111
1000001
1101001
1010000
155
To change the background colour in CSS to blue is...?
background-colour: blue;
background-color: FF00FF;
background-color: 0000FF;
background-colour: 0000FF;
156
What is the World Wide Web?
The links between data
Interconnected networks
Large programs
Linked web pages
157
Which of these defines class?
A blueprint for an object
All of the objects attributes are hidden
A program routine contained within an object
The process of creating an actual named instance of a class
158
What is the output for this circuit? A+1
0
A
B
1
159
Which of these is not used in email communication
HTTP
SMTP
IMAP
POP3
160
What is an entity?
A person/item/action that needs to be modelled
A keyword for defining a new object
An action
Something that exists in itself
161
Which of these is NOT an feature of an operating system?
Resource management
Interrupt management
File storage
Error reporting
162
What is the output for this circuit? A.1
0
A
1
B
163
The OS is stored in the...?
Cache
Hard drive
ROM
RAM
164
Which of these is NOT an interrupt type?
I/O interrupt
Timer interrupt
Hardware error
High interrupt
165
The HTML code for an numbered list is...?
Empty choice
Empty choice
Empty choice
Empty choice
166
Which of these is NOT a quadrant in the spiral model?
Implementation
Evaluation
Documentation
Analysis/risk assessment
167
What is the output for this circuit? A.0
1
B
0
A
168
The feasibility document returns the viability of a project using TELOS. What is TELOS?
Technical, environment, legislation, operational, timeline
Timeline, essential, legitimate, organisational, schedule
Transparent, economic, legitimate, operational, scheme
Technical, economic, legal, operational, scheduling
169
Which of these is NOT an input device?
Puff suck switch
Mouse
Data stick
Foot mouse
170
Which of these is NOT a stage in the waterfall cycle?
Prototyping
Installation
Design
Investigation
171
What is the output for this circuit? A AND NOT A
A
1
0
B
172
A hashing algorithm....?
Produces a fixed length string
Produces a hashed entity
Is used to encrypt data
Is used for passwords
173
Which system is designed to allow several users to access resources at the same time?
Multi-tasking
Multi-user
Stand-alone
Batch
174
If a binary tree is created for: J, A, C, H, L, what is the first piece of data visited in an in-order traversal?
C
J
A
H
175
As well as graphics, GPUs are often used for:
To render graphics
Creating data
Uploading websites
Machine learning
176
Lots of instructions applied to lots of data is known as?
SISD
MINSC
MIMD
SIMD
177
Subtract this number 01011000010 (7 bit man & 4 bit exp) from 0111001000101 (9 bit man & 4 bit exp)
10101110
1.001E+11
1001001
11001110
178
One instruction that is applied to lots of data is known as?
SISD
MIMD
SIMD
MINSC
179
If the number of bits increases from 8 to 16 in the MAR, what is the consequence?
There is faster processing
The cache must get bigger
The number of memory addresses increases
The chip is better
180
An inefficient hashing algorithm will..
Will cost money
Cause encrypted messages to have errors
Cause collisions
Allow you to find the password
181
What are the contents of the MAR?
The result of the current instruction
The address of the next instruction/data
The data
The address of the current instruction
182
One command applied to one piece of data is known as?
MINSC
MIMD
SISD
SIMD
183
RISC are often used in...
Because its better
For graphics production
Complex systems
For mobile devices
184
Which of these do you NOT need for a network?
Network Interface Card
Router
Server
Switch
185
Which of these is not a process state?
Running
Ready
Blocked
Current
186
Which of these is NOT an output device?
Plotter
Warning light
Siren
Portable hard drive
187
Which spreadsheet tools can read this sheet and export to xlsx format?
Numbers
Excel
Google Docs
LibreOffice
188
Which method of SDLC is best suited for a project that does not have a clear outcome?
Evolutionary
Spiral
RAD
Waterfall
189
Which of these defines method?
A single bit of data within a class
The process of creating an actual named instance of a class
All of the objects attributes are hidden
A program routine contained within an object
190
Which os these best describes post-order traversal
Visit node, travers left, visit, travers right, visit
Vist left, visit right sub tree
Travers left, visit node, travers right, visit node
Travers left, visit node, visit right sub node
191
When putting data into a queue, you must first...?
Make sure that the queue is not full
Create a queue
Enqueue data
Dequeue data
192
Lossless compression
Never loses data
May lose data
Always loses data
Is best for sounds
193
Which is these os a static data structure?
A queue
A variable
A stack
An Array
194
Asymmetric encryption.....
Uses a public and private key
Uses a shared key
Codes data
Uses non-symmetric coding
195
Which part of the FDE cycle is when the address is copied from PC to MDR
Fetch
Combine
Execute
Decode
196
Which of these SQL commands edits data?
DELETE
INSERT
SELECT
UPDATE
197
If the data in the MDR is the value 01011 where is it placed next?
Current Instruction Register
Memory Data Register
Accumulator
Program counter
198
Which part of the FDE cycle is when the instruction/data is loaded into the MDR?
Execute
Decode
Fetch
Combine
199
.... is copied from the PC?
Memory Data Register
Accumulator
The address of the current instruction
Current Instruction Register
200
Which of these is a scheduling algorithm?
First in first out
Last in First Out
Fastest First
Round Robin
201
The link layer of the TCP/IP stack...
Establishes and terminates communication between network entities
Produces data that can be read by end applications
Provided transmission from one router to another
Allows data to be transmitted over any hardware
202
Which of these is NOT an output device?
Portable hard drive
Warning light
Plotter
Siren
203
Which of these defines Instantiation?
A single bit of data within a class
The process of creating an actual named instance of a class
All of the objects attributes are hidden
A program routine contained within an object
204
As one instruction is being executed, the next is being decoded and the one after that is being fetched
Multi Core
Parallel
Over clocking
Pipelining
205
A list item, in HTML is...?
Empty choice
Empty choice
Empty choice
Empty choice
206
Paging and Segmentation differ...
stored on backing store
ways of partitioning memory
in consistent size
assigned to memory when needed
207
Which of these defines encapsulation?
All of the objects attributes are hidden
A single bit of data within a class
The process of creating an actual named instance of a class
A program routine contained within an object
208
Acceptance testing is...?
The code is followed to consider all possible outcomes of a system
Testing undertaken by the software developer
The code is ignored, functionality is tested
Testing got make sure that the system matches the user requirements
209
Which of these is a function of an operating system?
Buffering data
Financial feasibility
Security (p/w & u/n)
directs the ROM
210
Which of these storage devices is optical?
SSD
Pen drive
Hard drive
CD ROM
211
An entity is...?
A real world thing, modelled in a database
A person or item, modelled as a table
An object
A thing
212
Which os these is a dynamic data structure?
An array
A binary tree
A constant
A tuple
213
Which of these relationships should be avoided?
one to one
Marrying your sister
Many to many
many to one
214
Which system is designed to allow time slices?
Batch
Multi-tasking
Stand-alone
Multi-user
215
Lossless encoding can result in larger files..?
True, if the encoding is not good
True and false, lossless might give bigger files
True, if the dictionary is not very efficient
False, compression always reduces file size
216
After an interrupt...
Registers are dumped
Check for further interrputs
MDA is reset
Accumulator begins
217
What is not an advantage of a relational database?
data integrity
data redundancy
data independence
data consistency
218
What is an advantage of server side processing?
Data is protected from user interference
Reduces the load on the server
Initial validation is immediate
Program is running locally, so should be faster
219
Which of these is an advantage of a flat file database?
quick to create
data integrity
can be moved easily
data consistency
220
The ROM....?
Is volatile memory
Can never be changed
Can be flashed
Can be changed when necessary
221
Which of these defines attribute?
The process of creating an actual named instance of a class
A program routine contained within an object
All of the objects attributes are hidden
A single piece of data within a class
222
Which of these is NOT a common protocol?
HTTP
FTP
SMTP
FIP
223
Which of these is 1NF?
non-key attributes are dependent on the primary key
A table with no repetition
A report of errors
A table with no repeating groups
224
Which of these shows the interface ("front end")?
Physical view
Internal View
Logical View
User view
225
Which of these involves the planning game?
Waterfall
Spiral
Extreme
RAD
226
Black-box testing is...?
Testing undertaken by the software developer
Testing got make sure that the system matches the user requirements
The code is followed to consider all possible outcomes of a system
The code is ignored, functionality is tested
227
Which of these can have a user working with the development team for the whole process?
Waterfall
Spiral
RAD
Extreme
228
Concurrent processing means...?
Multiple processors execute instructions simultaneously
One process after the other
All processing happens at once
Contiguous processing
229
Some common uses of binary trees include:
The consolidation of data
Reverse polish notation
Fast access to data
Reverse portugese notation
230
Which of these start and end a table cell in HTML?
Empty choice
Empty choice
Empty choice
Empty choice
231
What is the output for this circuit? A AND (B OR A)
A AND B
A OR B
A
1
232
What is a LAN?
A network spanning several geographical areas
A network in a local town
A network in one geographical area
A network that rents/shares connections with other companies
233
Utility program that attaches libraries at run time is...
The BIOS
The Boot Strap
The linker
The Loader
234
Which of these is a function of an operating system?
I/O management
Transfers data
Emails
Networking
235
Represent -183 in 9 bit twos compliment
101001001
110110111
10110110
10011000
236
A processor that is able to operate on multiple pieces of data SIMULTANEOUSLY is..?
Scalar
Array
Harvard
Contiguous
237
A poor hash algorithm causes...?
Vulnerable security structures
Collisions
Lack of salting
Fast data access
238
Convert this denary number, -130, to 8 bit binary 2s compliment:
10010110
Too few bits
100101
101111110
239
is...?
The wrong syntax
Inline CSS
Server side processing
All HTML code
240
Which of these is a function of an operating system?
Accessibility
Memory mangement
Emails
Transfers data
241
Which of these is a feature of an operating system?
File management
Device allocation
Memory reporting
User Interface
242
A change in a database is....?
Editing
Transaction
Transition
Record
243
Which of these is NOT an advantage of networking computers?
Shared resources such as printers
Better communication
Improved security
Connected computers are more efficient
244
Atomicity is...?
Takes the database from one state to another
Change is complete, or not at all
Records must be locked
Change must be permanent
245
What is an advantage of Pipelining?
Speeds up the RAM
Increased execution of program
Less time wasted
More efficient
246
If a binary tree is created for: J, A, C, H, L, what is the first piece of data visited in a post-order traversal?
C
J
A
H
247
A form of lossless encoding is...?
Run length encoding
ADEC 5 coding technique
Theasuraus encoding
Colour matching
248
Time slicing is...?
Directs the CPU
Allocates the amount of time for a process
Setting up which program runs when
Allows programs to run in order
249
The CSS code for a class is...?
.infobox{}
You dont get classes in CSS
infobox{}
Empty choice
250
What is a primary key?
one of a kind
a unique record
an index
a unique identifier
251
Which of these is NOT a function of an operating system?
Transfers data
Access to peripherals
Managing application software
Utilities tasks
252
FIFO stands for?
Final input first output
First in final out
First in first out
frequent in frequent out
253
Virtual storage is....?
The use of virtual servers
The use of of site servers to store data
Virtualising your storage
The use of someone else's servers
254
Common uses of a hash algorithms are:
Lossy compression
For fast access to data
To code data
Storing usernames and passwords
255
A value that cannot be changed during run time is..?
An array
A constant
A linked list
A variable
256
What is the purpose of a switch?
To connect a network to the Internet
directs traffic to a particular station
To make the network more efficient
broadcast data to all stations on a network
257
Which of these is NOT RAD?
Prototype is created
Feasibility study
Prototype is evaluated
Changes are made, process repeated
258
Hashing is.....
Scrambling data
The process of calculating a numeric value from one or more data items
Reording data so that it is coded
Adding salt
259
When popping data from a stack, you must first....?
Push data onto the stack
Make sure that the stack is not empty
Reorder the stack
Allocate data to the stack
260
Which of these SQL commands removes data?
DELETE
SELECT
INSERT
UPDATE
261
Which of these SQL commands chooses data?
INSERT
UPDATE
SELECT
DELETE
262
Which best describes a declarative language. A high level language.....?
that is concerned with the result not method
in which code can be blocked as procedures & functions
that orders data
that executes each command sequentially
263
Von Neumann architecture....
Has multiple buses in it
Stores the data and instructions in the same memory
Stores the data and instructions in different memory
Is able to pipeline faster
