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