O level north west regional mock gce 2022 computer science 1

O level north west regional mock gce 2022 computer science 1

O level north west regional mock gce 2022 computer science 1

A is a structured English-like
representation of an algorithm
A. Mnemonics
It. Pseudocode
C. Flowchart
D. Boolean
2. Which of the following malliematical
statements is TRUE?
I KB -8Bytes
It. I MB~1000Bytes
C. I KB I 0241tytes
IMB- 1024 Bytes
The acronym WiFi means?
A. Wireless connection
It. Wireless Fibre
C. Wireless Fidelity
0. Wireless network

is a private network that
connects people within an organization without
further access to authorized outsiders.
A. internet
It. ethernet
C. extranet
O. _ intranet
5. Communication channel that is bidirectional
and communicate one at a time.
A. Simplex channel
It. Half-duplex channel
C . Serial Transmission
D. Full Duplex
6. Which of the following does NOT represent a
coding scheme?
AT UNICODE
8. BCD
C. ASK!
I). ASCII
7. Which of the following is an example of a
volatile memory?
A. ROM
It. PROM
C. EPROM
D. RAM
8. A Held which uniquely identifies a record in a
database table is referred to as
A. Secondary key
It. Foreign key
C. Primary key
IT Non key fields
9. The amount of data a communication channel
can transmit dining a fixed period of time is
called
4. fhe

Input Output
0 0 ft
ft t
1 0
I I 0
A. AND
It. OR
C. XOR
I). NOR
16. The act of protecting data by converting it to
an understandable format by means of an
algorithm so that only the intended recipient
could understand it is known us:
A. Compression
It. Decryption
C. Encryption
l). Encapsulation

17. Copying and selling others software, withouT
their authorization is
A. Software shareware
It. Software liveware
C. Software privacy
1). Software piracy
A. Broadband
It. Frequency modulation
C. Bandwidth
0. Data Densityr
The process of restarting a computer which is
already in operation is called

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