1.1 The result of the expression 7 MOD 5 + 10 DIV 3:
A
B
C
D
1.1.2 A digital signature is used …
A
B
C
D
1.1.3 A Trojan virus is designed to …
A
B
C
D
1.1.4 A technique used to make electronic communication appear to originate from a legitimate source is known as …
A
B
C
D
1.1.5 To establish a relationship between two tables in a database, a link must be made from the …
A
B
C
D
1.2 Give ONE word/term for each of the following descriptions - NSC Information Technology - Question 1 - 2017 - Paper 2
Question 1
1.1 The result of the expression 7 MOD 5 + 10 DIV 3:
A
B
C
D
1.1.2 A digital signature is used …
A
B
C
D
1.1.3 A Trojan virus is designed to …
A
B
C
D
1.1.4 A tec... show full transcript
Worked Solution & Example Answer:1.1 The result of the expression 7 MOD 5 + 10 DIV 3:
A
B
C
D
1.1.2 A digital signature is used …
A
B
C
D
1.1.3 A Trojan virus is designed to …
A
B
C
D
1.1.4 A technique used to make electronic communication appear to originate from a legitimate source is known as …
A
B
C
D
1.1.5 To establish a relationship between two tables in a database, a link must be made from the …
A
B
C
D
1.2 Give ONE word/term for each of the following descriptions - NSC Information Technology - Question 1 - 2017 - Paper 2
Step 1
The result of the expression 7 MOD 5 + 10 DIV 3:
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Answer
To solve this, first evaluate the modulo and division: 7 MOD 5 = 2 and 10 DIV 3 = 3. Thus, the result is 2 + 3 = 5. The correct option is D.
Step 2
A digital signature is used …
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Answer
A digital signature is used to verify the authenticity and integrity of a message. The correct option is B.
Step 3
A Trojan virus is designed to …
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Answer
A Trojan virus is designed to gain access to the system and harm it under the guise of legitimate software. The correct option is B.
Step 4
A technique used to make electronic communication appear to originate from a legitimate source is known as …
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Answer
This technique is known as spoofing, which deceives users into believing the communication is from a trusted source. The correct option is B.
Step 5
To establish a relationship between two tables in a database, a link must be made from the …
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Answer
To establish a relationship, a primary key in one table must be linked to a foreign key in another table. The correct option is D.
Step 6
The amount of data an ISP allows a user to upload and download in a particular time period
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Answer
This is referred to as a CAP or Data bundle.
Step 7
A website that is regularly updated with news and events in chronological order
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Answer
This is known as a Blog or Weblog.
Step 8
A person who breaks into a system to steal data electronically or to make unauthorised changes to electronic data
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Answer
Such a person is referred to as a Cracker or Hacker.
Step 9
An Internet service that translates a domain name to an IP address, e.g. www.abcd.com translates to 169.150.100.123
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Answer
This service is known as DNS (Domain Name System).
Step 10
The protocol used for secure encrypted transfer of data on the Internet
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Answer
This protocol is HTTPS or SSL.
Step 11
The process whereby the existing firmware is wiped and replaced by an updated version
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Answer
This process is known as Flushing the ROM.
Step 12
An Internet-based alternative to text messaging, in which multimedia can be exchanged in real time via applications, such as WhatsApp
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Answer
This is often referred to as Instant messaging (IM).
Step 13
A common format for storing digital music by combining efficient compression techniques and good quality sound
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Answer
This format is typically MP3 (MPEG-1 Audio Layer 3).
Step 14
Gaining unauthorised access to and making use of a connection in an unsecured Wi-Fi network
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Answer
This practice is known as Piggybacking.
Step 15
The diagnostic testing that occurs once a computer is powered on.
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