E-Learning Week 1

Question 1

What is the definition of Infocomm Technology (ICT)?

Answer 1

The COLLECTIONS of TECHNOLOGIES work together to allow people and organizations to interact in the digital world

Question 2

According to the National Cyber Security Masterplan 2018: What are the 3 things Infocomm Security aim to do?

Answer 2

1. Enhance the security and resilience of critical infocomm infrastructure
2. Increase efforts to promote the adoption of appropriate infocomm security measures among individuals and businesses.
3. Grow Singapore’s pool of infocomm security experts

Question 3

What is Singapore’s Critical Information Infrastructure (CII) ?

Answer 3

Critical Information Infrastructure is a computer/computer system located wholly or partly in Singapore, necessary for the continuous delivery of an essential service and the loss or compromise of the computer/computer system will have a debilitating effect on the availability of the essential service in Singapore.

Question 4

What are the 11 sectors within the Critical Information Infrastructure (CII)?

Answer 4

1) Energy
2) Water
3) Banking & Finance
4) Healthcare
5-7)Transport
- Land
- Maritime
- Aviation
8) Government
9) Infocomm
10) Media
11) Security & Emergency Services

Question 5

What is internet?

Answer 5

The Internet is a NETWORK OF COMPUTER NETWORKS connected together to support IT services

Example: email, voice call and data transfer services.

Question 6

Is the internet controlled by anyone?

Answer 6

No, the internet belongs to everyone and everyone can connect to it as long as they follow the set of rules established by the internet authority.

Question 7

What are the 5 connected smart devices?

Answer 7

Smart building, smart home, smart transport, smart industry

Question 8

What are the 7 layers of OSI Model?

Answer 8

1) Physical Layer
2) Data Link Layer
3) Network Layer
4) Transport Layer
5) Session Layer
6) Presentation Layer
7) Application Layer

Question 9

What is the definition of Physical Layer of OSI Model?

Answer 9

Transmits raw bit stream over the physical medium

Question 10

What is the definition of Data Link Layer of OSI Model?

Answer 10

Defines the format of data on the network

Question 11

What is the definition of Network Layer of OSI Model?

Answer 11

Decides which physical path the data will take

Question 12

What is the definition of Transport Layer of OSI Model?

Answer 12

Transmits data using transmission protocols including TCP and UDP

Question 13

What is TCP and UDP

Answer 13

Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) are the most widely used Internet protocols. TCP is a connection-oriented protocol, which means, once a connection is established, data can be sent bidirectional. UDP, on the other hand, is a simpler, connectionless Internet protocol.

TCP is more reliable, while UDP prioritizes speed and efficiency.

Question 14

What is the definition of Session Layer of OSI Model?

Answer 14

Maintains connections and is responsible for controlling ports and sessions

Question 15

What is the definition of Presentation Layer of OSI Model?

Answer 15

Ensures that data is in a usable format and is where data encryption occurs

Question 16

What is the definition of Application Layer of OSI Model?

Answer 16

Human-computer interaction layer, where applications can access the network services

Question 17

What are the 3 different layers in which are used by smart devices?

Answer 17

1) Application Layer
2) Network Layer
3) Perception Layer/Smart devices

Question 18

What technologies are categorised under the Application layer?

Answer 18

Internet of Things (IoT) applications

Question 19

What technologies are categorised under the Network Layer?

Answer 19

Wi-fi, Ethernet, Long-term Evolution (LTE)

Question 20

What technologies are categorised under the Perception layer/ Smart devices?

Answer 20

Sensors

Question 21

What are 5 common internet vulnerabilities?

Answer 21

1) Infection of IT systems with malware
2) Identity Theft
3) Hacking – Unauthorised access
4) Phishing
5) Denial-of-service attacks

Question 22

What are consequences of security attacks?

Answer 22

1) Loss of data
2) System Hijacking (could include lost of account and lost of use)

Question 23

What does the term ‘Vulnerability’ mean in Infocomm Security?

Answer 23

‘Vulnerability’ generally refers to situations that an un-suspecting individual could be exposed to the possibility of being attacked or harmed when using the internet services

Question 24

9 Most important applications of IoT

Answer 24

1) Wearables
2) Health
3) Traffic monitoring
4) Fleet management
5) Agriculture
6) Hospitality
7) Smart grid and energy saving
8) Water supply
9) Maintenance management

Question 25

What is the Service Set Identifier (SSID) on your Wi-Fi?

Answer 25

A service set identifier (SSID) is a sequence of characters that uniquely names a Wi-Fi network. An SSID is sometimes referred to as a network name. This name allows stations to connect to the desired network when multiple independent networks operate in the same physical area