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Network transmission media and Network Security

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33 slides

Alexey Krivetskiy

Fibre optics excel in high-speed internet, ideal for long distances. Security measures like strong authentication and firewalls are crucial to combat threats like malware and phishing.

Slides (33)

1 - Freestyle Wireless Transmission Media
2 - Freestyle
3 - Pick Answer Match Each Wireless Medium to Its Advantage

1. Microwave - High bandwidth over long distances
2. Radio - Covers broad area without line-of-sight
3. Satellite - Global connectivity
4. Light (Infrared) - Secure short-range communication
4 - Pick Answer What’s a Key Disadvantage of Satellite Transmission?

1. Only works indoors
2. Susceptible to weather interference
3. Low latency
4. Requires physical cables
5 - Freestyle Wired Transmission Media
6 - Freestyle
7 - Pick Answer Which Medium Suits Long-Distance, High-Speed Data?

1. Fibre Optic
2. Coaxial
3. Powerline
4. Twisted Pair
8 - Pick Answer Which feature makes fibre optic cables superior for high-speed internet?

1. Higher susceptibility to interference
2. Higher bandwidth capacity
3. Lower distance capabilities
4. Higher installation costs than copper
9 - Pick Answer Which condition primarily affects microwave transmission performance?

1. Type of connectors used
2. Length of network cables
3. Distance between antennas
4. Weather conditions
10 - Pick Answer What is a major disadvantage of using fibre optic cables for networking?

1. Heavier than copper cables
2. Higher installation costs
3. Requires frequent repairs
4. Uses more electrical power
11 - Pick Answer Which medium would be best for linking two data centers over 1 km apart?

1. Microwave transmission
2. Fibre optic cable
3. Twisted pair cable
4. Powerline networking
12 - Pick Answer Which factor should be considered when choosing between wired and wireless media?

1. Age of equipment
2. Environmental conditions
3. Type of network protocol
4. Number of users
13 - Pick Answer Which factor primarily influences the choice of powerline networking over cable installation?

1. Higher security standards
2. Cost savings on installation
3. Greater bandwidth capacity
4. Longer distances covered
14 - Pick Answer What is a key limitation of powerline networking compared to dedicated cabling?

1. Requires multiple cables to operate effectively
2. Provides unlimited bandwidth like fibre optics
3. Can operate without electrical outlets
4. Signal strength over long distances decreases
15 - Pick Answer Which characteristic of twisted pair cables enhances their performance by reducing interference?

1. Thinner insulation layer
2. Wires are twisted together
3. Lower cost materials
4. Use of shielded wires
16 - Pick Answer Which of the following statements about fibre optic cables is TRUE?

1. Fibre optic cables are significantly cheaper to install than copper cables.
2. Fibre optic cables can transmit data at speeds over 10 Gbps.
3. Fibre optic cables are immune to electromagnetic interference.
4. Fibre optic cables can carry electrical power.
5. Fibre optic cables are more flexible than copper cables.
17 - Freestyle Network Security Overview
18 - Freestyle
19 - Pick Answer Match Threats to Typical Solutions

1. Unauthorized access - User account controls
2. Phishing - User training & awareness
3. DoS - Traffic filtering & firewalls
4. Malware - Anti-malware software
20 - Freestyle
21 - Freestyle Firewall Hardware & Software
22 - Freestyle
23 - Pick Answer Which Method Verifies User Identity Twice?

1. Password only
2. Two-factor authentication
3. Biometric scan
4. Open network access
24 - Pick Answer Categorise Security Measures
25 - Freestyle
26 - Pick Answer Scenario: A public Wi-Fi network enabled malware infection and data breach at a branch office. Which combination of security measures would you implement to prevent this?

Deploy a firewall, install anti-malware, enforce strong user access controls (profiles/rights), implement encryption, and enable authentication (e.g., two-factor).
27 - Image Choice Which authentication method do you find most user-friendly?

1. Biometrics
2. Two-factor authentication
3. Password only
28 - Pick Answer Case Study: A retail company relies solely on password-based logins and has suffered multiple unauthorized access incidents. What improvements would you recommend to enhance their login process?

Implement two-factor authentication, enforce strong password policies, add biometric options, regularly review user access rights, and encrypt login data.
29 - Pick Answer Match Security Measures to Their Types

1. Anti-malware software - Software control
2. Firewall appliance - Hardware control
3. Physical door locks - Physical control
4. Two-factor authentication - Authentication type
30 - Pick Answer Match Authentication Types to Examples

1. Biometrics - Fingerprint scan
2. Two-factor - Password + SMS code
3. Password - Single-factor login
4. Token-based - Hardware security key
31 - Pick Answer Match Encryption Technique to Description

1. Symmetric Encryption - Same key used to encrypt and decrypt
2. SSL/TLS - Encrypts data in transit
3. Asymmetric Encryption - Uses public and private key pair
4. Hashing - One-way data transformation
32 - Pick Answer Match Physical Controls to Examples

1. CCTV cameras - Monitors facilities
2. Physical door locks - Restricts hardware access
3. Cable locks - Secures devices to furniture
4. Security guards - Patrol sensitive areas
33 - Pick Answer Match User Control to Function

1. Profiles - Groups with similar permissions
2. User access rights - Defines permitted actions
3. Session timeouts - Limits idle access
4. Account controls - Enforces password policies

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Network transmission media and Network Security

Slides (33)

1 - Freestyle Wireless Transmission Media

2 - Freestyle

3 - Pick Answer Match Each Wireless Medium to Its Advantage

4 - Pick Answer What’s a Key Disadvantage of Satellite Transmission?

5 - Freestyle Wired Transmission Media

6 - Freestyle

7 - Pick Answer Which Medium Suits Long-Distance, High-Speed Data?

8 - Pick Answer Which feature makes fibre optic cables superior for high-speed internet?

9 - Pick Answer Which condition primarily affects microwave transmission performance?

10 - Pick Answer What is a major disadvantage of using fibre optic cables for networking?

11 - Pick Answer Which medium would be best for linking two data centers over 1 km apart?

12 - Pick Answer Which factor should be considered when choosing between wired and wireless media?

13 - Pick Answer Which factor primarily influences the choice of powerline networking over cable installation?

14 - Pick Answer What is a key limitation of powerline networking compared to dedicated cabling?

15 - Pick Answer Which characteristic of twisted pair cables enhances their performance by reducing interference?

16 - Pick Answer Which of the following statements about fibre optic cables is TRUE?

17 - Freestyle Network Security Overview

18 - Freestyle

19 - Pick Answer Match Threats to Typical Solutions

20 - Freestyle

21 - Freestyle Firewall Hardware & Software

22 - Freestyle

23 - Pick Answer Which Method Verifies User Identity Twice?

24 - Pick Answer Categorise Security Measures

25 - Freestyle

26 - Pick Answer Scenario: A public Wi-Fi network enabled malware infection and data breach at a branch office. Which combination of security measures would you implement to prevent this?

27 - Image Choice Which authentication method do you find most user-friendly?

28 - Pick Answer Case Study: A retail company relies solely on password-based logins and has suffered multiple unauthorized access incidents. What improvements would you recommend to enhance their login process?

29 - Pick Answer Match Security Measures to Their Types

30 - Pick Answer Match Authentication Types to Examples

31 - Pick Answer Match Encryption Technique to Description

32 - Pick Answer Match Physical Controls to Examples

33 - Pick Answer Match User Control to Function