Page 106 - DCAP309_INFORMATION_SECURITY_AND_PRIVACY

Information Security and Privacy

Notes 7.7 Keywords

Computer Security: It is more like providing means to protect a single PC against outside
intrusion.

LAN: Networks that connect computers lying within a small distance (such as a room, or within
a building) from each other are called Local Area Networks (LANs).
Preventive Measures: It attempt to secure the access to individual computers – the network itself
– thereby protecting the computers and other shared resources such as printers, network-attached
storage connected by the network.
Securing Network Infrastructure: It is like securing possible entry points of attacks on a country
by deploying appropriate defense.

Trusted Networks: Trusted networks are defined as “the networks within your security boundary,
and are typically the networks you are trying to defend.”
Untrusted network: It is considered as the networks external your security perimeter.

7.8 Review Questions

1. What are the different types of networks? Discuss their comparison.
2. What is computer security? Explain the preventive measures attempted to secure the
access to individual computers.

3. Explain the concept of network security.
4. Compare and contrast between computer security and network security.
5. Make distinction between trusted and untrusted network.
6. What are unknown attacks?
7. Explain the technologies that provide imperative levels of protection against unknown
attacks.
8. Illustrate the different attributes of a secure network.
9. Explain the technique of Intrusion Detection by Program Analysis.

10. Make distinction between LAN and WAN.

Answers: Self Assessment

1. network 2. Networking
3. digital 4. Long Haul Networks (LHNs).
5. Internet 6. Value-added Network (VAN)

7. Computer security 8. unsecured
9. privacy 10. Trusted
11. Untrusted 12. unknown
13. unknown 14. Software Fault Isolation (SFI)

15. Intrusion detection by program analysis (IDS)

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