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Question:
(a) Mention three limitations of a firewall.
(b) Compare packet-filtering and proxy-base firewalls. Give advantages and drawbacks of both.
(c) "Proxies effectively hide machines residing behind it from the Internet." Justify this statement.
(d) Which type of Intrusion Detection System (IDS) is only effective against known attack methods?
(e) Describe a Honeypot.
(f) Imagine you are the network manager of a company which uses a DMZ/firewall configuration to secure its connection to the Internet. You discover that an employee has attached a modem to his office phone line so that he can dial in to his desktop computer to get access to his files so he can work at home.
i. Is this a potential security risk for the company? Explain.
ii. What immediate action should you take in this situation?
iii. The employee has a legitimate need to work from home. How should you handle this?
Question: (a) Explain briefly the PCI Control Objectives which enterprises must meet to be compliant with the Payment Card Industry Data Security Standard (PCI DSS). Specify a
Problem 1: Show what are the benefits of project quality management? • Customer satisfaction • Reduced cost • Increased competitiveness • Fulfilment of social and economic r
Question: (a) State the strong law of large numbers. (b) Data have been collected on response times (in minutes) at a fire station. The data are 2:7 1:8 0:8 1:4 1:2 (i
ADDRESS MASKS To identify receiver, network apply address mask to receiver address and calculate to network address in routing table. It can use Boolean 'and' to calculate the
(a) Explain the two possible configuration for 3DES. (b) What is the main disadvantage of 3DES? (c) Why are most modern symmetric algorithm block ciphers? (d) Describe
Describe the important features of application layer. The features of the application layer are as follows. 1. Efficient User Interface Design is explained below: Appli
Hardware, Software, and Network Asset Identification What information attributes to track is dependent on: • Requires of organization/risk management efforts • Management
Why an organization need the issue specific security policy
Question: (a) Data on four variables are stored in a file called file1.dat. The first line of the file is the variable names f, x, y and z. Give the R commands to (i) read t
FRAGMENTATION One method is to limit datagram size to smallest MTU of any server. IP needs fragmentation i.e. datagrams can be divided into pieces to fit in network with small
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