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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) Describe the term interference in the space, time, frequency, and code domain. (b) Consider a 1 G - AMPS: 824-849 MHz (forward) ; 869-894 MHz (reverse). B
Explain TCP congestion control.
QUESTION a) A switch basically operates by forwarding frames from one part of the network to another, based on MAC address. Describe the three types of switching namely store
Network security has become much more complex than ever before. New types and sources of network security threats, always-on high-speed Internet connections, wireless networking, a
Transposition technique
Maximum Transmission Unit (MTU) Each hardware method specification adds the definition of the maximum size of the frame data area, which is known the Maximum Transmission Uni
QUESTION: (a) Briefly explain the steps involved in Network Simplex Method. (b) What data structures you would expect in the Network Simplex Method. Show the data struct
Q. Attacks on wireless network WSN are vulnerable to attacks which compromise the integrity of the WSN nodes by decreasing the nodes' fault tolerance capabilities, data distrib
How safe is the encryption of virtual private networks?
ADDRESS RESOLUTION WITH TABLE LOOKUP : Resolution needs data structure that has information about address binding. A distinct address-binding table is used for every physical n
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