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a) Wireless local area network (WLAN) technologies constitute a fast-growing market introducing the flexibility of wireless access into office, home, or production environments. Give two advantages and two disadvantages of WLANs.
b) There are modes of wireless networks. One is known as an infrastructure network and the other one is the ad-hoc network. Show two diagrams to represent each one of them, putting emphasis on the difference between them.
c) Name an example of each type of the wireless network named above.
d) Outline two popular standards of the IEEE 802.11x Wi-Fi standard. Specify the operating frequency and speed of each standard.
e) Name one security issue with this wireless technology (IEEE 802.11x) and describe how this issue will be addressed.
f) With the aid of a diagram, show the architecture behind the Bluetooth technology.
Question: (a) A string of ciphertext was enciphered using an a±ne transformation of single letters in a 28-letter alphabet consisting of A to Z, a blank and a?, where A to Z ha
ARP MESSAGE FORMAT Although the ARP data packet format is sufficiently general to allow hardware addresses and arbitrary protocol. ARP is almost usually used to bind a 32-bit
UDP ENCAPSULATION As given in the figure below, UDP packet is included in IP datagram and the IP datagram is then attached in the Frame.
Question requires you to produce a pcap file from a Wireshark capture. In addition, you must include a screen capture of Wireshark and some specific information regarding the fram
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Techniques for combating Spam mails Many anti spam products are commercially available in market. But it should also be noted that no one technique is a complete solution to
Packet Filtering Firewall Packet filtering is a network security mechanism that works by controlling what data can flow in and out of the network. The basic device that interco
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Q1 (15 marks, 5 marks each part): This question has three parts: In a short paragraph (200-300 words) explain the fundamentals of Packet Switching and how it works. In a short pa
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