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ARP RESPONSES
Let's search out how does a computer know whether an incoming frame have an ARP message. The type field in the frame header defines that the frame contain an ARP message. The Ethernet standard substance that the type field in an Ethernet frame carrying an ARP data packet must has the hexadecimal value 0 x 806, as given in the figure below.
CASHING ARP RESPONSES:
Although message interchange can be used to bind addresses, sending a request for every binding is hopelessly not efficient. To remove network traffic, ARP software saves and extracts the information from a response so that it may be used for subsequent data packets. ARP manages the Table as a cache short-term memory.
Explain TCP congestion control.
FRAGMENT IDENTIFICATION: IDENT field in every fragment matches IDENT field in real datagram. Fragments from different datagrams may arrive out of order and still be saved out.
What key which if used to encrypt the ciphertext again would give back the plaintext (i.e. key is a weak key)? Define a formula for identifying weak keys for the cipher below (
define .
The method used to check errors is checksum . In this method data is treated as a sequence of integers and their arithmetic sum is calculated and the carry bits are added to the
(a) Using Fermat's theorem, find 3 201 mod 11. (b) Explain how the Diffie-Hellman key agreement protocol works and what its purpose and main properties are. Consider a Dif
(a) Consider the subsequent authentication options: A. Using password. B. Using pin and fingerprint Which option A or B provides stronger security and why? (b) Give
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
IPV6 NEXT HEADER It is given in the figure below:
Attacker's Motives behind the Cyber Attack Before adapting the necessary measures to deal with the problem, understanding and evaluating the blogger's psyche and his motivation
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