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(a) What is a pseudorandom generator? Give an example describing how it works.
(b) Explain the key components of a wireless network and their purpose.
(c) Describe the authentication used in WEP and WPA. Why is WPA better?
(d) Provide an example of how misconfiguration can put security at risk. Give four measures that may be implemented to improve security.
(e) Explain the schemes for distribution of public keys. In what ways are they vulnerable? What enhancement is given by Kerberos
Explain TCP congestion control.
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Cipher Methods There are 2 methods of encrypting plaintext: • Bit stream method – every bit in the plaintext bit is transformed into a cipher bit one bit at a time. • Block cip
TRANSMISSION ERRORS: Transmission exceptions may happen due to different causes for example power surges or interference may delete data during transmission. In result of wh
IPV6 DATAGRAM FORMAT It is given in the figure below:
Simplex data exchange Simplex communication defines to communication that happens in one direction only. Two definitions have made over time: a common definition, which is des
Use the Chinese remainder theorem to evaluate x from the following simultaneous congruences: x ≡ 1 (mod 2); x ≡ 2 (mod 3); x ≡ 3 (mod 5). Calculate gcd(14526, 2568). (
Limitations of firewall Firewalls cannot protect a network if security rules are not followed properly by an organization or if the rules are not defined properly. Firewalls ar
POLICY MANAGEMENT Policies should be managed as they constantly change. Good policy development and maintenance make a more resilient organization. All policies undergo tremendou
Write Pseudocode for the password guessing algorithm: Consider the following authentication protocol: Client Transmission Host
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