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Question:
(a) What is a script kiddie? Is it a significant security threat, and why?
(b) Assume that UNIX uses the user login name in lieu of the traditional salt, what is the effect on the security of the password?
(c) Explain the rationale behind the fact that many banks and credit card companies allow their customers to access their accounts from ATM machines using only 4 digits personal identification numbers (PIN).
(d) Consider Alice and Bob communicating. Compare the following two possible messages M1 and M2 sent by Alice. K is the secret key shared between Alice and Bob and K {m} denotes m encrypted using K.
M1: I'm Alice, K{timestamp} M2: I'm Alice, timestamp, hash{K, timestamp}
(i) What three security features are provided by M1 and M2?
(ii) Which message M1 or M2 is more secure and why?
Difference between synchronous tdm and statistical tdm
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Single Program Multiple Date A common style of writing data parallel programs for MIMD computers is SPMD (single program, multiple data): all the processors implement the same
What is Proxy ARP? Is using a router to give answer ARP requests. This will be completed when the originating host believes that a destination is local, when in fact is lies be
Dimensionality of Interconnection Network Dimensionality refers the arrangement of processing elements or nodes in an interconnection network. In linear network or single dimen
What is Daemon A daemon is a UNIX background process that implements the server side of a protocol. Daemons are unique to UNIX. For example, FTP stands for the File Transfer
a) Used for sending e-mail. b) Uses port 25.
State the types of performance of computer hardware The hardware, i.e., the server or computer has a direct relationship on performance in the following areas: Reliabili
Describe DHCP concept
When a P is returned when a Trace is run, it means the Protocol is unreachable.
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