Q. If syn = 0 and ack = 1, it indicates

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Q. A DNS.....................server gets its data from another DNS server.

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Q. The .............................field in the MIME header describes the method used to encode the data.

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Q. A client message usually needs ........................ to send mail.

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Q. Which one is not a method of HTTP?

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Q. Which one of the following is a communication protocol used for email?

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Q. Which one of the following statement about email is false?

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Q. Which one of the following can be used on the IP network to monitor a router?

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Q. Which of the following is true?

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Q. Which of the following is not a Block cipher?

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Q. In a ................................attack, an intruder comes between two communicating parties, Intercepting and replying to their messages.

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Q. A computer crime is

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Q. A program that migrates through networks and operating systems by attaching itself to different Programs and databases is a

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Q. In RSA.............................in the common factor in both keys?

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Q. Programs that come into a computer system disguised as something else are called

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Q. Having a(n) .....................................is important to help large Organization continue operating until Normal computer operations.

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Q. In what way does a firewall increase the securities of a VPN?

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Q. Choose the false one.

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Q. There are 15 users communicating to each other. How many pairs of keys are required to authenticate the communications if the symmetric key is used?

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Q. Let the value of the RTT(Round-Trip-Time)is to be measure (d). The value of the previous RTT be 350μs. Let the value of α be 90% the new RTT, hence the retransmission time is ______ .(Assume it takes a segment at this moment to be acknowledged in 90μs)

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