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Data Encapsulation Answers

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1
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Differentiate between trusted-source-security and antispoofing-security techniques.

A
Antispoofing security checks whether the sender is in-network; trusted-source security does not.
B
Trusted-source security checks IP addresses, while antispoofing security does not.
C
Trusted-source security is more reliable in most situations.
D
Antispoofing security also decapsulates, while trusted source security does not.
2
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Which statement below correctly differentiates between frames and bits?

A
Frames are more basic units of data than bits.
B
Frames have more information in them than bits.
C
Frames are made up of bits but not vice versa.
D
Frames have less information than bits have.
3

Jenny’s boss says that he already has security that accepts messages only from trusted sources, so he does not need more security. Is he right? Why or why not?

A
Yes, because he has the best security there is.
B
No, because spoofing fools trusted-source security.
C
Yes, because trusted source is sufficient to keep out all known tactics.
D
No, because attackers always think up new ways to get into a system.
4

Compare the TCP/IP layers. Which does not require a header or footer?

A
Internet
B
transport
C
physical
D
application
5

Which of the following statements is False?

A
IP addresses are used by the Internet layer.
B
MAC addresses are used by the data-link layer.
C
The MAC address marks the final destination of the frames.
D
A package passes through several MAC addresses to reach an IP address.
6

The transport layer adds IP addresses to data.

A
False
B
True
7

Why are computer messages encapsulated?

A
to keep many small bits of data together in a single package
B
to make the messages more secure against anything from tampering to unauthorized reading
C
to allow an unintelligent machine to handle a sophisticated task
D
to translate messages from one machine’s programming language into another
8

Headers and footers are handling instructions.

A
False
B
True
9

Match the vocabulary to the correct definition.

Answer not available

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