2900502
Question 1
Question
Which of the following is true
Answer
-
Entities can have more than one access point at a time
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An entity may change access points
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Access points should not be tied to a specific address
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Access points should have a flat name
Question 2
Question
Which of the following are examples of Flat Naming
Answer
-
An auto-increment ID
-
A phone number
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A file path
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A hash of file contents used to identify the file
Question 3
Question
The Domain Name System is an example of a flat name resolution mechanism
Answer
- True
- False
Question 4
Question
Which of the following is true about the home-based approach for resolving flat names
Answer
-
Entities have home location that keeps track of entity’s current location
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Used in Mobile IP
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The care-of-address stays static but the home address changes as the entity moves
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When communicating with a mobile entity, the sender first checks the last location for a pointer to the home address
Question 5
Question
In a recursive name resolution system, name servers communicate directly with each other except for the root name server which also communicates with the client.
Answer
- True
- False
Question 6
Question
Which of the following is not a technique for resolving a flat name
Answer
-
Distributed Hash Tables
-
Broadcasting the ID requesting the entity to return its current address
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Leaving pointers when the entity moves
-
Polling the address space
Question 7
Question
Which of the following is true
Answer
-
Recursive approach has higher performance demand on name servers
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Iterative approach can use result caching more effectively
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Iterative approach has higher communication costs
-
In iterative name resolution the client contacts each name server directly at each level
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