CSSE4004 - Lecture 4

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Quiz by tb22, updated more than 1 year ago
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CSSE4004 - Lecture 4

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Question 1

Question
Which of the following is true
Answer
  • Entities can have more than one access point at a time
  • An entity may change access points
  • Access points should not be tied to a specific address
  • 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
  • A file path
  • 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
  • Used in Mobile IP
  • The care-of-address stays static but the home address changes as the entity moves
  • 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
  • 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
  • Iterative approach can use result caching more effectively
  • Iterative approach has higher communication costs
  • In iterative name resolution the client contacts each name server directly at each level
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