Which of the following is true
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
Which of the following are examples of Flat Naming
An auto-increment ID
A phone number
A file path
A hash of file contents used to identify the file
The Domain Name System is an example of a flat name resolution mechanism
Which of the following is true about the home-based approach for resolving flat names
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
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.
Which of the following is not a technique for resolving a flat name
Distributed Hash Tables
Broadcasting the ID requesting the entity to return its current address
Leaving pointers when the entity moves
Polling the address space
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
