Networking Questions

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11.

The problem with unicast delivery is that the ___________

A

memory allocation is difficult

B

server must establish a separate unicast session for each client

C

the routers must support unicasting

D

the clients must be close to the server

Correct Answer: B

None.

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12.

The difficulty with multicasting from a practical point of view is ___________

A

memory allocation is difficult

B

server must establish a separate unicast session for each client

C

the routers must support multicasting

D

none of the mentioned

Correct Answer: C

None.

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13.

To let a client have random access to a media stream with ___________

A

the protocol used must not be stateless

B

the server must support download

C

the stream should give access rights to the client

D

all of the mentioned

Correct Answer: A

None.

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14.

Every NFS request has a _________ allowing the server to determine if a request is duplicated or if any are missing.

A

name

B

transaction

C

sequence number

D

all of the mentioned

Correct Answer: C

None.

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15.

A server crash and recovery will __________ to a client.

A

be visible

B

affect

C

be invisible

D

harm

Correct Answer: C

All blocks that the server is managing for the client will be intact.

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16.

The server must write all NFS data ___________

A

synchronously

B

asynchronously

C

index-wise

D

none of the mentioned

Correct Answer: A

None.

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17.

A single NFS write procedure ____________

A

can be atomic

B

is atomic

C

is non atomic

D

none of the mentioned

Correct Answer: B

None.

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18.

The NFS protocol __________ concurrency control mechanisms.

A

provides

B

does not provide

C

may provide

D

none of the mentioned

Correct Answer: B

None.

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19.

in NFS involves the parsing of a path name into separate directory entries

A

Path parse

B

Path name parse

C

Path name translation

D

Path name parsing

Correct Answer: C

None.

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20.

For every pair of component and directory vnode after path name translation ____________

A

a single NFS lookup call is used sequentially

B

a single NFS lookup call is used beginning from the last component

C

at least two NFS lookup calls per component are performed

D

a separate NFS lookup call is performed

Correct Answer: D

None.

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