Chapter 9


1

What is the primary function of all flow-control mechanisms?

Answer:

Reduce the probability of or completely avoid receive buffer overruns.

2

What are the two categories of QoS algorithms?

Answer:

Queue management and queue scheduling.

3

What is the name of the queue management algorithm historically associated with tail-drop?

Answer:

FIFO.

4

Which specification defines traffic classes, class groupings, and class-priority mappings for Ethernet?

Answer:

The IEEE 802.1D-2004 specification.

5

What is the name of the first algorithm used for AQM in IP networks?

Answer:

Random Early Detection (RED).

6

What are the names of the two dominant QoS models used in IP networks today?

Answer:

The Integrated Services Architecture (IntServ) and the Differentiated Services Architecture (DiffServ).

7

What is the name of the TCP state variable that controls the amount of data that may be transmitted?

Answer:

The Congestion Window (CWND).

8

What is the primary flow-control mechanism employed by iSCSI?

Answer:

The R2T PDU.

9

What are the names of the two QoS subfields currently available for use in FC-SANs?

Answer:

Preference and Priority.

10

What is the primary flow-control mechanism employed by FCP?

Answer:

The FCP_XFER_RDY IU.

11

Are FCIP devices required to map FC QoS mechanisms to IP QoS mechanisms?

Answer:

No.




Storage Networking Protocol Fundamentals
Storage Networking Protocol Fundamentals (Vol 2)
ISBN: 1587051605
EAN: 2147483647
Year: 2007
Pages: 196
Authors: James Long

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net