E20-520

1. In a requirements analysis, what are classified as external requirements?

A. Availability and reliability

B. Delivery and standards

C. Portability and interoperability

D. Privacy and legislative
Answer: D

2. In a FC SAN, what is an advantage of using copper media instead of optical media?

A. Better signal-to-noise ratio for short distances

B. Higher speed

C. Larger frame payload

D. Longer distances are supported
Answer: A

3. A pair of ISLs is configured between two Fibre Channel switches with trunking enabled. The trunk is
carrying the I/O traffic from multiple hosts generating a total of 3,200 IOPS each, with a block size of 4 KB.
Assuming 2 Gb links, which percentage represents the best estimate of ISL utilization?

A. 1

B. 3

C. 10

D. 20
Answer: B

4. A pair of ISLs is configured between two Fibre Channel switches with trunking enabled. The trunk is
carrying the I/O traffic from several hosts generating a total of 3,000 IOPS with a block size of 32 KB.
Assuming 2 Gb links, what is the ISL utilization?

A. 3%

B. 25%

C. 50%

D. 90%

Answer: B

5. What is a benefit of Kerberos over other authentication protocols?

A. Client can provide its own privilege information, reducing authentication traffic

B. Ensures a user will not be disconnected from a share because tickets do not expire

C. Stores file system ACLs for the domain environment

D. User ID and password information is never stored on the Kerberos server
Answer: A

6. A company has a PC with an IP address of 10.124.15.111. The PC needs to communicate with a NAS
device at the IP address 10.123.12.54. Which OSI protocol layer is responsible for directing the packets
from the client to the NAS device?

A. IP

B. NFS

C. TCP

D. UDP
Answer: A

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