2.4

Question 1

Whats the hypervisor?

Answer 1

Its a virtual machine manager that manages virtual platform and guest operating systems.

Question 2

Whats a NAS?

Answer 2

(Network Attached Storage) It’s allows us to connect a storage device and connect it to an Ethernet network and proved file-level access

Question 3

Whats a SAN?

Answer 3

(Storage Area Network) It looks and feels like a local storage device which is very efficient reading and writing on block-level access

Question 4

Whats the normal amount of payload that can be supported by Ethernet?

Answer 4

1500 bytes of payload

Question 5

What are Jumbo frames?

Answer 5

It allows us to transfer 9216 bytes of data within a single Ethernet frame. (9000)

Question 6

What are Jumbo frames useful ofr?

Answer 6

They increase transfer efficiency, but all the devices must support jumbo frames (switches, interface cards)

Question 7

Whats Fiber channel and how does it work.

Answer 7

It’s a specialized high-speed topology built to connect servers to storage devices. Sever and storage connect to a Fiber Channel switch.

Question 8

What are FCoE characterizations?

Answer 8

(Fiber Channel over Ethernet)

1. No special networking hardware needed
2. Usually integrates with an existing Fiber Channel infrastructure
3. Not routable
4. Uses Ethernet card rather than Fiber Channel adapter

Question 9

What are FCIP characterizations?

Answer 9

(Fiber Channel over IP)

1. Fiber channel tunneling
2. Geographically separate the servers from storage.

Question 10

What are iSCSI characterizations?

Answer 10

(Internet Small Computer Systems Interface)

1. Makes a remote disk look and operate like a local disk (like how Fiber Channel works)
2. It can be managed quite well in software (drivers available for many OSs, no topology or hardware needed.

Question 11

What are InfiniBand characterizations?

Answer 11

1. High-speed switching topology (alternative to Fiber Channel)
2. Copper and Fiber options
3. popular use in research and supercomputers