CCNA Data Center

Question 1

Describe how protocol Fiber Channel handles flow control

Answer 1

The receiver RX will send a credit signal to transmitter to tell it amount which is allow to send

Question 2

Why have LAN and SAN have been segregated:

Answer 2

1. Security -
2. Bandwidth - SAN was also higher
3. Flow Control

Question 3

What is FCoE

Answer 3

Combining FC protocol with Ethernet Protocol to work over 10GIG links

Question 4

Reasons to use the layered/modular approach

Answer 4

1. Scalability

2. Resilient

Question 5

Describe features of the Core Layer

Answer 5

1. Large amount of bandwidth 40gig 100gig…

2.

Question 6

What is VN-Link

Answer 6

The ability to tag traffic from one virtual machine to track the flow thru the network

Question 7

Cisco Data Center 3.0 approach

Answer 7

1. Virtualization
2. Unified Fabric
3. UCS

Question 8

Nexus 7K should be able to do the following:

Answer 8

1. L3/L2

2. DCB/FCoE

Question 9

what is ISSU

Answer 9

In service software upgrade. Can be upgrade without interruption.

Question 10

What is the CMP

Answer 10

Connectivity Management Processor.
Light out connectivity.
Own Memory
Own power supply

Question 11

What is the difference between 5000 and 5500 series Nexus

Answer 11

The 5500 series provides L3

Question 12

What is GEMs

Answer 12

Generic Expansion Module.

Question 13

MDS

Answer 13

Multidirector Switches, Part of SAN

Question 14

VOQ

Answer 14

Virtual Output Queuing

Question 15

Protocols found in SAN

Answer 15

1. FCoE
2. FC
3. FICON
   4, FCIP
4. iSCSI

Question 16

License types for SAN - MDS

Answer 16

1. Feature Based

2. Module Based

Question 17

What is NPV

Answer 17

N Port Virtualization - allows to scale SAN and not consume domain ids for each switch implemented

Question 18

Sup 2 vs Sup 2A

Answer 18

SUP 2A has FCoE

Question 19

On the Nexus, what version of SSH is default

Answer 19

SSHv2

Question 20

What are the VRFs that default

Answer 20

1. Default

2. Management

Question 21

What can be upgraded with the ISSU

Answer 21

1. Kickstart
2. BIOS
3. System
4. FEX
5. I/O Module

Question 22

In an upgrade of the 5K, since there is not dual sups, what happens

Answer 22

The control plan will be interrupted, but the data plane continues to forward traffic

Question 23

Steps to take when upgrading 5000

Answer 23

1. download software cisco.com
2. tftp -> bootflash
3. show incompatibility
4. show install all impact
5. install all
6. show install all status

Question 24

type of planes of nexus

Answer 24

1. data plane
2. management plane
3. Control plane

Question 25

what is CoPP

Answer 25

Control plane policing - | control the limits of egress and ingress

Question 26

CFS

Answer 26

Cisco Fabric Service

Question 27

Peer Link port has to be what speed

Answer 27

10Gig

Question 28

what parameters can you see on the keepalives

Answer 28

1. Destination 2. interval 3. timeout 4. hold timeout 5. vrf 6. udp port 7. tos

Question 29

Three important vpc commands

Answer 29

1. show vpc brief 2. show vpc peer-keepalive 3. show vpc role

Question 30

TRILL

Answer 30

Transparent Interconnection of Lots of Links - replacing Spanning Tree Protocol

Question 31

What protocol does TRILL use

Answer 31

IS-IS

Question 32

ECMP

Answer 32

Equal Cost Multipathing routing of L2 info - Fabric Path

Question 33

OTV

Answer 33

Overlay Transport Overlay

Question 34

OTV - Edge devices -two devices

Answer 34

Multihomed

Question 35

OTV - Internal interfaces

Answer 35

do not participate in OTV. They do pass vlan information

Question 36

OTV - Join Interfaces

Answer 36

L3 interfaces. Physical L3 interfaces.

Question 37

OTV - Overlay Interfaces

Answer 37

Virtual interface that carry OTV traffic

Question 38

EoR

Answer 38

End of Rack - 5K

Question 39

ToR

Answer 39

Top of Rack - 2K

Question 40

Where is a VNtag used

Answer 40

5k to 2K

Question 41

What standard does VNtag use

Answer 41

802.1Qbh

Question 42

What is the Fabic Port

Answer 42

It is the physical port that connects to the 2K

Question 43

Where is a FEX uplink

Answer 43

on the 2K to the 5K

Question 44

What is a FEX port

Answer 44

the port on the 2K that connects to a device

Question 45

What is a VDC

Answer 45

Virtual Device Context

Question 46

What are the physical disks called in storage

Answer 46

Array - based

Question 47

What are the Logical Disk identifier called for storage

Answer 47

LUN - Logical Unit Number

Question 48

What is LUN MASKING

Answer 48

Only allowing certain servers access to the logical disk

Question 49

what is PWWN

Answer 49

Port World Wide Name

Question 50

LUN MAPPING

Answer 50

done in FC environments - maps logical disks to host bus adaptors

Question 51

LUN Zoning

Answer 51

Cisco version of LUN MAPPING

Question 52

What are the benefits of virtualization

Answer 52

1. Partitioning 2. Encapsulation 3. Isolation 4. Hardware Abstraction 5. CapEx/OpEx