VLAN Trunks and EtherChannel Bundles

Question 1

Does VTP support having multiple VTP servers in a domain?

Answer 1

yes

Question 2

In a VTP domain that is version 3 what must the primary VTP server be set to?

Answer 2

VTP primary

Question 3

What does VTP use in order to advertise updates across trunk links to all switches in a VTP domain?

Answer 3

multicast address

Question 4

What are the three types of VTP advertisements?

Answer 4

summary, subset, client requests

Question 5

When does a VTP summary advertisement occur?

Answer 5

every 300 seconds or when a VLAN is added, removed or changed

Question 6

When does a VTP subset advertisement occur?

Answer 6

after a VLAN configuration change occurs

Question 7

When does VTP client request advertisement occur?

Answer 7

when a switch with a lower revision number joins a VTP domain that has a higher revision number

Question 8

Should you reset every switch to a VTP revision number 1 or 0 before connecting it to a VTP domain?=

Answer 8

0

Question 9

What happens to access ports when you remove a VLAN from a switch?

Answer 9

access ports are move to VLAN 1

Question 10

Dynamic Trunk ports are established by switch ports sending what to negotiate whether the other end can be a trunk port.

Answer 10

DTP advertised packets

Question 11

How often does DTP advertise itself to neighbors so that they are aware of it DTP status?

Answer 11

30 seconds

Question 12

Ethernet network speeds are based on the powers of what?

Answer 12

10

10Mbps, 100Mpbs, 1Gbps …

Question 13

What’s another name for a logical EtherChannel?

Answer 13

member interfaces

Question 14

Does STP operate on a logical link or a physical link?

Answer 14

logical link

Question 15

What is the primary advantage of using port channels-EtherChannel?

Answer 15

reduction in topology changes when member link goes down.

Question 16

What does DWDM stand for?

What bandwidth are DWDM transceivers capability of?

Answer 16

Cisco Dense Wave Division Multiplexing

10-Gigabits

Question 17

What are the port modes for PAgP - Port Aggregation Protocol?

Answer 17

Auto and Desirable

Question 18

What are the port modes for LACP - Link Aggregation Protocol?

Answer 18

Passive and Active

Question 19

What is LACP fast?

Answer 19

LACP is advertised every 1 second and links can be identified and removed in 3 seconds compared to 90 seconds.

Question 20

Maximum number of port-channel interfaces need to be configured only on what?

For best practice and to accommodate load-balancing hashes, maximum number of port-channel interfaces should be configured in powers of?

Answer 20

master switch

two (ex. 2, 4, 8, 16)

Question 21

The port-channel master switch control what, and how?

Answer 21

which member interfaces and associated links are active by the LACP port priority

Question 22

What does the LACP system priority identify?

Answer 22

which is the master switch for a port channel

Question 23

What is the master switch on a port channel responsible for choosing?

Answer 23

which member interfaces are active in a port channel

Question 24

The traffic that flows across a port-channel is forwarded out member links based on what type of calculation?

Answer 24

calculated hash values across various packet header fields