Deck 10: RSTP and Etherchannel Configuration

Question 1

What is the difference between EtherChannel auto and desirable modes?

A) Auto will always initiate autonegotiation, whereas desirable will not.
B) Desirable will always initiate autonegotiation, whereas auto will not.
C) Auto will always try to negotiate to an access port first before trying other modes.
D) Desirable mode will not function and put the port into errdisable mode unless both sides of the link are in desirable.
E) Auto mode will not function and put the port into errdisable mode unless both sides of the link are in auto.

Answer 1

Desirable will always initiate autonegotiation, whereas auto will not.

Question 2

Which Cisco STP mode extends on the IEEE 802.1w standard by providing an STP instance per VLAN?

A) MST
B) RPVST+
C) PVST+
D) CST

Answer 2

RPVST+

Question 3

Which STP mode is the default on most modern Cisco Catalyst switches?

A) MST
B) RPVST+
C) PVST+
D) CST

Answer 3

PVST+

Question 4

What is the only way an engineer can alter the value of the bridge ID?

A) Modify the main switch MAC address
B) Configure the bridge ID under STP configuration mode
C) Swap out the main switch network interface card
D) Configure the STP priority

Question 5

When configuring a switch with system ID extension enabled, what STP priority multiple must be used?

A) 4096
B) 1024
C) 2048
D) 9216

Question 6

What are the two different EtherChannel protocols supported by most modern Cisco switches?

A) PAgP
B) LACP
C) LAPB
D) PPTP

Question 7

Which EtherChannel mode should be used if the intention is to have the targeted interfaces initiate a connection via LACP?

A) Auto mode
B) Desirable mode
C) Active mode
D) Passive mode

Question 8

Rather than adopting Cisco's proprietary STP method, the IEEE created their own method which was defined in 802.1Q amendment 802.1s. What is the name of this STP method?

A) PVST
B) MSTP
C) PSTP
D) RPVST

Question 9

Which command on a Cisco Catalyst switch tells the switch which type of STP to use?

A) Spanning-tree mode
B) STP mode
C) Spanning-tree config
D) STP config

Question 10

Which of the following sends one set of BDPUs in the network, regardless of the number of VLANs?

A) RPVST
B) RPVST+
C) RSTP10+
D) RSTP

Question 11

When transmitting messages on VLAN trunks, which method sends the messages in the native VLAN with no VLAN header/tag?

A) RSTP
B) PRVST
C) PRVST+
D) MSTP

Question 12

Which command lets an engineer set the switch's STP/RSTP cost on that port?

A) spanning-tree vlan x priority y
B) spanning-tree [vlan x] cost y
C) spanning-tree [cost y] vlan x
D) spanning-tree priority y vlan x

Question 13

Which command lets an engineer set the switch's priority in that VLAN?

A) spanning-tree vlan x priority y
B) spanning-tree [vlan x] cost y
C) spanning-tree [cost y] vlan x
D) spanning-tree priority y vlan x

Question 14

An engineer wants to define the load distribution method as the source MAC address. Which command should the engineer use?

A) port-channel load-balance src-mac
B) load-balance port-channel src-mac
C) port-channel load-balance mac-add
D) load-balance port-channel mac-add

Question 15

An engineer needs to define the load distribution method as the source IP address. Which command could this engineer use?

A) port-channel load-balance dst-ip
B) port-channel load-balance ip-src
C) port-channel load-balance src-dst-ip
D) port-channel load-balance src-ip

Question 16

An engineer would like to define the load distribution method as the destination TCP or UDP port. Which command should this engineer use?

A) port-channel load-balance dst-tcp-udp
B) port-channel load-balance dst-port
C) port-channel load-balance dst-src-port
D) port-channel load-balance dst-tcp-udp-port

Question 17

Which of the following terms is not synonymous with the others listed?

A) EtherChannel
B) PortChannel
C) ChannelGroup
D) CiscoChannel

Question 18

When configuring an EtherChannel manually, how many steps must be followed?

A) 3
B) 10
C) 2
D) 5

Question 19

Which two standards are supported by most Cisco Catalyst switches for negotiating that only links that pass the configuration checks are actually used in an EtherChannel.

A) PGP and LACP
B) PAgP and LACP
C) LDAP and LACP
D) PaGP and PGP

Question 20

An engineer would like to define the load distribution method as both the source and destination IP addresses. Which command should this engineer use?

A) port-channel load-balance src-dst-mac
B) port-channel load-balance dst-port
C) port-channel load-balance src-dst-ip
D) port-channel load-balance dst-ip-src