200-125 sample questions

Question 1

Which logging command can enable administrators to correlate syslog messages with millisecond precision?

Accepted Answer

service timestamps log datetime mscec

Answer

no logging console

Answer

logging buffered 4

Answer

no logging monitor

Answer

logging host 10.2.0.21

Question 2

Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.)

Accepted Answer

blocking

Accepted Answer

listening AE

Answer

learning

Answer

forwarding

Answer

discarding

Question 3

Which feature can you implement to reserve bandwidth for VoIP calls across the call path?

Accepted Answer

RSVP

Answer

CBWFQ

Answer

round robin

Question 4

Which three statements about link-state routing are true? (Choose three.)

Accepted Answer

OSPF is a link-state protocol.

Accepted Answer

Routes are updated when a change in topology occurs.

Accepted Answer

Updates are sent to a multicast address by default.

Answer

Updates are sent to a broadcast address.

Answer

It uses split horizon.

Answer

RIP is a link-state protocol.

Question 5

Which command can you enter to determine whether a switch is operating in trunking mode?

Accepted Answer

show interface switchport

Answer

show ip interface brief

Answer

show vlan

Answer

show interfaces

Question 6

What are three benefits of implementing VLANs? (Choose three.)

Accepted Answer

A higher level of network security can be reached by separating sensitive data traffic from other network traffic.

Accepted Answer

A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure.

Answer

A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure.

Answer

Broadcast storms can be mitigated by decreasing the number of broadcast domains, thus increasing their size.

Answer

Port-based VLANs increase switch-port use efficiency, thanks to 802.1Q trunks.

Answer

VLANs make it easier for IT staff to configure new logical groups, because the VLANs all belong to the same broadcast domain.

200-125 Sample Questions & Answers