CISCO CCNA Exam – Q213

Which set of commands is recommended to prevent the use of a hub in the access layer?

A. switch(config-if)#switchport mode trunk
switch(config-if)#switchport port-security maximum 1
B. switch(config-if)#switchport mode trunk
switch(config-if)#switchport port-security mac-address 1
C. switch(config-if)#switchport mode access
switch(config-if)#switchport port-security maximum 1
D. switch(config-if)#switchport mode access
switch(config-if)#switchport port-security mac-address 1

Correct Answer: C

Explanation:
This question is to examine the layer 2 security configuration.
In order to satisfy the requirements of this question, you should perform the following configurations in the interface mode:
First, configure the interface mode as the access mode
Second, enable the port security and set the maximum number of connections to 1.

CISCO CCNA Exam – Q44

Refer to the exhibit.
CISCO CCNA Exam – Q44

How should the FastEthernet0/1 ports on the switches that are shown in the exhibit be configured to allow connectivity between all devices?

A.
The ports only need to be connected by a crossover cable.
B.
SwitchX(config)# interface fastethernet 0/1
SwitchX(config-if)# switchport mode trunk
C.
SwitchX(config)# interface fastethernet 0/1
SwitchX(config-if)# switchport mode access
SwitchX(config-if)# switchport access vlan 1
D.
SwitchX(config)# interface fastethernet 0/1
SwitchX(config-if)# switchport mode trunk
SwitchX(config-if)# switchport trunk vlan 1
SwitchX(config-if)# switchport trunk vlan 10
SwitchX(config-if)# switchport trunk vlan 20

Correct Answer: B

Explanation:
IN order for multiple VLANs to cross switches, the connection between the switches must be a trunk. The “switchport mode trunk” command is all that is needed, the individual VLANs should not be listed over that trunk interface.

CISCO CCNA Exam – Q14

Refer to the exhibit.
CISCO CCNA Exam – Q14

A network administrator is configuring an EtherChannel between SW1 and SW2. The SW1 configuration is shown. What is the correct configuration for SW2?

A.
interface FastEthernet 0/1
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/2
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
B.
interface FastEthernet 0/1
channel-group 2 mode auto
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/2
channel-group 2 mode auto
switchport trunk encapsulation dot1q
switchport mode trunk
C.
interface FastEthernet 0/1
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/2
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
D.
interface FastEthernet 0/1
channel-group 1 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/2
channel-group 1 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk

Correct Answer: C

Explanation:
If the EtherChannel was configured with mode “auto”, it was using PAgP, so, we need to configure the other switch with “desirable” mode.
PAgP modes: auto | Desirable
LACP modes: active | pasive

CISCO CCNA Exam – Q12

Refer to the exhibit.
CISCO CCNA Exam – Q12
What set of commands was configured on interface Fa0/3 to produce the given output?

A.
interface FastEthernet 0/3
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
B.
interface FastEthernet 0/3
channel-group 2 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
C.
interface FastEthernet 0/3
channel-group 2 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
D.
interface FastEthernet 0/3
channel-group 2 mode on
switchport trunk encapsulation dot1q
switchport mode trunk

Correct Answer: B

Explanation:
Based on the output shown, the configured channel group number was 2 and the mode used was passive, so only choice B is correct.