DNDNS-200 Online Practice Questions and Answers

By default, how often are Bridge Protocol Data Units (BPDUs) sent with reference to 802.1w?

A. every 15 seconds

B. every 2 seconds

C. every 5 seconds

D. every 30 seconds

Refer to the exhibit.

Two S-Series switches have been configured as a VLT Pair.

Which three conclusions should be made based on the output shown from the first peer switch? (Choose three.)

A. The domain ID was administratively defined during the configuration of VLT.

B. Spanning-tree has been disabled to ensure that no VLT loops occur.

C. The System MAC was automatically defined.

D. The peer link is down.

E. The restoration of VLT ports after a system has been rebooted has been automatically configured.

F. The command back-up destination has not been applied.

A customer has two locations that are six miles apart and connected by customer-owned dedicated fiber. The customer tells the deployment engineer that the two sites need to be connected by 10 Gb.

Which two requirements should the deployment engineer verify? (Choose two.)

A. 62 Micron Multi-Mode Fiber

B. Single Mode Fiber

C. Long Wave SFP+ Transceiver

D. 50 Micron Multi-Mode Fiber

E. Long Wave SFP Transceiver

F. Short Wave SFP+ transceiver

Refer to the exhibit.

The trunk links are being over utilized. A network engineer needs to resolve the issue by pruning the trunk links of unnecessary vlans. Each switch must be management accessible via VLAN 1.

What are the allowed vlans on each trunk link?

A. Switch A [Te1/0/2 allowed VLAN 1, 10, 20]Switch B [Te1/0/2 allowed VLAN 1, 10, 20] [Te1/0/1 allowed VLAN 1, 10, 20]Switch C [Te1/0/2 allowed VLAN 1, 10, 20] [Te1/0/1 allowed VLAN 1, 10, 20]Switch D [Te1/0/2 allowed VLAN 1, 10, 20]

B. Switch A [Te1/0/2 allowed VLAN 1-4096]Switch B [Te1/0/2 allowed VLAN 1-4096] [Te1/0/1 allowed VLAN 1-4096]Switch C [Te1/0/2 allowed VLAN 1-4096] [Te1/0/1 allowed VLAN 1-4096]Switch D [Te1/0/2 allowed VLAN 1-4096]

C. Switch A [Te1/0/2 allowed VLAN 1, 10]Switch B [Te1/0/2 allowed VLAN 1, 10] [Te1/0/1 allowed VLAN 1, 10, 20]Switch C [Te1/0/2 allowed VLAN 1, 10] [Te1/0/1 allowed VLAN 1, 10, 20]Switch D [Te1/0/2 allowed VLAN 1, 10]

D. Switch A [Te1/0/2 allowed VLAN 10]Switch B [Te1/0/2 allowed VLAN 10] [Te1/0/1 allowed VLAN 10, 20]Switch C [Te1/0/2 allowed VLAN 10] [Te1/0/1 allowed VLAN 10, 20]Switch D [Te1/0/2 allowed VLAN 10]

In an OSPF network, a network engineer uses a loopback interface with an assigned IP Address instead of configuring an IPv4 address as the Router I.

What are two benefits of this choice? (Choose two.)

A. OSPF is more reliable when a loopback interface is configured because a loopback interface is always active.

B. The loopback interface does not require a different subnet to be configured on each switch.

C. Not using a loopback interface saves real IP address space that can be used in the future.

D. The loopback interface IP address when advertised via OSPF can be used as a reliable remote management IP address.

Refer to the exhibit.

On switch S4820-1, commands are entered. The associated output is as shown.

What correctly defines the state of the Root Bridge for VLAN 2 and VLAN 3?

A. VLAN 2 Root Bridge ?S4820-2VLAN 3 Root Bridge ?S4820-2

B. VLAN 2 Root Bridge ?S4820-2VLAN 3 Root Bridge ?S4820-1

C. VLAN 2 Root Bridge ?S4820-1VLAN 3 Root Bridge ?S4820-1

D. VLAN 2 Root Bridge ?S4820-1VLAN 3 Root Bridge ?S4820-2

The status LED is blinking RED for an N-Series switch. Which system behavior is indicated?

A. The switch is booting.

B. A noncritical system error has occurred.

C. Normal operation is occurring.

D. A critical system error has occurred.

When facing the front of a C-Series switch, in which direction does air flow?

A. from the right side to left side

B. from the front side to back side

C. from the back side to front side

D. from the left side to right side

Refer to the exhibit.

A network engineer is installing a new Dell S-Series switch on the rack and notices that the Power LED is blinking yellow. What is causing this behavior on the switch?

A. One of the fans has failed.

B. One of the power supplies has failed.

C. The switch is still rebooting.

D. A problem has occurred with the stack cables.

Refer to the exhibit.

On switch S4820-2, commands are entered. The associated output is a follows:

Which command MUST have been entered previously on switch S4820-1?

A. S4820-1 (conf-pvst)#vlan 2 bridge-priority 4096

B. S4820-2 (conf-pvst)#vlan 2 bridge-priority 20480

C. S4820-1 (conf-pvst)#vlan 3 bridge-priority 20480

D. S4820-1 (conf-pvst)#vlan 3 bridge-priority 4096