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 networking engineer needs to configure several VLANs for S-Series switches for both Untagged and Tagged traffic.

Which three of the following apply? (Choose three.)

A. A Tagged interface can only be a member of a single Tagged VLAN.

B. A Tagged interface can be a member of multiple VLANs.

C. Hybrid ports can be assigned to both an Untagged VLAN and Tagged VLAN.

D. When a Tagged interface is removed from a VLAN, it will always be placed in the default VLAN as a Tagged interface.

E. Hybrid ports can be assigned to multiple VLANs but not the default VLAN.

F. When a Tagged interface is removed from a VLAN, it will remain Tagged only if it is Tagged in another VLAN.

A network engineer has configured LACP on two connected S-Series switches. LACP is not formed for port TenGigabitEthernet 0/72.

The network engineer has issued "show lacp" to debug the issue.

From the output shown, what are two likely reasons for this result? (Choose two.)

A. Peer port-channel is configured in passive mode.

B. Link speed of the port is different.

C. MTU of the port is different from the channel members.

D. Peer port-channel protocol is configured differently.

E. Peer port-channel priority configured is zero.

F. Peer port-channel key is configured differently.

Refer to the exhibit.

Considering the network topology and information shown, what is an issue with end point devices in network 192.168.102.0/24 that try to route to 192.168.101.0/24?

A. ICMP Redirects

B. Suboptimal Routing

C. Routing Loop

D. Summarization Black Hole

A network engineer needs to apply Layer 2 port security on an existing N-Series switch. The customer wants to prevent end-users from plugging in their personal laptop in a LAN port at their desk. The company has confirmed that they want to hardset the security to ensure that security only applies to company-supplied computers. The customer has confirmed that computers will not be moving from desk to desk. A total of 10 systems are currently connected. The customer has stated that all switchports must be configured as well. If any other device is plugged in, there will be no network connectivity.

Which additional information must be provided to the engineer to meet the deployment guidelines?

A. the media access control addresses of all devices connected to the switch

B. the dot1p values for all devices connected to the switch

C. the Internet Protocol addresses of all devices connected to the switch

D. the fully qualified domain names of all devices connected to the switch

An N-Series stack has been implemented. The network engineer needs to verify that all switches in the stack are running the same firmware.

Which command should be used to verify stack status?

A. Show run

B. Show stack-port all

C. Show stack

D. Show switch

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

Which two commands are required to configure OSPFv2 on N-Series? (Choose two.)

A. router-id ipv4-address

B. router id ipv6-address

C. ip ospf enable

D. router ospf [process id]

E. ip ospf priority number-value

Which three cabling items should be considered when stacking N4000 Series switches? (Choose three.)

A. Use interfaces with the same bandwidth between stack members.

B. Use a cascade topology for redundancy between stack members.

C. A QSFP+ breakout cable cannot be used for stacking between members.

D. Ports from an installed expansion module are not supported with stacking.

E. A QSFP+ port should be counted as a single port when used for stacking.

F. Up to eight ports may be used on any switch for stacking purposes.

A new switch is already configured with an IP address and is reachable within the network. SSH and HTTPS are verified. The network engineer needs to disable HTTP for switch management.

What is the correct command?

A. console# no ip https server

B. console(config)# no ip http server

C. console# no ip http server

D. console(config)#ip http server disable

Refer to the exhibit.

Given the output from an N-Series switch shown, how many instances of VRF are running?

A. 4

B. 2

C. 3

D. 1

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.

A network engineer has connected a Port Extender to a C-Series switch. While issuing the command "show pe brief" on the C-Series switch, the engineer sees a status of "offline".

Which two things could be causing the Port-Extender to show "offline"? (Choose two.)

A. Mismatched software version

B. Communication error

C. Physical interfaces are shutdown

D. Incorrect Port-Channel numbering

The network engineer powers on a new S-Series switch. None of the devices connected to this new switch are responding to pings.

Which two conditions should the network engineer verify? (Choose two.)

A. an ARP table is configured

B. the switch has a default Gateway

C. ports are not shut down

D. OSPF is enabled

E. ports are in switchport mode