EMC EMC Other Certification DES-5121 Questions & Answers

• Question 1:

  How many untagged VLANs are allowed on a switchport mode trunk interface?

  A. 0

  B. 1

  C. 128

  D. 4096

  Correct Answer: B

• Question 2:

  

  Based on the exhibit, which configuration on interface Gi1/0/18 will allow the DHCP request to reach the DHCP server for the specified VLAN?

  A. Configuration A: console(config-if-Gi1/0/18)# switchport mode general console(config-if-Gi1/0/18)# switchport general pvid 20 console(config-if-Gi1/0/18)# switchport general allowed vlan add 20 console(config-if-Gi1/0/18)# switchport general allowed vlan remove 1

  B. Configuration B: console(config-if-Gi1/0/18)# switchport access vlan 10 console(config-if-Gi1/0/18)# service-policy in dhcp_250 console(config-if-Gi1/0/18)# switchport general allowed vlan add 20 console(config-if-Gi1/0/18)# switchport general allowed vlan remove 1

  C. Configuration C: console(config-if-Gi1/0/18)# switchport access vlan 10 console(config-if-Gi1/0/18)# ip dhcp snooping trust console(config-if-Gi1/0/18)# switchport general allowed vlan add 20 console(config-if-Gi1/0/18)# switchport general allowed vlan remove 1

  D. Configuration D: console(config-if-Gi1/0/18)# channel-group 100 mode active console(config-if-Gi1/0/18)# switchport access vlan 250 console(config-if-Gi1/0/18)# switchport general allowed vlan add 20 console(config-if-Gi1/0/18)# switchport general allowed vlan remove 1

  Correct Answer: A

• Question 3:

  Refer to the Exhibit.

  Switch-1(config)# radius server host 10.1.1.111 Switch-1(config-radius)# key "secretkey" Switch-1(config-radius)# exit Switch-1(config)# aaa authentication login "LOCAL-AUTH" local Switch-1(config)# aaa authentication login "REMOTE-AUTH" radius local Switch-1(config)# aaa authentication enable "REMOTE-AUTH" radius enable Switch-1(config)# aaa authentication login default tacacs local Switch-1(config)# aaa authentication enable default tacacs enable Switch-1(config)# line telnet Switch-1(config-telnet)# login authentication "REMOTE-AUTH" Switch-1(config-telnet)# exit Switch-1(config)# line ssh Switch-1(config-ssh)# login authentication default Switch-1(config)# exit Switch-1(config)# line console Switch-1(config-line)# login authentication "LOCAL-AUTH" Switch-1(config-line)# exit

  Which authentication method will be used if a user tries to log into the switch when accessing through SSH?

  A. RADIUS, then fails over to a local user account

  B. Local user account

  C. TACACS, then fails over to a local user account

  D. None

  Correct Answer: C

• Question 4:

  Which spanning tree feature will prevent unnecessary timeouts from DHCP servers?

  A. PortFast

  B. Loop Guard

  C. BPDU Flooding

  D. Root Guard

  Correct Answer: A

  Reference: https://www.dell.com/community/Networking-General/Advice-on-basic-STP-and-network-design/td-p/4434346

• Question 5:

  Which packet characteristics can policy-based routing be configured to match against?

  A. TTL, TCP Port, and L3 Packet Length

  B. L3 Packet Length, TTL, and 802.1p Priority

  C. TCP Port, L3 Packet Length, and 802.1p Priority

  D. TCP Port, TTL, and 802.1p Priority

  Correct Answer: C

• Question 6:

  A network administrator wants to configure an ACL to deny traffic for a specific source IP and source UDP port.

  Which type of ACL should be used?

  A. Layer 2 Standard ACL

  B. Layer 2 Extended ACL

  C. Layer 3 Standard ACL

  D. Layer 3 Extended ACL

  Correct Answer: D

• Question 7:

  How does the weighted Queue Scheduler prioritize packets?

  A. Scheduler prioritizes weighted queues over any strict queues

  B. Weights are calculated based on the number of packets

  C. Weights are used to calculate the number of bytes

  D. Weight is assigned to each port

  Correct Answer: C

  Reference: https://infohub.delltechnologies.com/static/media/6582046d-70f0-4ab6-ba72-2c0b9cf26649.pdf page 6

• Question 8:

  If VoIP traffic uses multiple QoS prioritization schemes, what refers to VoIP traffic?

  A. COS 2, DSCP 22, AF

  B. COS 2, DSCP 46, EF

  C. COS 5, DSCP 42, AF D. COS 5, DSCP 46, EF

  Correct Answer: D

• Question 9:

  In order to alter a packet's routing direction, which packet layers can policy-based routing use?

  A. Transport, Network, Link Layer, and Physical

  B. Link Layer, Physical, Presentation, and Session

  C. Network, Link Layer, Physical, and Session

  D. Application, Transport, Network, and Link Layer

  Correct Answer: A

• Question 10:

  What is a recommended configuration for an MLAG peer-link on a Dell EMC N-Series switch?

  A. Spanning tree must be disabled

  B. Spanning tree must be enabled

  C. Link must be a trunk port

  D. Link must contain multiple interfaces

  Correct Answer: B