642-980 Guide

Finding Renew 642-980 prep

Q1. Refer to the exhibit. 

The customer informs you of a problem they are encountering. What is the cause of the problem? 

A. The core upstream switch does not have NPIV enabled. 

B. The downstream switch does not have NPIV enabled. 

C. NPIV has been disabled on all switches. 

D. NPIV has been configured but not enabled on the uplink port. 

Answer:


Q2. You are no longer seeing updates to the device-aliases database on your Cisco Nexus 5596UP Switch. Which command is useful to determine if the scope of Cisco Fabric Services application distribution was being administratively limited? 

A. N5K2# show cfs region 

B. N5K2# show cfs scope 

C. N5K2# show cfs locale 

D. N5K2# show cfs acl 

E. N5K2# show cfs firewall 

Answer:


Q3. FCoE traffic from C200-1 on VSAN 13 is not being switched through the network. Which statement explains the cause of the problem? 

A. The LAN switchport on N5K2 must be configured as a trunk. 

B. VLAN 1013 on N5K2 is not allowed on the LAN. 

C. The vFC on N5K2 that is associated with VSAN 13 is in the wrong port mode. 

D. The M1 card on the Nexus 7000 switch does not support FCoE. 

Answer:


Q4. When configuring LLDP on Cisco Nexus 5548 Switch, what is the purpose of LLDP hold time global configuration command? 

A. LLDP holdtime option is to set the length of time in milliseconds that a device should save LLDP information received before discarding it 

B. LLDP holdtime option is to set the length of time in seconds that a device should save LLDP information received before discarding it 

C. LLDP holdtime option to is the length of time in milliseconds to wait before performing LLDP initialization on any interface 

D. LLDP holdtime option to is the length of time in seconds to wait before performing LLDP initialization on any interface 

Answer:


Q5. Which command on a Cisco Nexus 5000 Series Switch will show the interface information for port 10 on the connected FEX 100? 

A. show interface Ethernet 100/10 

B. show fex 100 interface Ethernet 1/10 

C. show interface Ethernet 100/1/10 

D. show interface Ethernet 1/100/10 

Answer:


Q6. Fibre Channel traffic on VSAN 12 between N5K2 and MDS9124-2 is degraded. Which statement explains the cause of this degradation? 

A. Performance is decreased by half due to the incorrect port type being used. 

B. The load-balancing scheme for VSAN 12 should be src-id/dst-id. 

C. B2B credits on N5K2 should be increased to 128. 

D. A VSAN port channel must be configured between N5K2 and MDS9124-2. 

Answer:


Q7. While the Nexus 7010 switches are configured with vPC, the Nexus 5000 switch connections to each Nexus 7010 are configured as regular port-channels. Which statement best describes the problem affecting the port channel on N5K1? 

A. LACP is not configured to initiate negotiations. 

B. N5K1 must also be configured with vPC. 

C. load-balancing is not configured correctly on N5K1. 

D. The remote ends of the port-channel on N5K1 cannot use the same interface 

Answer:

Explanation:

The remote ends of the port-channel on N5K1 cannot use the same interface.

If you look at the remote ends and issue the “show interface port-channel, you will see thatonly one physical interface is assigned to the port channel.


Q8. The installation of a new OTV network connecting two data centers via a service provider LAN has failed verification steps. Which statement explains why certain types of data are not being successfully transferred across the OTV network? 

A. The number of extended VLANs across all configured overlays may be greater than 256. 

B. The number of MAC addresses on either edge device may exceed 4000. 

C. The additional 42-byte OTV overhead, along with the DF bit being set, may cause the service provider to drop packets based on their 1500 MTU settings. 

D. Having more than two edge devices per site is not supported. 

Answer:


Q9. Which command would you use to check the status of your configuration synchronization peer? 

A. N5K2# show switch-profile peer 

B. N5K2# show config-sync peer 

C. N5K2# show synch peer 

D. N5K2# show peer status 

E. N5K2# show switch peer 

Answer:


Q10. Which statement is true regarding the port channel 100 and 101 configurations between the Nexus 7010 switches? 

A. The vPC assignments on N7010-C2 are incorrectly swapped 

B. N7010-C1 is not allowing any active VLAN traffic to pass on Po100 and Po101. 

C. LACP is not configured to initiate negotiations. 

D. The vPC peer-keepalive is down between the two Nexus 7000 switches. 

Answer:

Explanation:

The vPC assignments on N7010-C2 are incorrectly swapped.

The “show vpc” command will show you that the keepalives are active, and that there areactive VLANs. The “show port-channel summary” command shows that LACP is enabled.


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