Troubleshooting Cisco Data Center Unified Fabric (DCUFT): 642-980 Exam
642-980 Questions & Answers
Exam Code: 642-980
Exam Name: Troubleshooting Cisco Data Center Unified Fabric (DCUFT)
Q & A: 75 Q&As
QUESTION 1
What is one requirement for running FabricPath on a Cisco Nexus 7000 Series switches?
A. You must run NX-OS version 4.2 to run FabricPath
B. LAN_TRANSPORT_SERVICES_PKG license needs to be installed to run FabricPath
C. You must have an F Series module
D. ISSU needs to be disabled to run FabricPath
Answer: C
Explanation:
http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nxos/fabricpath/configuration/guide/fp_switching.html (Configuring fabricpath switching, see note)
QUESTION 2
A customer is deploying multihop FCoE in its network. Which guideline must the customer follow
with respect to VE ports to make this deployment possible?
A. VE-port interface binding to MAC addresses is supported.
B. A VE port is disabled for trunk mode by default.
C. Auto mode on the vFC interface is supported.
D. VE-port trunking is supported over FCoE-enabled VLANs.
Answer: D
Explanation:
http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/san_switching/513_n1_1/b
_Cisco_n5k_nxos_sanswitching_config_guide_rel513_n1_1_chapter_011.pdf (page 2, VE Ports,
see second bullet)
QUESTION 3
One of your Cisco Nexus Series interfaces has become disabled with the error message “DCXNo ACK in 100 PDUs”. How often are these acknowledgments exchanged?
A. 15 seconds
B. 60 seconds
C. 30 seconds
D. 45 seconds
Answer: C
Explanation:
https://supportforums.cisco.com/thread/2174593
QUESTION 4
Refer to the exhibit. Which command best represents where the control plane configurations are
applied?A. switch(config-vlan)# otv isis hello-interval 30
B. switch(config-if)# otv isis hello-interval 30
C. switch(config-if-overlay)# otv isis hello-interval 30
D. switch(config)# otv isis hello-interval 30
Answer: C
QUESTION 5
What are the minimum number and maximum number of members that a SAN PortChannel can
have?
A. 2, 32
B. 1 minimum with no maximum
C. 1, 16
D. 1, 32
E. 2, 16
F. 2 minimum with no maximum
Answer: E
QUESTION 6
Which tools can assist in the troubleshooting of FC-0 issues? (Choose three.)A. FC analyzer
B. Device Manager
C. SPAN
D. show interface fc1/1 optical-power-budget
E. a portable protocol analyzer
F. PAA
Answer: BCE
QUESTION 7
Refer to the exhibit. A customer is having a problem getting NPV to work. What is causing the
problem?
A. The core NPV switch ports are in the wrong domain.
B. The core NPV switch port is not an F port.
C. The core NPV switch port is not configured on both ends.
D. The core NPV switch port is not configured on the other end.
E. The core NPV switch port is in a shutdown state.
Answer: A
QUESTION 8
When configuring LLDP on Cisco Nexus 5548 Switch, what is the purpose of
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 to is the length of time in seconds to wait before performing LLDP initialization
on any interface.
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 is to set the length of time in seconds that a device should save LLDP information
received before discarding it.
Answer: D
Explanation:
http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/layer2/521_n1_2/b_5k_Lay
er2_Config_521N12_chapter_01011.pdf (page 2, see the table, step 2)
QUESTION 9
Your customer has a dual Cisco Nexus 7010 Switches in its data center. Customer’s
representatives want to know how to determine if Cisco IOS ISSU is possible on the switches as
they are upgrading to version 6.0.4. Which command is useful to determine if the upgrade will be
non-disruptive?
A. N7010 C1# show system redundancy ha status
B. N7010 C1# install all
C. N7010 C1# show incompatibility system
D. N7010 C1# show issu test bootflash:n7000-s1-system.6.0.4.bin
Answer: A
QUESTION 10
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. NPIV has been disabled on all switches.
C. The downstream switch does not have NPIV enabled.
D. NPIV has been configured but not enabled on the uplink port
Answer: A
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