Cisco Introducing Cisco Data Center Networking - 640-911 Exam Questions [2026]

QUESTION NO: 1
When configuring a trunk port on a Nexus switch, what two options must be configured before the port will participate in a 802.1Q trunk group? (Choose two.)

A. enable spanning tree loop-guard B. configure 802.1Q encapsulation C. set port speed and duplex D. enable trunking E. configure a native VLAN

Correct Answer: D,E

QUESTION NO: 2
Which two network topologies are the most popular in switching? (Choose two.)

A. Token passing bus B. Extended star C. Bus D. Star E. Ring

Correct Answer: B,D

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QUESTION NO: 3
Which two statements describe two benefits of a star topology compared to a mesh topology? (Choose two.)

A. It has the absolute least likelihood of having a collision B. A single cable failure will not bring down the entire network. C. New stations can be added quickly and easily. D. There is not a single point of failure. E. Troubleshooting connectivity is easier.

Correct Answer: C,E

QUESTION NO: 4
When deploying 10BASE-2 Ethernet, what is the maximum cable length?

A. 100 meters B. 150 meters C. 150 feet D. 100 feet E. 185 feet F. 185 meters

Correct Answer: F

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QUESTION NO: 5
What is the correct format of an access control list on a Cisco Nexus switch to deny unencrypted Web traffic from any source to destination host 10.10.1.110?

A. N5K-A(config)# ip access-list 101N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 80N5K-A(config-acl)# permit ip any any B. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq 80 C. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq 80N5KA(config)#access-list 101permit ip any any D. N5K-A(config)#ip access-list 101N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 80

Correct Answer: A

QUESTION NO: 6
Refer to the exhibit.

Which hardware property of the bootup process can be determined about the router?

A. The router is set to automatically boot from bootflash on reloading. B. The router has 4 GB of memory to store the startup configuration files. C. The router has 32 MB of NVRAM to store the startup configuration files. D. The router is set to automatically boot from SATA disk on reloading. E. The router will stop at a boot loader prompt.

Correct Answer: A

QUESTION NO: 7
Which protocol is supported when OSPFv2 is used as the routing protocol?

A. UDP B. IPv4 C. IPv6 D. TCP

Correct Answer: B

QUESTION NO: 8
HOTSPOT

Correct Answer:

Explanation:
Use the show vlan command to see the number of VLANs configured in the 1006-4094 range.

QUESTION NO: 9
HOTSPOT

Correct Answer:

Explanation:
N7010-C1 will reply to ARPs that are received on Vlan11

QUESTION NO: 10
Which two networking devices forward data based on destination MAC address? (Choose two.)

A. Switch B. Bridge C. Router D. Hub E. Repeater

Correct Answer: A,B

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