[Free] 2017(Oct) EnsurePass Dumpsleader Cisco 640-911 Dumps with VCE and PDF 71-80

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2017 Oct Cisco Official New Released 640-911
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Introducing Cisco Data Center Networking

Question No: 71

Which address is valid in the data link layer of the OSI reference model?

A. 192.168.20.1

B. 09-1B-02-1C-87

C. 07-AB-02-1F-35-C8

D. 172.16.10.12

Answer: C

Question No: 72

Which protocol is supported when OSPFv2 is used as the routing protocol?

  1. IPv6

  2. IPv4

  3. UDP

  4. TCP

Answer: B

Question No: 73

Which three options describe routers compared to switches? (Choose three.)

  1. use IP address tables for information lookup

  2. concerned with packet forwarding

  3. operate at Layer 3 of the OSI model

  4. operate at Layer 2 of the OSI model

  5. use MAC address tables for information lookup

  6. concerned with the local delivery of frames

Answer: A,B,C

Question No: 74

Which four statements indicate unique properties of VLAN 1 on Cisco Nexus switches? (Choose four.)

  1. VLAN 1 is used to flood multicast traffic.

  2. VLAN 1 cannot be deleted.

  3. VLAN 1 is used for Cisco Discovery Protocol.

  4. VLAN 1 is used for VTP advertisements.

  5. VLAN 1 defines a collision domain.

  6. VLAN 1 defines a broadcast domain.

Answer: B,C,D,F Explanation:

http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx- os/layer2/configuration/guide/Cisco_Nexus_7000_Series_NX- S_Layer_2_Switching_Configuration_Guide_Release_5.x_chapter4.html

Question No: 75 HOTSPOT

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Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

Answer:

Ensurepass 2017 PDF and VCE

Question No: 76

In an IEEE 802.3 Ethernet frame, what is the significance of the DSAP field?

  1. The DSAP field specifies the TCP or UDP port that is associated with the transport protocol.

  2. The DSAP field is only used on United States Department of Defense networks to indicate the information classification level.

  3. The DSAP field is only used in Ethernet II frames.

  4. The DSAP field indicates the network layer protocol.

Answer: D

Question No: 77

A design team is upgrading hubs to Layer 2 switches to decrease the number of collisions caused by media access control method. Which media access control protocol is affected by this change?

  1. CSMA/CA

  2. CSMA/CD

  3. CSU/DSU

D. 802.1q

Answer: B

Question No: 78

What is the minimum required command to enter global configuration mode on a Cisco Nexus switch?

  1. nexus# con

  2. nexus# configure

  3. nexus# configure global

  4. nexus# configure terminal

Answer: A Explanation:

Example: NX# con

Enter configuration commands, one per line. End with CNTL/Z. NX(config)#

PS. in IOS minimum quot;conf tquot;

Question No: 79

A network engineer has been tasked with connecting a Nexus 5548 switch to an older Catalyst 3750. After configuring the interfaces, the engineer noticed that the end hosts did not have network connectivity and the Nexus 5548 had the following log message:

%STP-2-BRIDGE_ASSURANCE_BLOCK: Bridge Assurance blocking port Ethernet1/27 VLAN0010 What command can solve this problem?

  1. configure no spanning-tree port type network on the Nexus 5548 interface

  2. configure spanning-tree mode rapid-pvstp on the Catalyst 3750

  3. configure switchport trunk native VLAN 10 on the Catalyst 3750 interface

  4. configure spanning-tree mode rapid-pvstp on the Nexus 5548

Answer: A

Question No: 80

Which two statements about configuring VLANs on the Cisco Nexus 7000 platform are true? (Choose two.)

  1. Software updates are disruptive to VLANs.

  2. VLANs with the same number are unique to their VDC.

  3. VLAN licensing is required for use.

  4. To change VLAN information, the administrator must be at the switch (config) # prompt.

  5. The command copy running-config startup-config will save changes to the VLAN database.

Answer: B,E

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