640-911 | Exact 640-911 Dumps 2021
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Free demo questions for Cisco 640-911 Exam Dumps Below:
NEW QUESTION 1
In an IPv6 address, how many bits are used for the interface identifier?
- A. 48
- B. 16
- C. 64
- D. 128
- E. 10
NEW QUESTION 2
A network engineer is tasked with installing a new switch into the network access layer. The switch needs to see VTP data, but does not need to participate in the VTP domain. What VTP mode should the switch be configured for?
- A. client
- B. transparent
- C. server
- D. off
- E. active
NEW QUESTION 3
Which two layers of the OSI model relate to the transmission of bits over the wire and packet forwarding based on destination IP address? (Choose two.)
- A. 1
- B. 2
- C. 3
- D. 4
- E. 5
Explanation: Bits - 1 layer Packets - 3 layer
NEW QUESTION 4
Which layer of the OSI model is associated with the reliable transmission of datagrams?
- A. Datagram
- B. Routing
- C. Network
- D. Data link
- E. Transport
- F. Transmission
- G. Session
NEW QUESTION 5
Which protocol is supported when OSPFv2 is used as the routing protocol?
- A. IPv6
- B. IPv4
- C. UDP
- D. TCP
NEW QUESTION 6
What are four security features that are included in Cisco Nexus Operating System? (Choose four.)
- A. Cisco TrustSec
- B. IEEE 802.1Qau
- C. CoPP
- D. port security
- E. PIM
- F. SSL VPN
- G. IPsec VPN
- H. ACLs
NEW QUESTION 7
What are three modular Layer 2 processes in Cisco Nexus Operating System? (Choose three.)
- A. UDLD
- B. PIM
- C. HSRP
- D. STP
- E. Cisco Discovery Protocol
- F. OSPF
Explanation: "PIM is IP routing protocol-independent and can leverage whichever unicast routing protocols are used to populate the unicast routing table, including Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), and static routes. PIM uses this unicast routing information to perform the multicast forwarding function. Although PIM is called a multicast routing protocol, it actually uses the unicast routing table to perform the RPF check function instead of building up a completely independent multicast routing table. Unlike other routing protocols, PIM does not send and receive routing updates between routers." http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_papers/mcst_ovr.html#wp1009068
"Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a faulttolerant
•In the configuration procedures, the specified interface must be a Layer 3 interface:" http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_55_se/configuration/guide/
OSPF (Open Shortest Path First) - routing protocol.
NEW QUESTION 8
Which command should you use to configure a Cisco Nexus switch port for Layer 2 operation?
- A. nexus(config-if)#switchport
- B. nexus(config-if)#layer-2
- C. nexus(config-if)#routed
- D. nexus(config)#interface vlan 10nexus(config-if)#switchport
Explanation: "If you want to configure a Layer 3 interface for Layer 2, enter the switchport command. Then, if you change a Layer 2 interface to a routed interface, enter the no switchport command." http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/command/reference/l ayer2/n5kl2_cmds_n.pdf
NEW QUESTION 9
If a Nexus switch receives a frame and no MAC table entry is found for the destination, what will take place?
- A. The frame will be dropped.
- B. The frame will be flooded.
- C. The sender will be notified.
- D. The destination address will be learned.
NEW QUESTION 10
Which device forwards data based on the destination IP address?
- A. repeater
- B. bridge
- C. switch
- D. router
- E. hub
NEW QUESTION 11
A network engineer has multiple network devices to choose from to connect 10 PCs to a network. Requirements include that packet collisions are minimized for each client and that the physical network topology must be highly scalable. Which two connectivity options should the engineer use? (Choose two.)
- A. Connect each of the 10 client PCs to a network switch.
- B. Use a star physical network topology.
- C. Connect each of the 10 client PCs to a network router.
- D. Connect each of the 10 client PCs to a network hub.
- E. Use a ring physical network topology.
- F. Use a mesh physical network topology.
NEW QUESTION 12
Which two networking devices operate at Layer 1 of the OSI model? (Choose two.)
- A. Repeater
- B. Bridge
- C. Switch
- D. Router
- E. Hub
Explanation: It defines the electrical and physical specifications of the data connection. It defines the relationship between a device and a physical transmission medium (e.g. a copper or fiber optical cable). This includes the layout of pins, voltages, line impedance, cable specifications, signal timing, hubs, repeaters, network adapters, host bus adapters (HBA used in storage area networks) and more."
NEW QUESTION 13
What is the Cisco Nexus Operating System command to define a port as a Layer 3 port?
- A. Port routed
- B. No switchport
- C. l3 switchport
- D. Port switching off
Explanation: "If you want to configure a Layer 3 interface for Layer 2, enter the switchport command. Then, if you change a Layer 2 interface to a routed interface, enter the no switchport command. " http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/command/reference/l ayer2/n5kl2_cmds_n.pdf
NEW QUESTION 14
NEW QUESTION 15
What is the default bridge ID priority for Rapid PVST+?
- A. 128
- B. 32769
- C. 32768
- D. 4096
NEW QUESTION 16
What option tests hardware to verify that all components of the device are operational and present?
- A. NVRAM
- B. POST
- C. BIOS
- D. Bootstrap
NEW QUESTION 17
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 80
- 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 80N5K- A(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 80N5K-A(config-acl)# permit ip any any
NEW QUESTION 18
What does RIPv1 send to its neighbors?
- A. Information about changed routes
- B. Information about new routes
- C. The entire routing table
- D. Information about deleted routes
Explanation: "On receiving the Routing table, the router processes each entry of the routing table as per the following rules"
NEW QUESTION 19
An engineer wants to repurpose a Cisco Nexus 7010 Switch for use in a lab and needs to restore the switch to factory defaults. Which two commands are required? (Choose two.)
- A. write erase boot
- B. write erase debug
- C. copy running-config startup-config
- D. reboot
- E. reload
- F. copy startup-config running-config
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