Cisco 640-911 Online Practice Questions and Exam Preparation

Cisco 640-911 Online Questions & Answers

• Question 91:

  What are three reasons that switches supersede bridges? (Choose three.)

  A. Smaller frame buffers decrease latency.
  B. Forward, filter, or flood frames.
  C. Multiple simultaneous communications between ports.
  D. Larger inspection engine allows for higher throughput.
  E. Switches have many ports.
  B. Forward, filter, or flood frames.
  C. Multiple simultaneous communications between ports.
  E. Switches have many ports.

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  http://docwiki.cisco.com/wiki/Bridging_and_Switching_Basics

• Question 92:

  Which two options describe services that are provided by TCP? (Choose two.)

  A. session multiplexing
  B. EtherTypes identify destination services
  C. connection-oriented
  D. best-effort packet delivery
  E. binary translation
  A. session multiplexing
  C. connection-oriented

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  "TCP is a connection-oriented protocol." http://www.diffen.com/difference/TCP_vs_UDP

• Question 93:

  Which option would you use to exit the Cisco Nexus Operating System interface configuration mode and return to the exec prompt?

  A. nexus(config-if)#Ctrl-Cnexus#
  B. nexus(config-if)#Ctrl-Znexus#
  C. nexus(config-if)#Ctrl-Enexus#
  D. nexus(config-if)#exitnexus#
  B. nexus(config-if)#Ctrl-Znexus#

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  "Ctrl-Z Ends a configuration session, and returns you to EXEC mode. When used at the end of a command line in which a valid command has been typed, the resulting configuration is first added to the running configuration file." http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_1/nx- os/fundamentals/configuration/ guide/Cisco_Nexus_7000_Series_NXOS_Fundamentals_Configuration_Guide__Release_4.1_chapter4.html PS. "exit" return to global config only

• Question 94:

  What network topology consists of each node connecting to a central device?

  A. bus
  B. mesh
  C. star
  D. spine and leaf
  C. star

• Question 95:

  Which situation results in a flashing blue status LED on a Cisco Nexus 7000 switch I/O module?

  A. The switch has just been powered on, and the module is resetting.
  B. The module is resetting and both ejector levers are out.
  C. The module has been inserted during the initialization process.
  D. The module could not power up because of insufficient power.
  E. The operator has activated this LED to identify this module in the chassis.
  E. The operator has activated this LED to identify this module in the chassis.

• Question 96:

  At which layer in the OSI stack does the Hypertext Transfer Protocol operate?

  A. Layer 1
  B. Layer 2
  C. Layer 3
  D. Layer 4
  E. Layer 5
  F. Layer 6
  G. Layer 7
  G. Layer 7

• Question 97:

  Which two networking devices operate at Layer 1 of the OSI model? (Choose two.)

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

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  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." http://en.wikipedia.org/wiki/OSI_model

• Question 98:

  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
  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
  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

• Question 99:

  HOTSPOT

  

  Hot Area:

  

  

• Question 100:

  At which layer of the OSI Model is TCP traffic encapsulated?

  A. transport
  B. data-link
  C. presentation
  D. application
  A. transport