Cisco 640-875 Online Practice Questions and Exam Preparation

Cisco 640-875 Online Questions & Answers

• Question 51:

  Which three are features present on both ICMPv4 and ICMPv6? (Choose three.)

  A. connectivity tests
  B. address assignment
  C. information error messaging
  D. address resolution
  E. mobile IPv4 support
  F. multicast group management
  G. mobile IPv6 support
  H. fragmentation needed notification
  A. connectivity tests
  C. information error messaging
  H. fragmentation needed notification

• Question 52:

  Which two values must you configure when you enable a DHCP server on a Cisco router? (Choose two.)

  A. inside and outside NAT interfaces
  B. client DNS domain name
  C. default gateway
  D. router ID
  E. VLAN assignment
  B. client DNS domain name
  C. default gateway

• Question 53:

  Refer to the exhibit.

  

  How many IP addresses does Router1 have that are available for DHCP clients?

  A. 100
  B. 99
  C. 254
  D. 199
  B. 99

• Question 54:

  DRAG DROP

  Drag the routers from the left and drop them on the layer that they belong to on the right. Not all options on the left are used.

  Select and Place:

  

  

• Question 55:

  DRAG DROP

  Drag the routing protocols on the left and drop them on the correct descriptions on the right. Not all routing protocols on the left are used.

  Select and Place:

  

  

• Question 56:

  Which two statements about Cisco IOS XR NTP configuration are true? (Choose two.)

  A. A network device can obtain NTP time information in three ways: polling the NTP server, listening to NTP broadcasts, and listening to NTP multicasts.
  B. NTP authentication supports MD5, SHA1, or SHA2.
  C. Client mode is a peer-to-peer mode.
  D. The two types of poll-based NTP associations are client mode and symmetric active mode.
  E. The Cisco IOS-XR implementation of NTP supports stratum 1 service.
  F. In client mode, clients can dynamically learn the NTP sever IP address by listening to the NTP server broadcasts or multicasts.
  A. A network device can obtain NTP time information in three ways: polling the NTP server, listening to NTP broadcasts, and listening to NTP multicasts.
  D. The two types of poll-based NTP associations are client mode and symmetric active mode.

• Question 57:

  DRAG DROP

  Drag the each Cisco IOS XR command from the left and drop it on the correct output description on the right.

  Select and Place:

  

  

• Question 58:

  Which Cisco IOS XR CLI command displays the running state of each line card (including the fan tray) on the Cisco ASR 9000 Series Router?

  A. RP/0/RSP0/CPU0:PE1#show platform
  B. RP/0/RSP0/CPU0:PE1(admin)#show platform
  C. RP/0/RSP0/CPU0:PE1#show hw-module fpd location all
  D. RP/0/RSP0/CPU0:PE1(admin)#show hw-module fpd location all
  E. RP/0/RSP0/CPU0:PE1#show version
  F. RP/0/RSP0/CPU0:PE1(admin)#show version
  B. RP/0/RSP0/CPU0:PE1(admin)#show platform

• Question 59:

  A network engineer is asked to protect the PE routers by configuring Control Plane Policing. How does this work?

  A. It encrypts packets before transmitting them across a network
  B. It prevents network data interception
  C. It prevents unauthorized access into networking devices
  D. It prevents and protects the control plane of Cisco IOS routers and switches against reconnaissance and denial-of-service (DoS) attacks
  D. It prevents and protects the control plane of Cisco IOS routers and switches against reconnaissance and denial-of-service (DoS) attacks

• Question 60:

  You are informed by your ISP that your network participated in a DDoS attack, which sent spoofed IP packets. The ISP was able to block the packets. To prevent similar attacks, which feature should you use?

  A. Unicast Reverse Path Forwarding
  B. broadcast storm control
  C. directed broadcasts
  D. dynamic routing protocols
  A. Unicast Reverse Path Forwarding