Read the summary and the most important questions on Routing and switching v5.0

• Test A

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• What are the features considered with IPv6 first-hop security? 3

  
  RA guard
  DHCP guard
  destination guard
  
  RDD

• What are three mode of PFR monitoring?

  active mode (based on Cisco SLA probes)
  passive mode (based on Netflow) 
  fast mode (based on Cisco SLA probes)

• Which factors does PFR use to calculate the best exit path? 3

  delay
  loss
  reachability
  
  dlr

• What can PFR passive monitoring measure for TCP flows? 4

  -delay
  -throughput
  -reachability 
  -packet loss

• What is the purpose of route constraints?

  to avoid sending unnecessary BGP VPNv4 or VPNv6 updates to the PE router

• What are the two main phases of PPPoE?

  Active discovery phase
  PPP session phase
  
  
  -Active discovery phase – PPPoE client locates a server. A session ID is assigned and the PPPoE layer is established.
  -PPP Session phase – PPP options are negotiated and authentication occurs.  

• What is the difference between single ISIS and multi topology ISIS?

  Single topology:
  
  

  • Shares path calculation with IPv4 routing Table. Only one SPF calculation.
  • It requires 1:1 correlation of IPv4 and IPv6 interfaces i.e Ipv4 and IPv6 interfaces should be same.

    
  
  Multiple topology:
  
  

  • Independent path calculation from IPv4 routing table. Separate SPF calculation.
  • IPv4 and IPv6 configuration are completely different i.e IPv4 & IPv6 interfaces can be asymmetric.

  
  https://networkingfolks.wordpress.com/2012/01/21/isis-single-topology-vs-multiple-topology/

• Which two statement about So0 checking in EIGRP OTP deployment is true?

  -During the import process, the So0, value in BGP is checked against the So0 value of the site map
  -During the reception of an EIGRP update, the So0 value in the EIGRP update is checked against the So0 value of the the site map on the ingress interface.
  
  http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ip-routing/whitepaper_C11-730404.html

• For which configuration sections must you specify the VRF name when configuring DMVPN? 3

  crypto keyring
  tunnel interface
  physical interface

• Which three statements about EVCs are true?

  LACP is supported on EVC ports
  PAGP is supported on EVC ports
  Spanning must use MST mode on EVC ports