QUESTION 61 How does RSVP-AT, QoS Interworking provide L3 QoS over ATM (L2)?

A. It builds an SVC with the desired parameters for each L3 flow.

B. It maps each L3 flow to a separate soft PVC that is configured with the appropriate parameters.

C. It dynamically builds a sub-interface for each flow and uses WFQ to achieve its bandwidth and latency requirements.

D. It dynamically allocates the L2 flow to an existing VC that can guarantee the bandwidth and latency requirements. Answer: A

QUESTION 62 You are using IP to ATM CoS. Which action can be configured to be automatically taken should a VC in a VC bundle fail?

A. The VC can be remapped to a different bundle.

B. The VC can be declared down and an alternate route requested.

C. The circuit data can be transferred or "bumped" to a lower priority VC.

D. The circuit data can be divided equally between the remaining VCs in the bundle. Answer: C

QUESTION 63 How is IP to ATM CoS supported in a single VC?

A. The IP Precedence bits are mapped into the unused upper bits of the VPI field. They are treated accordingly as they are switched through the ATM network.

B. The router at the edge of the ATM network sets the ATM CLP based on the IP Precedence bits. Lower priority packets are transported in lower priority cells. They are treated accordingly as they are switched through the ATM network.

C. WRED/DWRED is used in the routers at the edge of the ATM network. Based on the IP Precedence bits, IP traffic is subjected to different drop probabilities (and therefore priorities) as IP traffic coming into a router competes for bandwidth on the ATM VC.

D. PQ-WFQ is used in the routers at the edge of the ATM network. Based on the IP Precedence bits, IP traffic is then properly queued and de-queued as IP traffic competes for bandwidth on the ATM VC. Answer: C

QUESTION 64 when the ingress ATM interface discards a fragment?

A. Incomplete data packets are sent and the entire data packet must be resent.

B. The entire data packet is discarded at the ingress interface and must be resent.

C. Incomplete data packets are sent and discarded packet fragments must be resent.

D. Data packets may be sent in cells that are out of order, causing the entire packet to be resent. Answer: B, D

QUESTION 65 What are three capabilities of the route map used in policy-based routing? (Choose three)

A. Rate limiting

B. Packet marking

C. Packet classification

D. Intelligent packet discard

E. Defining customized routing paths Answer: B, C, E

QUESTION 66 What are two services provided through Committed Access Rate (CAR)? (Choose two)

A. Policing

B. Classification

C. Link efficiency

D. Traffic shaping

E. Congestion avoidance Answer: A, B

QUESTION 67 How do you enable PGM on Cisco routers?

A. Router#(config) ip pgm

B. Router#(config) set pgm

C. Router#(config) ip pgm router

D. Router#(config-if) ip pgm router

E. Router#(config-if) ip pgm enable Answer: D

QUESTION 68 What is the main purpose of the Cisco IOS QPPB feature?

A. It provides flow-based WRED support to External BGP peers.

B. QPPB enables traffic shaping on BGP enabled WAN interfaces.

C. It conveys IP Precedence or QoS Group to destinations using BGP communities.

D. It allows non-CEF enabled routers to support QoS and BGP by tagging routes in the BGP table.

E. It provides QoS policy in BGP networks by allowing centralized QoS configuration confederations. Answer: C

QUESTION 69 What is the reason basic multicasting is problematic and unreliable?

A. IP transport

B. TCP transport

C. UDP transport

D. ICMP transport

E. RTMP transport Answer: C

QUESTION 70 Which Designated Forwarder (DF) election mechanism is used to advertise a router's unicast metric to reach the rendezvous point?

A. Pass

B. Offer

C. Notify

D. Winner

E. Back off Answer: B