Free Cisco 642-642 Exam Dumps Questions & Answers

SIMULATION - LAB

• A.  Please click console

QoS policy propagation through BGP (QPPB) supports which two QoS markers? (Choose two.)

• A.  COS
• B.  MPLS EXP
• C.  DSCP
• D.  QoS group
• E.  IP precedence

What describes the use of best-effort service with overprovisioning?

• A.  ensuring quality of service by deploying sophisticated prioritization and congestion management mechanisms
• B.  ensuring constant availability by provisioning multiple paths through the network
• C.  ensuring quality of service by providing more than the aggregate bandwidth required
• D.  ensuring availability and quality of service by always provisioning key services across at least two service provider networks
• E.  ensuring quality of service by being able to load balance across links in times of congestion

For which service is assured forwarding PHB used?

• A.  class selector
• B.  best effort
• C.  guaranteed bandwidth
• D.  expedited forwarding

In which two locations is the qos pre-classify command applied to support QoS preclassification over an IPSec/GRE tunnel? (Choose two.)

• A.  the class-map
• B.  the physical interface
• C.  the crypto map
• D.  the tunnel interface
• E.  the policy-map