300-420 Free Practice Test

Which QoS feature responds to network congestion by dropping lower priority packets?

1. A. CBWFQ
2. B. tail drop
3. C. WRED
4. D. strict priority

Correct Answer: C

Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM
domain?

1. A. Embedded RP
2. B. BSR
3. C. Auto-RP
4. D. Static RP

Correct Answer: B

When IPsec VPNs are designed, what is a unique requirement if support for IP Multicast is required?

1. A. encapsulation of traffic with GRE or VTI
2. B. IPsec forwarding using transport mode
3. C. additional bandwidth for headend
4. D. IPsec forwarding using tunnel mode

Correct Answer: A

An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?

1. A. shaping
2. B. WRED
3. C. policing
4. D. RED

Correct Answer: A

An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured VLANs must be grouped in two SIP instances. Which standards-based Spanning Tree technology supports this design solution?

1. A. MSTP
2. B. RSTP
3. C. Rapid PVST
4. D. STP

Correct Answer: A