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Testking cisco 642-845

Vendor: cisco
Exam Code: 642-845
Exam Name: BSCI – Building Scaleable Cisco Internetworks (CCNP )
cisco 642-845 value pack
642-845 Q & A with Explanations + 642-845 Study Guide + 642-845 Preparation Labs

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Question: 1
Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs
feature (QoS pre-classify) provides packet classification and applies appropriate QoS service on
tunnel interfaces? (Choose three.)
A – IP precedence bits
B – DSCP bits
C – original port numbers
D – DE bits
E – source IP address
F – destination IP address
Answer: C, E, F
Question: 2
Which two QoS statements are true about the use of the SDM QoS wizard? (Choose two.)
A – Business-critical traffic includes VoIP and voice signaling packets.
B – SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and
IPsec tunnels.
C – SDM can provide QoS for real-time traffic and business-critical traffic.
D – SDM creates a custom-queuing (CQ) or a priority-queuing (PQ) policy.
E – SDM creates a low latency queuing (LLQ) service policy with its associated classes.
F – When allocating bandwidth, values can be entered in either bandwidth percentage or kilobytes
per second (kBps).
Answer: C, E
Question: 3
Which two statements about Cisco AutoQoS are true? (Choose two.)
A – A QoS service policy must already be enabled on the interface before Cisco AutoQoS can be
enabled.
B – Any interface at or below 1.54
Mbps is classified as a low-speed interface.
C – AutoQoS uses Cisco network-based application recognition (NBAR) to identify various
applications and traffic types.
D – Cisco Express Forwarding (CEF) must be enabled at the interface or ATM PVC.
E – Cisco NBAR is a prerequisite for CEF.
F – On a serial interface, before AutoQoS is enabled, the clock rate command must be used to
specify a bandwidth other than the default 1.54Mbps.
Answer: C, D
Question: 4
When a router converts analog signals to digital signals as part of the VoIP process, it performs
four steps.
Which set of steps contains the steps in their correct sequence?
A – encoding
optional compression
quantization
sampling
B – encoding
quantization
optional compression
sampling
C – optional compression
encoding
sampling
quantization
D – optional compression
sampling
encoding
quantization
E – sampling
quantization
encoding
optional compression
F – sampling
quantization
optional compression
encoding
Answer: E
Question: 5
What are three staid Extensible Authentication Protocol (EAP) types? (Choose three.)
A – LEAP
B – EAP-FAST
C – EAP-TLS
D – EAP-AES
E – WEAP
F – WEP
Answer: A, B, C

Testking 642-845
Questions and Answers : 159 Q&As
Updated: 2008-12-10
Price: $89.99

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