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questions:

1. Which two statements are true about the digital audio in a VoIP network? (Choose two.)
A. Standard encoding techniques create an uncompressed digital data rate of 4000 bps.
B. Standard encoding techniques create an uncompressed digital data rate of 8000 bps.
C. Standard encoding techniques create an uncompressed digital data rate of 64,000 bps.
D. Voice quality is not a concern if compression is not used.
E. Two methods of quantization are linear and logarithmic.
F. Two methods of compression are u-law and a-law .
Answer: CE

2. Interface congestion is causing drops in voice packets and TCP packets. The drops result in jerky speech quality and slower FTP traffic flows. Which two technologies would proactively address the TCP transfer rate and the voice problems? (Choose two.) A. CBWFQ
B. LLQ
C. traffic shaping
D. WRED
Answer: BD

3. Which two statements are true about the various methods of implementing QoS? (Choose two.)
A. Cisco AutoQoS can be used repeatedly to apply a single QoS policy to multiple interfaces.
B. Cisco AutoQoS includes an optional web-based GUI for automating the configuration of QoS services.
C. Cisco AutoQoS provides capabilities to automate VoIP deployments.
D. The auto qos global configuration command is used to configure Cisco AutoQoS.
E. The Modular QoS CLI (MQC) is the best way to fine tune QoS configurations.
F. The SDM QoS wizard is the fastest way to implement QoS.
Answer: CE

4. Which three methods would help prevent critical network-traffic packet loss on high speed serial interfaces? (Choose three.)
A. policy routing
B. increase link capacity
C. WRED
D. CBWFQ
E. LFI
F. WFQ
Answer: BCD

5. What are three security problems with Wi-Fi Protected Access (WPA)? (Choose three.)
A. WPA is based on the outdated IEEE 802.11i standard.
B. WPA uses RSN, which uses the same base encryption algorithm as RC4.
C. WPA requires a hardware upgrade that may not be supported by all vendors.
D. WPA uses TKIP, which uses the same base encryption algorithm as WEP.
E. WPA is susceptible to a DoS attack when it receives two packets in quick succession with bad MICs, forcing the AP to shut down the entire Basic Service Set (BSS) for one minute.
F. WPA is susceptible to a security weakness when preshared keys are used.
Answer: DEF

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