VUE/Prometric Code: 642-845
Exam: Optimizing Converged Cisco Networks
Q&A:184 Q&As
업그레이트:2010-06-28
CCNP 642-845 문제는 시험문제의 변화에 따라 업데이트가 될것입니다.시험문제가 매번 바뀐 후, 2일내에 시험문제 642-845 를 수정하여 다시 조정함으로서642-845:Optimizing Converged Cisco Networks가 시험문제의 점유률을 항상 96% 이상으로 확보합니다,
일부덤프문제보기:
15. What three statements are true about the various deployments of the 802.1x Extensible
Authentication Protocol (EAP)? (Choose three.)
A. EAP-FAST has the ability to tie login with non-Microsoft user databases.
B. EAP-TLS supports static passwords.
C. PEAP supports one-time passwords.
D. LEAP does not support multiple operating systems.
E. LEAP supports Layer 3 roaming.
F. PEAP does not work with WPA.
Answer: ACE
16. Refer to the exhibit. What variation of the 802.1x Extensible Authentication Protocol (EAP) uses this
authentication process?
A. LEAP
B. EAP-FAST
C. PEAP
D. EAP-TLS
Answer: A
17. 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A. WPA is based on the outdated IEEE 802.11i standard.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
18. Which two steps are executed in the deployment of Cisco AutoQoS for Enterprise? (Choose two.)
A. The customer uses SNMP statistics to create the policy.
B. QoS policy templates are generated and installed on the interface.
C. RTP is used to generate the policy.
D. LLQ, cRTP, and LFI are used to automatically discover the policy.
E. The auto-generated policy is manually optimized before implementation.
F. Auto-discovery is used to determine what traffic is on the interface.
Answer: BF
19. 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
20. 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
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