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最新642-845考试题库，完全覆盖CCNP认证642-845考试原题 ?????CISCO强调持有CISCO认证的人应具有相应技术, 为了确保思科证书的认受性,以及雇主会以思科认证作为评核员工才能的准,CISCO将在它的很多考试中增加模拟操作题,这更能正确地衡量出考生的真实水平,也能增加雇主对思科证书的重视,CISCO相信这样对CISCO、持有思科证书的人、以及雇主,长远来说都是有利的。 ????? Cisco认证将帮助你真正开始和发展IT网络职业生涯，选择一条符合你目标的职业道路，并获得专业技能和丰厚的回报。要获得Cisco认证相应的知识，你可以通过自学或者参加Cisco推荐的与考试要求最匹配的课程培训。???? 642-845 考试是 Cisco 公司的Optimizing Converged Cisco Networks ?认证考试官方代号，同样也是思科最新推出的一项很重要的认证考试。思科总裁John Chambers指出：未来思科考试模拟操作题将会增加,以提高思科认证权威性，有些考试中心的旧设备可能已不能应付需求,因此新的CISCO的考试的推出,在一定程度上减少了CISCO考试中心的数目。????? 而Testinside 的 642-845? 权威考试题库软件是 Cisco 认证厂商的授权产品，其所提供的642-845 题库根据642-845 考试的变化动态更新，在Cisco公司考题每次发生变化后，都会承诺2天内更新642-845 题库。在您使用Testinside的产品之后，还将提供90天的免费更新。确保642-845 考题的覆盖率始终都在95％以上；并且提供2种 642-845? 考题大师版本供你选择。 ?这里给出642-845 PDF 认证考试题库 PDF版本的试题免费下载地址 并且列出一些经典的642-845试题： 1. Which codec standard would provide the highest voice-quality, mean opinion score (MOS)?A. G.711, PCMB. G.728, LDCELPC. G.729, CS-ACELPD. G.729A, CS-ACELPAnswer: A 2. Which two statements regarding the Wireless LAN Solution Engine (WLSE) are true? (Choose two.)A. To support fault and policy reporting, the WLSE requires a Wireless Control System (WCS).B. When WLSE detects an AP failure, it automatically increases the power and cell coverage of nearby APs.C. WLSE requires the 2700 location appliance to offer location tracking.D. WLSE can locate rogue APs and automatically shut them down.E. WLSE configuration is done using the command line interface (CLI) or a WEB based template.Answer: BD 3. Voice activity detection (VAD) suppresses the transmission of silence patterns. On average, and assuming that a link carries at least 24 calls, what percentage of total bandwidth could VAD save?A. 5B. 15C. 25D. 35E. 45F. 55Answer: D 4. Refer to the exhibit. Both routers have been configured as VoIP gateways. They must also support traditional telephony devices to connect to analog telephones. Which two configuration changes would correctly support the voice requirements? (Choose two.)A. On ea