￥ 250.00 920-803 Exam

免费下载 920-803 认证资料Demo

下载 920-803 PDF 认证考试资料
考试引擎下载

选择 pass4side 920-803 资料

920-803 考试是 Nortel 公司的 Nortel technology standards and protocol for ip telephony solutions 认证考试官方代号，pass4side 的 920-803 权威考试学习资料经过多名专业Nortel 认证工程师整理测试，pass4side 绝对保证第一次参加 920-803 考试的考生即可顺利通过，否则承诺免费更新！

1、Pass4Side考题大师920-803学习材料是您获取认证的完美组合，覆盖率极高，只要您使用本站的考试学习材料参加920-803 考试，您将一次轻松通过考试；

2、售后服务第一！我们相信要想在当今时代取得成功，必须为广大用户提供全套的周到细致的全程优质售后服务，只有客户满意了，我们才能发展。客户至上是我们Pass4Side考题大师的一贯宗旨；

3、Pass4Side实行“一次不过免费更新”承诺。如果您购买我们920-803的考题，只要不是首次通过，凭盖有PROMETRIC或VUE考试中心钢印的考试成绩单，我们将免费更新920-803最新学习材料，绝对保证您能继续获得有价值的学习材料；

4、本站920-803学习资料根据920-803知识点的的变化动态更新，在厂家知识点每次发生变化后，我们将尽快更新920-803材料知识点。在您购买我们的产品之后，我们将提供30天的免费更新。确保920-803学习材料的覆盖率

5、软件版本920-803 考试资料
优点：具有学习模式，测试模式，线上自动升级
缺点：仅限固定电脑使用，不可打印为文本，只能PC阅读

6、PDF 格式920-803 考试资料(部分最新更新科目已不提供PDF)
优点：不需下载安装软件，方便用户打印和携带，但也带来了可随意制的弊端，因此我们提醒用户不得随意公开或出售本站的920-803资料，一经发现立即取消其升级资格，且永久删除会员。
缺点：不具备测试模式，通过查看 pass4side.cn网站及查收我们的更新E-MAIL获取更新信息。
　
　
Exam : Nortel 920-803
Title : Nortel technology standards and protocol for ip telephony solutions


1. How does Real-Time Control Protocol (RTCP), the control protocol of Real-Time Protocol (RTP), assist RTP in handling packetized voice in an IP telephony environment?
A. Controls the RTP data flows.
B. Identifies sources and provides QoS feedback.
C. Interoperates with Transmission Control Protocol (TCP).
D. Controls the network bandwidth used by RTP data flows.
Answer: B

2. The basic attributes of Real-Time Protocol (RTP) provide for support of applications like voice and video. Which three attributes of RTP support real-time applications? (Choose three.)
A. Timestamping
B. Packet sequencing
C. Header compression
D. Payload identification
E. Packet retransmission
Answer: ABD

3. To achieve the QoS necessary to deliver voice between two points on a Frame Relay network, which two items are required to guarantee that voice quality is maintained? (Choose two.) Assume that a Permanent Virtual Circuit (PVC) is available to address converged voice and data.
A. a Variable Bit Rate (VBR) service type
B. a WAN access device that shapes traffic
C. a WAN access device that does NOT fragment voice IP packets
D. a WAN access device that can manage First-In, First-Out (FIFO) queuing
E. a Committed Information Rate (CIR) large enough to address the total peak voice traffic plus a portion allocated for Best-Effort (BE) data
Answer: BE

4. Which CODEC delivers the greatest compression?
A. B. 711
C. D. 723.1
E. F. 726
G. H. 729
I. J. 729A
Answer: C

5. A video conference is in progress between two networked locations using gigabit Ethernet. The video conferencing application is using User Datagram Protocol (UDP) to transport the video and audio data. Why should UDP be used instead of Transmission Control Protocol (TCP)?
A. TCP CANNOT handle streaming data applications.
B. UDP is better than TCP at seamlessly synchronizing voice and video together.
C. UDP serves as an efficient transport for handling real-time application traffic.
D. UDP uses less bandwidth than TCP in a WAN, but more bandwidth than TCP in a LAN.
Answer: C