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The diffserv approach to providing QoS i
The diffserv approach to providing QoS i
最全题库
2022-08-02
29
问题
The diffserv approach to providing QoS in networks employs a small, well-defined set of building blocks from which you can build a variety of( ). Its aim is to define the differentiated services (DS) byte, the Type of Service (ToS) byte from the Internet Protocol Version 4 ( )and the Traffic Class byte from IP Version 6, and mark the standardized DS byte of the packet such that it receives a particular forwarding treatment, or per-hop behavior (PHB), at each network node. The diffserv architecture provides a( )within which service providers can offer customers a range of network services, each differentiated based on performance. A customer can choose the ( )level needed on a packet-by-packet basis by simply marking the packet’s Differentiated Services Code Point (DSCP) field to a specific value.This ( )specifies the PHB given to the packet within the service provider network.问题1选项 A.services B.Users C.networks D.structures问题2选项 A.message B.Packet C.header D.package问题3选项 A.information B.Structure C.means D.framework问题4选项 A.performance B.Secure C.privacy D.data问题5选项 A.packet B.value C.service D.paragraph
选项
答案
解析
答案: A、C、D、A、B
在网络中提供QoS的diffserv方法采用一个小型,定义良好的构建块,您可以从中构建各种(71)。其目的是定义来自互联网协议版本4(72)的差分服务(DS)字节,服务类型(ToS)字节和来自IP版本6的流量类字节,并将数据包的标准化DS字节标记为它在每个网络节点接收到特定的转发处理或每跳行为(PHB)。diffserv架构提供(73)服务提供商可以在其中为客户提供一系列网络服务,每个网络服务都基于performance进行区分。客户可以通过简单地将分组的差分服务代码点(DSCP)字段标记为特定价值来逐个分组地选择所需的(74)级别。这(75)指定给予服务内的分组的PHB提供商网络。
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本试题收录于:
高级网络规划设计师题库软件水平考试初中高级分类
高级网络规划设计师
软件水平考试初中高级
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