2. 计算机
  3. The network layer provides services to the transport layer．It can be based on either (1)．In both cases，its main job is (2) packe

The network layer provides services to the transport layer．It can be based on either (1)．In both cases，its main job is (2) packe

admin2010-03-08  32
问题 The network layer provides services to the transport layer．It can be based on either (1)．In both cases，its main job is (2) packets from the source to the destination．
   In network layer，subnets can easily become congested，increasing the delay and (3).
   for packets．Network designers attempt to avoid congestion by proper design．Techniques include (4) policy，caching，flowcontrol，and more．
   The next step beyond just dealing with congestion is to actually try to achieve a promised quality of service．The methods that can be used for this include buffering at the client，traffic shaping，resource (5)，and admission control．Approaches that have been designed for good quality of service include integrated services(including RSVP) ，differentiated services， and MPLS．  
(4)
选项 A、abandonment
B、retransmission
C、checksum
D、synchronism
答案B
解析
转载请注明原文地址:https://kaotiyun.com/show/SUQZ777K
本试题收录于： 网络规划设计师上午综合知识考试题库软考高级分类
0

网络规划设计师上午综合知识考试

软考高级

相关试题推荐
随机试题
最新回复(0)