正文

折扣号考试52007-09-30 10:44:00

【评论】 【打印】 【字体：大 中 小】 本文链接：http://blog.pfan.cn/ccna/29741.html

分享到：

 


Cisco Systems
Close Window

Assessment System
  1. Assessment Selection  
  2. Assessment Settings  
  3. Take Assessment  

Take Assessment - Voucher Exam - CCNA 4 WAN Technologies (Version 3.1)

Time Remaining:

61
Which of the following do switches send at regular intervals to eliminate switching loops?
bi-directional protocol data units
binary protocol data units
bridge protocol data units
buffered protocol data units

62
What reduces the problems of routing loops due to incorrect updates?
count to infinity
distance vector timers
event-triggered updates
split horizon

63
Routers and switches both perform important tasks in an internetwork. Which of the following are distinguishing differences between them? (Choose two.)
Routers are used more often in LAN topologies than switches.
Routers do not require an initial configuration to operate but switches do.
Routers and switches operate at different layers of the OSI model.
Routers and switches route different sets of protocols.
Routers block broadcasts but switches forward broadcasts.

64
When must data be sent by way of the default route?
The destination network is on a different network than the source.
The destination network is not directly connected to the router.
The destination network is a stub network.
There is no entry in the routing table for the destination network.

65
What is an advantage of the use of layers in the OSI reference model?
It breaks network communications into larger parts.
It increases complexity.
It prevents changes in one layer from affecting other layers.
It requires the use of single-vendor equipment for hardware and software communications.
Showing 5 of 5 <Prev Page: Next>
Close Window
All content copyright 1992-2007 Cisco Systems, Inc. Privacy Statement  and  Trademarks.

阅读(239) | 评论(0)


版权声明：编程爱好者网站为此博客服务提供商，如本文牵涉到版权问题，编程爱好者网站不承担相关责任，如有版权问题请直接与本文作者联系解决。谢谢！

评论

暂无评论
您需要登录后才能评论，请 登录 或者 注册