正文

折扣号考试42007-09-30 10:44:00

【评论】 【打印】 【字体：大 中 小】 本文链接：http://blog.pfan.cn/ccna/29740.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:

46


In an effort to minimize traffic, an administrator decided to keep web traffic from causing the ISDN link to come up by denying WWW traffic to the 192.168.20.5 remote server. Two minutes after making changes to the configuration as shown in the graphic, the administrator notices that web traffic is still passing over the link. What is the most likely cause of the problem?
The dialer-group has not been applied to outbound traffic.
The access-list is incorrectly configured.
Broadcasts are creating "interesting" traffic and keeping the link active.
The command ip access-group 128 out is missing from the bri0/0 interface.

47
Which address does a bridge use to build its bridging table?
destination IP address
destination MAC address
source IP address
source MAC address

48
What is the default ISDN encapsulation used on Cisco ISDN routers?
SLIP
PPP
HDLC
VPP

49
What is the purpose of the IOS enable secret command?
to set password protection on incoming Telnet sessions
to set password protection on the console terminal
to allow a user access to User mode
to allow a user to enter a password that will be encrypted

50
Which of the following improves security in PPP authentication?
LCP
NCP
CHAP
PAP

51
How many bits are in IPv6 addresses?
16
32
64
96
128
258

52
What is the term for the cabling that connects the customer premises equipment to the CO switch?
demarc
local loop
final mile
DTE
trunk line

53
What enables routers to learn of destination networks?
proxy ARP
CAM table exchanges
host name tables
routing protocols
DNS lookups

54
Which reason is correct for having at least one true condition in an ACL?
If there is not a true statement, all packets are returned to the sender.
The implicit "deny any" statement will deny all traffic.
True conditions only test the status of the router.
You are not required to have a true statement in ACL.

55
What is the name of that point in a LAN where the responsibility of the network administrator ends and the responsibility of the telco begins?
point of presence
local loop
DTE
demarcation

56
Which of the following are functions of a WAN? (Choose three.)
permit real-time communication between users
allow users access to high bandwidth
provide full-time local service
provide e-mail and e-commerce services
connect physically adjacent devices
provide access to computers in other locations

57


All the routers in the network shown in the graphic are part of the same OSPF area. All the routers were powered up simultaneously, except Router E, which was brought online the following day. Which router will be the BDR after the network has converged?
Router A
Router B
Router C
Router D
Router E

58
Which type of ACL only checks the source address?
Extended ACL
General ACL
Source ACL
Standard ACL

59
When using distance-vector routing protocols in a frame relay environment with multiple DLCIs on a single physical router interface, split-horizon issues must be resolved. According to Cisco best practices, what should be configured to manage these issues?
a single network address
multiple LMIs
subinterfaces
multiple IP addresses on the same subnet

60
Which fields are common to the TCP and the UDP segments? (Choose two.)
source address
sequence number
acknowledgement number
options
checksum
destination port
Showing 4 of 5 <Prev Page: Next>
Close Window
All content copyright 1992-2007 Cisco Systems, Inc. Privacy Statement  and  Trademarks.

阅读(311) | 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