思科认证CCNA考试的几点建议

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要想通过思科认证CCNA考试，条件之一是英语一定要好；其次，对OSI参考模型，TCP／IP模型有很好的掌握；第三，使用过CISCO的低端路由器；第四，对交换机的运作功能有一些基础。
: L( P: M+ p9 I# p; X4 ^下面是关于思科认证CCNA的一些考试例题，供参考。
A.CCNA Certification Exam Objective
The CCNA (640-407)exam will consist of a combination of the following objective
: `" z/ J& w# y# z1.Identify and describe the functions of each of the seven layers of the OSI reference model
- P/ G4 X7 z) ]+ i5 `# V2.Describe connection-oriented network service and connectionless network service ,and identif the key differences between them.
  C6 n: o3 c5 @/ W6 }3 b9 L3.Describe data link addresses and network addresses,and identify the key differences between them
4.Define and describe the function of a MAC address.
, \; q  J! l8 G; _5.Define flow control and describe the three basic metthods used in netwoeking
2 j. W% p! l1 Z4 w, _& g6.Differentiate between the following WAN services:frame relay,isdn/lapd,hdlc,%26amp;ppp
7.Log into a router in both user and privileged modes
9 L  r$ L! y8 t9 ?9 Z: o9 r: Y8.Use the context-sensitive help facility
9.Use the command history and editing features
* r* Q) B- W4 r% j8 D2 C: G. u10.Examine router elements(RAM,ROM,CDP,show)
11.Manage configuration files from the privileged exec mode
& Y- w4 j5 v& D% C; i8 J12.Control router passwords,identification and banner
13.Identify the main cisco IOS commands for router startup
14.Check an initial configuration using the setup command

. K' ?1 V( P5 ]# @' Z2 x" w, a15.Copy and manipulate configuration files

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</p>16.List the commands to load cisco IOS software from:flash memory,a tftp server,or ROM
0 t1 ^7 G; s0 H9 O" K9 O1 H17.Prepare to backup,upgrade,and load a backup Cisco IOS software image
- _+ b, d& u* i- k* Q) o" Y* `% G18.List the key internetworking functions of the OSI network layer and how they are performed in a router
19.Describe the two parts of network addressing,then identify the parts in specific protocl address examples
& a7 u$ T) v5 o- g20.List problems that each routing type encounters when dealing with topology changes and describe techniques to reduce the number of theseproblems
6 ?4 h0 n$ B! e1 J& p# D21.Explain the services of separate and integrated multiprotocol routing
; M8 q  b7 ~' l/ \2 u( J' K22.Describe the different classes of IP address
23.Configure IP address
24.Verify IP address
& G* u" y* y8 h8 ~" @8 n% ]25.Prepare the initial configuration of your router and enable ip
26.Add the RIP routing protocol to your configuration
9 s: s9 m( o- b0 P7 W& x# O27.Add the IGRP routing protocol to your configuration
( o. ?/ C! S3 j8 g. h/ @, O28.List the required IPX address and encapsulation type
29.Enable the Novell IPX protocol and configure interfaces
30.Monitor Novell IPX operation on the router
8 q4 J- ]& Z8 S31.Recognize key frame relay terms and features
( B, j4 b7 Q& W5 X5 L32.List commands to configure frame relay LMIs,maps,and subinterfaces
33.List commands to monitor frame relay operation in the router
34.Identify PPP operations to encapsulate WAN data on cisco routers
9 c$ J: \9 s- l! E7 y* e  O35.Configure standard access lists to figure IP traffic
36.Monitor and verify selected access list operations on the router
# N7 X8 t- |7 w" I37.State a relevant use and context for isdn networking
38.Identify isdn protocols,function groups,reference points,and channels
39.Describe cisco's implementation of isdn bri
2 _9 |6 a7 R4 S; {6 V& F- q40.Describe the advantages of LAN segmentation
41.Describe LAN segmentation using bridges
+ [3 V/ j8 H. l  l% q+ S; Q$ Y
$ |. S& m& Q& V# ?3 f42.Describe LAN segmentation using routers

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</p>43.Describe LAN segmentation using switches
44.Name and describe two switching methods
5 J0 T7 K2 `( c' e45.Describe full and half duplex Ethernet operation
46.Identify at least 3 reasons why the industry uses a layered model
# R+ M4 @7 v& v2 U) S; C47.Identify the functions of each layer of the ISO/OSI refernce model
% o6 C. O3 e8 |5 l3 B& m- A: G  G48.Define and explain the 5 conversion steps of data encapsulation
4 r5 z" W: y# v; O49.Identify the functions of the TCP/IP transport-layer protocols
& g! ^! N! v8 a" x50.Identify the functions of the TCP/IP network-layer protocols
51.Identify the functions performed by ICMP
52.Configure extended access lists to filter IP traffic
8 x' ~9 i8 W; [+ }3 N. P* _53.Configure IPX access lists and SAP filters to control basic Novell traffic
54.Monitor and verify selected access list operations on the router
! |5 |1 A! F8 t/ {9 Z# J55.Describe network congestion problem in ethernet networks
  U* h6 k3 t- K- H1 S; j) \56.Describe the benefits of network segmentation with bridges
* h, f* W1 D' p: C, d57.Describe the benefits of network segmentation with routers
, ^  O! x) E' I3 d7 @58.Describe the benefits of network segmentation with switches
59.Describe the features and benefits of fast ethernet
60.Describe the guidelines and distance limitations of fast ethernet
61.Distinguish between cut-through and store-and-forward Lan switching
62.Describe the operation of the spanning tree protocol and its benefits
! U! \9 A$ u6 N' c  P63.Describe the benefits of virtual LANs
希望以上关于思科认证CCNA的一些建议对你有所帮助！