Cisco認證網路工程師CCNA（Cisco Certified Network Associate）認證是由思科公司所頒發的，是台灣現時最專業的資格認證，是現時每位從事資訊科技或有志投身此行業的人士必要考取的專業證照之一。CCNA其考試科目640-802範圍及內容著重於現今流行的網路技術及Cisco 路由器／交換器 的設定。CCNA 640-802是國際證照考試，令人頭痛的就是考試是英文，看每一道題的時候不要單單去記住答案，而是要關注解題思路，要了解這道題目考察的是哪個知識點，為什麼選擇這個答案，這些要理解，題庫要理解性的記憶，這樣能事半功倍，不要機械性的記憶。在理解的基礎上很容易就記住了。

選擇相應的CCNA考試題庫準備考試只是一種方式，優點在于快速有效的幫助考生通過考試。缺點就是缺乏實踐，實踐是在平時的工作之余可以勤加練習。決定了參加CCNA綱路助理考試，通過考試，拿到屬于自己的CCNA證書是當務之急。

目前，考生報考CCNA認證最多的科目為640-802。選擇KillTest 640-802考古題準備考試只是一種方式，優點在于快速有效的幫助考生通過考試。缺點就是缺乏實踐，實踐是在平時的工作之余可以勤加練習。決定了參加CCNA綱路助理考試，通過考試，拿到屬于自己的CCNA證書是當務之急。

選擇相應的CCNA考試題庫準備考試只是一種方式，優點在于快速有效的幫助考生通過考試。缺點就是缺乏實踐，實踐是在平時的工作之余可以勤加練習。決定了參加CCNA綱路助理考試，通過考試，拿到屬于自己的CCNA證書是當務之急。

最新CCNA 640-802考試題庫如下：

考試編號：640-802
考試全稱：Cisco Certified Network Associate Exam
考題數目：434 題

免費下載CCNA 640-802部分考題下載

The following topics are general guidelines for the content likely to be included on the Interconnecting Cisco Networking Devices Part 1 exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.
Describe the operation of data networks.

* Describe the purpose and functions of various network devices
* Select the components required to meet a given network specification
* Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
* Describe common networking applications including web applications
* Describe the purpose and basic operation of the protocols in the OSI and TCP models
* Describe the impact of applications (Voice Over IP and Video Over IP) on a network
* Interpret network diagrams
* Determine the path between two hosts across a network
* Describe the components required for network and Internet communications
* Identify and correct common network problems at layers 1, 2, 3 and 7 using a layered model approach
* Differentiate between LAN/WAN operation and features

Implement a small switched network

* Select the appropriate media, cables, ports, and connectors to connect switches to other network devices and hosts
* Explain the technology and media access control method for Ethernet technologies
* Explain network segmentation and basic traffic management concepts
* Explain the operation of Cisco switches and basic switching concepts
* Perform, save and verify initial switch configuration tasks including remote access management
* Verify network status and switch operation using basic utilities (including: ping, traceroute,telnet,SSH,arp, ipconfig), SHOW & DEBUG commands
* Implement and verify basic security for a switch (port security, deactivate ports)
* Identify, prescribe, and resolve common switched network media issues, configuration issues, autonegotiation, and switch hardware failures

Implement an IP addressing scheme and IP services to meet network requirements for a small branch office

*
* Describe the need and role of addressing in a network
* ” Create and apply an addressing scheme to a network Assign and verify valid IP addresses to hosts, servers, and networking devices in a LAN environment
* Explain the basic uses and operation of NAT in a small network connecting to one ISP
* Describe and verify DNS operation
* Describe the operation and benefits of using private and public IP addressing
* Enable NAT for a small network with a single ISP and connection using SDM and verify operation using CLI and ping
* Configure, verify and troubleshoot DHCP and DNS operation on a router.(including: CLI/SDM)
* Implement static and dynamic addressing services for hosts in a LAN environment
* Identify and correct IP addressing issues

Implement a small routed network

* Describe basic routing concepts (including: packet forwarding, router lookup process)
* Describe the operation of Cisco routers (including: router bootup process, POST, router components)
* Select the appropriate media, cables, ports, and connectors to connect routers to other network devices and hosts
* Configure, verify, and troubleshoot RIPv2
* Access and utilize the router CLI to set basic parameters
* Connect, configure, and verify operation status of a device interface
* Verify device configuration and network connectivity using ping, traceroute, telnet, SSH or other utilities
* Perform and verify routing configuration tasks for a static or default route given specific routing requirements
* Manage IOS configuration files (including: save, edit, upgrade, restore)
* Manage Cisco IOS
* Implement password and physical security
* Verify network status and router operation using basic utilities (including: ping, traceroute,telnet,SSH,arp, ipconfig), SHOW & DEBUG commands

Explain and select the appropriate administrative tasks required for a WLAN

* Describe standards associated with wireless media (including: IEEE WI-FI Alliance, ITU/FCC)
* Identify and describe the purpose of the components in a small wireless network. (including: SSID, BSS, ESS)
* Identify the basic parameters to configure on a wireless network to ensure that devices connect to the correct access point
* Compare and contrast wireless security features and capabilities of WPA security (including: open, WEP, WPA-1/2)
* Identify common issues with implementing wireless networks

Identify security threats to a network and describe general methods to mitigate those threats

* Explain today’s increasing network security threats and the need to implement a comprehensive security policy to mitigate the threats
* Explain general methods to mitigate common security threats to network devices, hosts, and applications
* Describe the functions of common security appliances and applications
* Describe security recommended practices including initial steps to secure network devices

Implement and verify WAN links

* Describe different methods for connecting to a WAN
* Configure and verify a basic WAN serial connection

Recommended Training

The following course is the recommended training for this exam.

* Interconnecting Cisco Networking Devices Part 1 (ICND1) v1.0