Saturday, November 03, 2007

VLAN Port Assignments

VLAN Port Assignments

  • VLANs are assigned to individual switch ports.

  • Ports can be statically assigned to a single VLAN or dynamically assigned to a single VLAN.

  • All ports are assigned to VLAN 1 by default

  • Ports are active only if they are assigned to VLANs that exist on the switch.

  • Static port assignments are performed by the administrator and do not change unless modified by the administrator, whether the VLAN exists on the switch or not.

  • Dynamic VLANs are assigned to a port based on the MAC address of the device plugged into a port.

  • Dynamic VLAN configuration requires a VLAN Membership Policy Server (VMPS) client, server, and database to operate properly.

Sunday, September 16, 2007

CCENT Cisco Certified Entry Networking Technician

Cisco has recently introduced CCENT (Cisco Certified Entry-level Networking Technician) exam. The exam topic are provided below for reference:

Exam Number:
640-822 ICND1
Associated Certifications: CCENT and CCNA
Duration: 90 Minutes (50-60 questions)
Available Languages: English

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

Sunday, July 01, 2007

A+ Essentials 220-601 practice exams has launched practice tests for A+ 2006 Certification. A+ Essentials practice exam includes over 300 practice questions. The practice questions include multiple choice, true/false, and exhibit based questions. The practice tests can downloaded from the website.
The exam objectives for A+ Essentials are:
1.0 Personal Computer Components
2.0 Laptop and Portable Devices
3.0 Operating Systems
4.0 Printers and Scanners
5.0 Networks
6.0 Security
7.0 Safety and Environmental Issues
8.0 Communication and Professionalism
One need to pass A+ Essentials with any one of the following options:
220-602 A+ IT Technician
220-603 A+ Remote Support Technician
220-604 A+ Depot Technician
Among the options available, 220-604 A+ Depot Technician is considered to be covering minimum syllabus.
Wishes all the certification aspirants good luck!