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DOMAIN 3.0 NETWORKING

This domain requires that the candidate have the knowledge and skills to understand and be able to describe the core components of the Internet infrastructure; identify problems with Internet connectivity; understand how to use Internet domain names and DNS; understand the capabilities of popular remote access protocols; understand how various protocols or services apply to the function of their corresponding server; identify when to use various diagnostic tools for resolving Internet problems; create a logic diagram of Internet components; describe various hardware and software connection devices; understand when to use various site monitoring procedures; understand how common networking topologies are used; and understand the capabilities of application server providers.

[edit section] 3.1. Understand and be able to describe the core components of the Internet infrastructure.

Content may include the following:

• Network access points
• Backbone
• Hardware/software infrastructure knowledge
• Internetworking devices such as routers, switches and bridges

[edit section] 3.2. Identify problems with Internet connectivity from source to destination for various types of servers.

Content may include the following:

• E-mail server
• Web server
• FTP server
• News server
• Proxy server
• Caching server
• Media server
• DNS server
• Certificate server
• Directory (LDAP) server
• Connecting through a firewall

[edit section] 3.3. Understand and be able to describe the use of Internet domain names and DNS.

Content may include the following:

• DNS entry types
• Hierarchical structure
• Role of root domain servers
• Top level or original domains
• NSlookup

[edit section] 3.4. Understand and be able to describe the capabilities of popular remote access protocols.

Content may include the following:

• SLIP
• PPP
• PPTP
• L2TP
• PPPOE
• Point-to-point multi-point

[edit section] 3.5. Understand how various protocols or services apply to the function of their corresponding server, such as a mail server, a web server or a file transfer server.

Content may include the following:

• POP3
• SMTP
• HTTP
• FTP
• NNTP
• LDAP
• Telnet

[edit section] 3.6. Identify when to use various diagnostic tools for resolving Internet problems.

Content may include the following:

• Ping
• WinIPcfg
• IPconfig
• ifconfig
• ARP
• TraceRT
• Network Analyzer

[edit section] 3.7. Create a logic diagram of Internet components from the client to the server.

Content may include the following:

• Bridge
• Brouter
• Router
• Switch
• Hub
• Repeater
• Network Adapter
• Cable Modem
• xDSL Modem
• Modem
• WAN Link
• CSU/DSU
• FireWall
• Network Address Translation (NAT) server
• Proxy Server

[edit section] 3.8. Describe various hardware and software connection devices and when to use them.

Content may include the following:

• Network adapter
• Bridge
• Brouter
• Router
• Switch
• Repeater
• Hub
• Cable Modem
• xDSL Modem
• Modem
• CSU/DSU
• FireWall
• Network Address Translation (NAT) server
• Proxy Server

[edit section] 3.9. Understand when to use various site monitoring procedures.

Content may include the following:

• Viewing server log files
• Monitoring network traffic
• Monitoring server utilization
• Monitoring server network bandwidth utilization

[edit section] 3.10. Understand and be able to describe how common networking topologies are used.

Content may include the following:

• Star
• Bus
• Mesh
• Ring

[edit section] 3.11. Understand and be able to describe the capabilities of application server providers.

Content may include the following:

• Providing Internet based services on an as needed basis, such as:
  • Custom Web Hosting
  • Providing e-mail services
  • Providing Fax services
  • Providing access to an application over the web
  • Providing shared access to expensive hardware, such as a mainframe computer

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