Computer networks

 The main high-bandwidth connectivity methods used by medium and large enterprises:

• T1

• PointToPoint

• bus

• DSL

• cable modem

The main high-bandwidth connectivity methods used by medium and large enterprises

• T3

• PointToPoint

• bus

• DSL

• cable modem

Using the ping command, you can determine:

•  number of routers between source and destination devices

• default gateway address

• the average time it takes for a packet to reach its destination and for the response to return to its origin

• IP address of the router closest to the end device

• the average time each router takes to respond between source and destination devices

 Command Line Utilities for Diagnosing Problems at Layer 3

• CLI

• ping

• DNS

• packet sniffer

• Telnet

 Command Line Utilities for Diagnosing Problems at Layer 3

•  packet sniffer

• DHCP

• DNS

• ipconfig

• Telnet

Command Line Utilities for Diagnosing Problems at Layer 3

• Telnet

• packet sniffer

• GUI

• TeraTerm

• ping

 Physical layer functions of the OSI model

• signal generation

• data sharing

• adding a hardware address

• data encapsulation in frames

• packet routing

Physical layer functions of the OSI model

•  data encapsulation in frames

• signal generation

•  data sharing

• adding a hardware address

•  packet routing

What is included in a logical topology map?

• location of the wiring closet and access point

• wireless signal coverage area

• network data path

• physical location of intermediate devices

•  location of cable lines

What is included in a logical topology map?

•  location of the wiring closet and access point

• wireless signal coverage area

•  location of cable lines

• device names and Layer 3 addressing information

• physical location of intermediate devices