OSI-Network Infrastructure & PMBOK

Network Topology

Bus Topology

Star Topology

Ring Topology

Used in undersea cable (connect country together)

All device in the bus topology can hear (detect) each other

All devices connect wire to a central connector (switch)

Fully Meshed Topology (Best)

Down side

Expensive to maintain

Safest and greatest redundancy

Difficult to administer

Addressing

Physical Address

Logical Address

Operates at Layer 2

"Burned In" device when manufactured

Cannot divide into separate sub-network

MAC Address

Configured by Network Administrator

Operates at Layer 3

Group devices into sub-network

IP Address

⚠ Arp (Address Resolution Protocol) enables two layers to resolve each other

IP Address

32 bits

Break it down to 4 octets

Represent each octets as decimal number

IP is hierarchical

Subnet

Sub-netting enables the hierarchy

Use Subnet Mask to configure device

Subnet mask is all 1 on the left and 0 on the right

Subnet Mask used to determine the Network, Sub-Network and Host Portion of the IP

Logical address rules

Address in same network connect to same LAN

Communication outside network must sent through router

PMBok

Integration Management

Scope Managment

Time Management

Cost Management

Quality Management

Human Resource Management

Communication Management

Risk Management

Procurement Management