Lec 02 - Network Addressing & Project Management

Question 1

What determine whether two devices are in the same subnet?

Answer 1

Whether each device using its OWN subnet mask can see other device with its subnet mask

Question 2

What are 3 ranges for private IP addresses?

Answer 2

+ 10.0.0.0 - 10.255.255.255
+ 172.16.0.0 - 172.31.255.255
+ 192.168.0.0 - 192.168.255.255

Question 3

What are 2 types of addressing?

Answer 3

Physical address (Layer 2) (e.g MAC address) & Logical address (Layer 3) (e.g IP address)

Question 4

Advantages & Disadvantages of fully meshed topology?

Answer 4

Advantages:
+ The safest and greatest redundancy
Disadvantages:
+ Very expensive to maintain
+ Very difficult to troubleshoot/administer

Question 5

What is a fully meshed topology?

Answer 5

Every node (computer) is connected directly to other nodes.

Question 6

What is a ring topology?

Answer 6

a type of network topology in which each device is connected to two other devices on either side via a network cable.

Question 7

Advantages & Disadvantages of star topology

Answer 7

Advantages:
+ A computer/cable can fail without causing disruption for others
+ High-performance - No data collision
+ Easy troubleshooting
Disadvantage:
+ The hub fails = the entire network fails
+ More expensive (than bus topology)
+ Require more cables (than bus topology)

Question 8

Advantages & Disadvantages of bus topology

Answer 8

Advantages:
+ Scalable
+ Easy & cheap to install
+ One node (PC) can fail without interrupting others
Disadvantages:
+ Every device in the network can “listen” to the data
+ If the cable fails => entire network fails
+ Performance degrades with more nodes
+ Difficult to maintain, admin, and troubleshoot
+ High data collision

Question 9

What is a star topology?

Answer 9

A network topology in which each network component is physically connected to a central node such as a router, hub or switch

Question 10

Some examples of bus topology (with its media)

Answer 10

e.g Wifi (media: Air)

Question 11

What is bus topology (a.k.a line topology)?

Answer 11

A type of network topology in which all devices are connected to a media - a network cable. This media, where all data transfer between devices, is referred as bus, backbone, or trunk.

Question 12

What are 2 parts in an IP address?

Answer 12

Network ID & Host ID

Question 13

What is subnetting?

Answer 13

A logical division of IP address into 2 parts: Network address and Host address

Question 14

What are 2 reserved addresses for host address?

Answer 14

Network address (xxx.xxx.0.0)
Broadcast address (xxx.xxx.255.255)

Question 15

What is a subnet mask?

Answer 15

The number of bits used for identifying network address

Question 16

What is the name given to the layer 3 datagram?

Answer 16

Packet

Question 17

Which protocol resolves layer 2 addresses with layer 3 addresses?

Answer 17

Address Resolution Protocol (arp)

Question 18

Which device is found in the same OSI layer as frames? (layer 2)

Answer 18

Bridge

Question 19

How does the receiving device know how large the Frame is?

Answer 19

The type/length indicates the size of the frame

Question 20

What does Project Integreation Management involve?

Answer 20

It involves coordinating the other 8 PMBOK areas throughout the project’s lifetime. It especially involves identifiying and communicating with the project’s key stakeholders.

Question 21

What does TELOS stands for?

Answer 21

Technical, Economic, Legal, Organizational, Scheduling

Question 22

Sequences in Time Management

Answer 22

Break down project into component activities -> Sequence the activities -> Estimate resource -> Estimate duration -> Develop a schedule -> Control the schedule

Question 23

What are steps taken for cost management

Answer 23

Estimate the costs
Determine a budget
Control the costs