COM object task

1. Create a reference to a COM object
2. Return a reference to a COM object

Referencing an object as COM
How?

Financial task

1. Calculate depreciation
2. Calculate future value
3. Calculate interest rate
4. Calculate internal rate of return
5. Calculate number of periods
6. Calculate payments
7. Calculate present value

Visual Basic How-To

1. How to read a file

Dim fileReader As String
fileReader = My.Computer.FileSystem.ReadAllText("C:\test.txt")
MsgBox(fileReader)

2.  

Subnetting visualization

/24 = hhhhhhhh
/25 = shhhhhhh
/26 = sshhhhhh
/27 = ssshhhhh
/28 = sssshhhh
/29 = ssssshhh
/30 = sssssshh
/31 = sssssssh
/32 = ssssssss

Rushing

Sometime people forget to fill information because they are rushing

Key concept: block size

Block size can be used as:
- last address (broadcast address)
- network address

What is that magic number (block size)?
The last span of subnetmask bit

Negara Equator

Benua Asia:
Negara:
Indonesia
Pulau:
- Sumatra
- Kalimantan
- Sulawesi
- Halmahera
- Waigeo (Papua Barat)

Benua Amerika
Negara:
- Equador
- Kolombia
- Brazil

Benua Afrika
Negara:
- Gabon
- Kongo
- Rwanda
- Kenya