For the Comptia Network+ exam.
Networking tools to troubleshoot issues.
Like JavaScript anonymous undefined functions
With the yield statement
With the yield statement
def test
puts "You are in the method"
yield
puts "You are again back to the method"
yield
end
test {puts "You are in the block"}
def test
yield 5
puts "You are in the method test"
yield 100
end
test {|i| puts
7 - Application -> Application
6 - Presentation -> Application
5 - Session -> Application
4 - Transport -> Transport
3 - Network -> Network
2 - Data Link -> Network Interface
1 - Physical -> Network Interface
Mnemonic: All People Seem To Need Data Processing (OSI)
TCP/IP: Application - Transport - Network I
6 - Presentation -> Application
5 - Session -> Application
4 - Transport -> Transport
3 - Network -> Network
2 - Data Link -> Network Interface
1 - Physical -> Network Interface
Mnemonic: All People Seem To Need Data Processing (OSI)
TCP/IP: Application - Transport - Network I
Straight through is the most common type and is used to connect computers to hubs or switches. They are most likely what you will find when you go to your local computer store and buy a patch cable.
Crossover Ethernet cable is more commonly used to connect a computer to a computer and may be a littl
Crossover Ethernet cable is more commonly used to connect a computer to a computer and may be a littl
10Base-2
- 10Mbps over thin coaxial cable
- maximum length is 185 meters
10Base-T
- 10 Mbps
- category 3 unshielded twisted pair (UTP) wiring
- up to 100 meters long
100Base-T
- known as Fast Ethernet
- category 5, 5E, or 6 UTP wiring
- up to 100 meters long.
100Base-FX
- a version of Fast Ethernet that uses multi-mode opt
First octet value range from X to X. Example for class B: Public IP Range: 128.0.0.0 - 191.255.0.0.
- A 1-126
- B 128 - 191
- C 192 - 223
- D 224 - 239
- E 240 - 254
802.11b
- 11 MB/sec
- 2.4 GHz
- 11 overlapping channels which caused problems
802.11a
- 54 MB/sec
- 50 GHz
802.11g
- 54 MB/sec
- 2.4 GHz
802.11n
- 108-300 MB/sec - up to 600
- 2.4/5 GHz
- MIMO
802.11ac
- 1 GB/sec
- 2.4/5 GHz
- more channels, more speed
- MU-MIMO
- Identify Problem
- Establish Theory
- Test Theory
- Establish Plan
- Implement Solution
- Verify Functionality