Ch. 4.2 Flashcards
What 2 pieces of information does an IP address provide?
Network ID and Host ID
How many bits are in IPv4 Addressing?
32 bits
What is a subnet mask used for?
Showing Network ID vs Host ID
What is this binary octet the decimal equivalent of?
11100000
224
What is this binary octet the decimal equivalent of?
11111000
248
What is a destination gateway?
Acts as an exit point for data packets off the “data highway”
What does a router do if a data packet is meant for a different IP network or subnet?
Sends the data packet to the default gateway
What happens if a router finds no suitable path for a data packet?
Drops it. Tells host it cannot be delivered
What does the dynamic routing protocol do?
Allows routers to share information of known networks and possible paths to them
What convention do we set a default gateway’s interface ID to?
First or last usable host address
What is a characteristic of a broadcast address?
All available spots are set to “1”
What are 4 things a host adapter typically has to be set up.
IP Address
Subnet Mask
IP Address of Default Gateway
Addresses in a DNS server
What was the previous name of Ethernet?
LAN
Local Area Network
What does command “netsh” allow you to do?
Configure IP configurations of adapter interfaces
What does this command do?
netsh interface ip set address Ethernet dhcp
Set network adapter named “Ethernet” to enable DHCP
What does this command do?
netsh interface ip set address “Ethernet” static 198.51.16.17 255.255.255.252 198.51.100.30
Sets host adapter named “Ethernet” with IP address 198.51.16.17/28
The “ 255.255.255.252” part sets the subnet mask
The “198.51.100.30” part sets what the default gateway will be for host adapter named “Ethernet”
What does this command do?
netsh interface ip show config
Reports IP Configuration
What is used more than netsh now?
Powershell
What does this command do?
Get-NetAdapter
Get-NetIPAddress
Query existing configuration
What does this command do?
New-NetIPAddress
Sets NEW configuration
What does this command do?
Set-NetIPAddress
Sets EXISTING configuration
What does YAML mean?
Yet another markup language
In Linux, how are Ethernet interfaces identified?
eth0, 1, 2
en0, 1, 2
What is the difference between running and persistent configuration?
Persistent config is configuration that’s applied after reboot
Running is what’s being used right now
How was persistent configuration applied long ago in Linux?
Editing the “/etc/network/interfaces” file with “ifup” and “ifdown” scripts
What do Linux distributions use to apply IP configurations now?
How are they used?
NetworkManager package
Used by GUI or nmcli tools
What does newer Ubuntu use to configure IP?
netplan to written in YAML
