Basic Networking
What are the 3 needed IP components to establish communication on a network?
IP Address
Subnet Mask
Gateway
What is the command used to elevate privileges at execution time... may require a password?
sudo
When creating PKI keys, what 2 keys are created?
public and private
Logged in user's home directory
Numeric equivalent to rwxr-xr--
754
A subnet mask, when applied to an IP address, defines what?
The network address.
What command is used to set the SUID for the owner of a file?
What client or program is used to create PKI keys?
ssh_keygen
Which command is used to redirect output so it can be read through and scrolled up and down?
less
Command used to remove a user.
userdel
A class 'B' network has how many IP addresses to assign?
64K
What command is used to edit the sudoers file?
visudo
SSH _________ can be used to encapsulate and secure traffic between a client and insecure server.
Tunneling
Which command displays the last 10 lines of a file and keeps the process open to view lines as they are added to the file?
tail -f
Command used to remove all files and subdirectories.
rm -r
What protocol does PING use?
ICMP
What command is used to assess network security on an entire subnet - 192.168.10.0/255.255.255.0?
nmap -sP 192.168.10.0/24
By default, where on the client does the secure fingerprint get stored when accessing an SSH server?
~/.ssh
What command displays a text file in reverse order?
tac
The value of 1TB is ____MB
1 million or 1,048,576
What command queries DNS with to resolve a hostname to IP Address or IP Address to hostname?
host
Which command will show all files in use by the user "localuser?"
lsof | grep localuser
What command is used to copy the created public key to a user's authorized_keys directory?
ssh-copy-id user@domain
Which command display's the type of contents for a file?
file
What is the popular OS distribution for a Raspberry Pi?
Raspbian