UNIX Skills
Shows file listing in a directory
What is the "ls" command
Name one layer of the OSI model
Application, Presentation, Session, Transport, Network, Link, Physical
Name one regular expression
. * " \ ^
What does C I A stand for?
Confidentiality, Integrity, Availability
If you had 9600 baud, you used what?
A modem
grep -v "Matt"
Shows all results EXCEPT "Matt"
This layer makes sure packets get to their destination.
Network layer
What does * match in UNIX?
Zero or more characters
You have a public key and a private key for your Linux server to run SSH. What do you do with the public key?
Safeguard it carefully.
This was popular for early personal home computers and for use in boomboxes during the early 1980s
A cassette tape
#!/bin/bash
The first line of a shell script that tells the shell to run using bash
Twisted pair would live at this layer
Layer 1, Physical layer
The caret ^ matches what?
The start of the line
Name one encryption protocol used for a site to site IP-SEC VPN?
Shared key, AES-256
Which of these were NOT personal computers in the 1980s? TRS-80, Commodore PET, Apple II, Vector, Osborne, IBM
They were all PCs in the 1980s
Name one way to make a loop in a shell script
While true do , for 1 2 3 4 in ..
This device translates all seven layers of the OSI stack.
What is a gateway
If you want to "escape" a character, use this character first.
What is a "\" or backslash
What is one system log you would evaluate in Linux or UNIX to detect system access and system issues?
syslog
Which of these is NOT computer storage? Tape, RAM memory, ROM memory, hard disk drive, drum memory, paper, iron ferrites
They are all computer storage.
What does the | symbol do?
It connects standard output from one command to standard input of another command
Name four network routing protocols
RIP, OSPF, BGP, IS-IS
What would [A-Z][a-z] match?
One uppercase letter followed by one lower case letter
You notice a system is listening on port tcp 21. You find out it is an FTP server. What are some security risks?
Open access. Clear text protocol, password transmitted in clear text
Aho, Weinberg, and Kernigan-- the authors/inventors of AWK programming utlity