Domain 4 Flashcards
uname -a
Basic information about the kernel and CPU
lscpu
Returns technical information about cache sizes and CPU supports
20 lines
cat /proc/cpuinfo
Returns more information compared to LSCPU
lscpi
Information about hardware interfaces like audio devices and ethernet controllers
4 disk interfaces
PATA, Sata, nvme scsi
PATA
Old interface featuring 40 or 80 pin cables
Sata
Newer version of PATA smaller cables smaller connector
Nvme
Nonvolatile memory express designed specifically for SSD drives
Three parts of any Linux operating system
- the kernel
- the Shell
- the programs
Debian Linux distributions
Ubuntu,mint,Kali Linux
Red hat Linux distributions
Red hat, fedora, CentOS
Linux distribution release cycles Ubuntu
- Release is published twice yearly in April and October
- long-term support releases every two years
3.LTS is supported for five years
Linux distro’s with rolling release model
Kali Linux, openSuse, tumbleweed?
File descriptors 0, 1, 2
- Stdin
- Stdout
- Stderr
Three types of DNS queries
Recursive, iterative, non-recursive
DNS record types
A record, AAAA record, CNAME record, MX record, NS record, TXT record, CERT record
A Record
Host record, stores host name and IPV4address
CNAME Record
Used to alias a host name to another host name
NS Record
Specifies a DNS zone such as example.com is delegated to a specific authoritative name server
CERT record
Stores encryption certificates such as PKIX, SPKI, PGP
MX Record
Specifies SMTP email server for the domain
Where is DNS configured on Linux
/etc/bind
Low level management tools used for Debian and red hat
Debian: dpkg - apt, apt-get
RH: rpm - yum, dnf
SuSe distri
Is a slack based distro but shares some elements of red hat e.g. rpm package format for zypper manager
