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33 Cards in this Set
- Front
- Back
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How long is the RHCSA exam?
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RHCSA exam is two hours (RHCE is either 2 or 3.5)
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What are two things you must make sure your system can do before the exam is over?
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All your changes must survive a reboot
SE Linux is required. You can turn it off, but it must be on when you finish |
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What are the minimum/maximum/recommended RAM requirements for RHEL 6 install?
32 bit Min/Max 64 bit Min / Max Overall recommendation or RAM? |
32 bit - 512MB/16GB
64 bitt - 512MB/2TB 1 GB is recommended minimum |
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What is the CPU type needed for RHEL6 with KVM?
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64 Bit with hardware virtualization
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Where are the man, doc, and info pages stored?
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\usr\share \man \doc \info
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What two commands can you run to identify the CPU architecture of a system?
(Each command gives different info about the CPU) |
uname -p (Will result with something like: x86_64)
cat /proc/cpuinfo (Will give you a bunch of stuff about the CPU) |
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Can RHEL6 /boot be installed on any drive?
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Only the first two physicals if using local disks (as opposed to SAN boot)
Because /boot can only reside here. |
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How do you check MD5 and sha256 checksums?
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md5sum nameofiso.iso
sha256sum nameofiso.iso |
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What is the default GUI for the Redhat Exam?
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GNOME
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Is it better to combine services on one server or spread them across multiple servers?
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Spreading them out reduces the security risk if one is compromised
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What are the rules on Disks/Partitions in RHEL 6:
How Many partitions will RHEL6 recognize per disk? How many Primary partitions can you have per disk? What if you need more partitions than 4? |
16
4 Make the 4th partition an Extended Partition and create logical partitions |
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How many logical partitions could you have on one disk if you were using your max
primary partitions? |
12 because you use three primarys, and one extended. That leaves
12 partitions before you reach the max per disk of 16 |
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What are the rules of swap sizing?
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Up to 2GB it's RAM x2
Above 2GB, it's RAM +2GB |
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Does the default installation of RHEL6 install the swap space as a partition or LVM?
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LVM
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What is the bare minimum number of volumes created in RHEL 6 and what are they?
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/
/boot swap |
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Describe the steps to build a logical volume (5 general steps)
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Label partition as a logical volume
Initiate the partition as a physical volume combine one or more physical volumes into a volume group Format as Linux FS or Swap Mount on a directory or as swap space |
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How can you mount an iso file stored on the local system as a DVD?
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mount -o loop rhel-server-6.0-x86_64-dvd.iso /media
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What is the format of the mount command?
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mount /device you're mounting /target folder you are mounting on
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If you select "Web Server" during install, what get's installed?
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Apache Web Server
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What is SELinux's mode set to by default after install of RHEL 6?
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Enforcing
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What command can you run to see what SELinux's enforcing mode is?
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sestatus
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On a KVM HOST, what needs to be set to get the KVMs
on the network through the firewall? How do I implement this change without a reboot |
Need to configure /etc/sysctl.conf to have the following:
net.ipv4.ip_forward=1 and then run sysctl -p to implement it immediately or reboot -this procedure turns on network bridging- |
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How can you find what drive devices are attached to your system?
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ls /dev
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Perform the following operation:
1. Mount the RHEL 6 CDROM to the media directory 2. Make a directory called disk in / 3. Copy the contents of the CDROM to the directory you just made 4. Why would you do the following above? |
1. mount /dev/cdrom /media
2. mkdir /disk 3. cp -ar /media/. /disk - or - cp -ar /media/. /disk/ (the end slash makes no difference) You would copy this to make a HTTP or FTP repository |
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When using the cp command to copy, how do you make sure you copy hidden files?
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Use a . At the end of the source: cp -ar /media/. /disk
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Say you've copied over the install files from the .iso into a directory in the default
WWW root area with a directory name of /inst/, where is this location? |
/var/www/html/inst
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Say you've copied over the install files from the .iso into a directory in the default
WWW root area with a directory name of /inst/, what command would you use to set the SELinux context? |
chcon -R --reference=/var/www/html/ /var/www/html/inst
(This command sets the context recursively) |
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How would you open the firewall control panel?
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system-config-firewall
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What command would you use to disable the firewall? (Until next reboot)
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iptables -F
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How do you see the status of the firewall rules?
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iptables -L
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What is the location for vsFTP files?
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/var/ftp/pub
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What security stuffs are enabled by default after an install?
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SELinux
iptables |
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What service is allowed through the default firewall in RHEL 6 after install?
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SSH
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