Exam Essentials

Know what the /proc directory contains and what manages it. The /proc directory contains decimal numbers corresponding to process IDs of running processes. The Process File System (PROCFS) manages the /proc directory.

Understand what CacheFS is used for. The Cache File System is used to improve the performance of slow network connections or slow data devices (such as CD-ROMs) by caching files that users have used. Subsequent accesses of these files will be quicker because the files are cached on the local hard disk.

Know the difference between a front file system and a back file system. In CacheFS, the front file system is located on the local machine and contains copies of cached files. The back file system is located on the remote machine (or is the CD-ROM) and contains the original files.

Understand what virtual memory is used for. Virtual memory is hard disk space used to emulate physical memory, and virtual memory increases the amount of memory available to Solaris. Even though hard disk access is slower than memory access, virtual memory is good for computers because it reduces cost. It's much less expensive to purchase 2GB worth of disk space to use as virtual memory than to purchase 2GB of RAM.

Know how to create an additional swap file. First, you must create a file of the desired size with the mkfile command. Then, you use the swap -a command to make the new file a swap file.

Know the difference between a core file and a crash dump. A core file is generated when an application experiences a critical failure. Crash dumps are generated when Solaris experiences a critical failure.

Know which two files make up the crash dump. The two files are unix.X and vmcore.X. The X in each file will be the crash dump sequence number.

Know the difference between coreadm and dumpadm. The coreadm command is used to manage core files, and the dumpadm command is used to manage crash dump files.

Know the name and location of the two files that are used to configure NFS logging. The two files used are /etc/default/nfslogd and /etc/nfs/nfslog.conf. The nfslog.conf file contains tags and specifics regarding individual logging options, whereas nfslogd contains information that can be used to manage logging computer-wide.

Know which two daemons must be running on an NFS server for NFS services to function. The two critical server-side daemons are nfsd and mountd.

Know what the /etc/dfs/dfstab file is used for. The /etc/dfs/dfstab file is used to automatically mount shared file systems for use in NFS. The dfstab file contains one or more share commands used to share file systems.

Know how to stop and start NFS services. The NFS server is stopped with the /etc/init.d/ nfs.server stop command and restarted with the /etc/init.d/nfs.server start command.

Know how to access shared NFS resources from clients. Clients wanting to access NFS resources must mount the volume locally by using the mount command, or by another mounting method, such as AutoFS.

Know which daemon manages AutoFS. AutoFS is managed by the automountd daemon.

Know the three types of maps used by the automounter. The maps are master, direct, and indirect.




Solaris 9. Sun Certified System Administrator Study Guide
Solaris 9 Sun Certified System Administrator Study Guide
ISBN: 0782141811
EAN: 2147483647
Year: 2003
Pages: 194

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