Skip to main content

How to configure Network file system version 4 (NFSv4) client?

69.How to configure Network file system version 4 (NFSv4) client?
Ans.
1. There are two new options listed in NFSv4 are introduced as: clientaddr and ports

2. The version 3 of NFS introduced NFS over TCP, which improved NFS’s reliability.

3. In NFSv3, users use the mount option i.e., tcp as client whether client wants to use TCP or UDP to communicate with the server.
NFSv4 replaces tcp or udp with a single option i.e. ports=tcp or udp

4. The default buffer size for NFSv4 is 8192 bytes, but it can grow to as large and by 32,678 bytes, which results performance improvements.

5. Following are the mount options:
clientaddr=n – Declares client to be multihomed
proto=type – Declares port as either udp or tcp
resize=n – declares read size of clients buffer
wsize=n – Declares write size of clients buffer
sec=mod – Declares security model as either krb, krb5 etc.

Comments

Popular posts from this blog

Explain the tools used to monitor system security.

12.Explain the tools used to monitor system security. Ans. 1. People who, for purpose of larceny or to amuse themselves, like to break into computers, they are called ‘crackers’. 2. If there is a vulnerability in a system they will find it and use it against you. 3. Preventing use of your machine for nefarious purpose and guarding against intrusion are, in the end, your responsibility alone. 4. Red hat equips you with tools to detect and deal with unauthorised access of many kinds. 5. You need to configure those tools and understand how to sense the warning they provide. 6. Fortunately Linux is development community is quick to find potential exploits and to create ways of slamming the doors before crackers can enter in your system. 7. Red hat is careful enough to making available new, patched version in which potential exploits have been found. 8. You should make sure to download and install the repaired package. 9. This line of defence...

Explain the file systems supported by Linux.

21.Explain the file systems supported by Linux. Ans. 1. Linux can read/write to several file system that originated with other operating system much different from Linux. 2. One reason that Linux supports so many file systems is the design of its virtual file system (VFS) layer, its provides a fairly universal forms of file support, file systems supported by Linux are as follows: 3. ext3: • Ext3 stands for third extended file system. • Starting from Linux Kernel 2.4.15 ext3 was available. • The main benefit of ext3 is that it allows journaling. • Journaling has a dedicated area in the file system, where all the changes are tracked. • When the system crashes, the possibility of file system corruption is less because of journaling. (If no journaling, then fsck command (file system consistency check) is used to check for the corrupted file and to repair that file). • ext3 keeps a record of uncommitted file transactions and applies only those transactions when the sy...

Explain the boot process in Linux.

13.Explain the boot process in Linux. Ans. 1. When we turn on our PC, it runs a program called “Basic input/output System” (BIOS). 2. BIOS is the only way to communicate with the system components until the operating system is up and running and able to take over the system management functions. 3. BIOS is installed on Read only memory (ROM) chip physically attached to system board. 4. The ROM type of chip is usually referred as to as an EEPROM chip, meaning it’s not writeable by user. 5. After the BIOS loads, it performs some diagnostics on the hardware, checks the installed components to be sure they are functioning and checks the system RAM (Random access memory). 6. Next the BIOS tries to find system drives from which it can load the boot program to begin the process of starting the operating system/kernel. 7. We can specify the search order for drives by changing the setting in the system BIOS configuration. 8. Usually the first hard drive...