READ Free Dumps For LPI- 117-201
| Question ID 21502 | What needs to be done to enable 32 bit I/O transfer mode for (E)IDE disks, on a system running a 2.4 series
Linux kernel?
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| Option A | The Linux kernel must be recompiled.
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| Option B | The sysctl utility must be used.
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| Option C | The hdparm utility must be used.
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| Option D | This feature isn't supported in 2.4 series kernels.
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| Option E | This feature is enabled by default in 2.4 series kernels
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| Correct Answer | C |
Explanation Explanation: hdparm provides a command line interface to various hard disk ioctls supported by the stock Linux ATA/IDE device driver subsystem. Some options may work correctly only with the latest kernels. -c Query/enable (E)IDE 32-bit I/O support. A numeric parameter can be used to enable/disable 32- bit I/O support: Currently supported values include 0 to disable 32-bit I/O support, 1 to enable 32- bit data transfers, and 3 to enable 32-bit data transfers with a special sync sequence required by many chipsets. The value 3 works with nearly all 32-bit IDE chipsets, but incurs slightly more overhead. Note that "32-bit" refers to data transfers across a PCI or VLB bus to the interface card only; all (E)IDE drives still have only a 16-bit connection over the ribbon cable from the interface card.
| Question ID 21503 | DNSSEC is used for?
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| Option A | Encrypted DNS queries between nameservers.
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| Option B | Cryptographic authentication of DNS zones.
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| Option C | Secondary DNS queries for local zones.
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| Option D | Defining a secure DNS section.
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| Option E | Querying a secure DNS section.
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| Correct Answer | B |
Explanation Explanation: See http://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions DNSSEC was designed to protect Internet resolvers (clients) from forged DNS data, such as that created by DNS cache poisoning. All answers in DNSSEC are digitally signed. By checking the digital signature, a DNS resolver is able to check if the information is identical (correct and complete) to the information on the authoritative DNS server.