QUESTION: 157

A technician learns users are unable to tog in to a Linux server with known-working LDAP credentials. The technician logs in to the server with a local account and confirms the system is functional can communicate over the network, and is configured correctly However, the server log has entries regarding Kerberos errors.
Which of the following is the MOST likely source of the issue?

A local firewall is blocking authentication requests.
The users have expired passwords
The system clock is off by more than five minutes
The server has no access to the LDAP host

Answer(s): C

Explanation:

Kerberos is a network authentication protocol that uses tickets to allow clients and servers to prove their identity to each other. Kerberos relies on accurate time synchronization between the parties involved, as the tickets have expiration dates and timestamps. If the system clock of a Linux server is off by more than five minutes from the LDAP server or the domain controller, the Kerberos authentication will fail and generate errors. A local firewall is unlikely to block authentication requests if the server can communicate over the network and is configured correctly. The users' passwords are not relevant if they are known-working LDAP credentials. The server has access to the LDAP host if it can communicate over the network and is configured correctly.

Reference:

https://access.redhat.com/documentation/en-
us/red_hat_enterprise_linux/6/html/identity_management_guide/kerberos_errors https://www.ibm.com/docs/en/aix/7.2?topic=authentication-kerberos-time-synchronization

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QUESTION: 158

Which of the following BEST describes a warm site?

The site has all infrastructure and live data.
The site has all infrastructure and some data
The site has partially redundant infrastructure and no network connectivity
The site has partial infrastructure and some data.

Answer(s): D

Explanation:

A warm site is a type of disaster recovery site that has some pre-installed hardware, software, and network connections, but not as much as a hot site. A warm site also has some backup data, but not as current as a hot site. A warm site requires some time and effort to become fully operational in the event of a disaster. A hot site is a disaster recovery site that has all infrastructure and live data, and can take over the primary site's operations immediately. A cold site is a disaster recovery site that has no infrastructure or data, and requires significant time and resources to set up.

Reference:

https://www.enterprisestorageforum.com/management/disaster-recovery-site/ https://www.techopedia.com/definition/3780/warm-site

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QUESTION: 159

An administrator is configuring a new server for use as a database server. It will have two mirrored drives to hold the operating system, and there will be three drive bays remaining for storage Which of the following RAID levels will yield the BEST combination of available space and redundancy?

RAID
RAID 1
RAIDS
RAID 10

Answer(s): D

Explanation:

RAID 10 is the RAID level that will yield the best combination of available space and redundancy when configuring a new server for use as a database server with two mirrored drives for the operating system and three drive bays remaining for storage. RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk mirroring and disk striping to protect data. It requires a minimum of four disks and stripes data across mirrored pairs. As long as one disk in each mirrored pair is functional, data can be retrieved. RAID 10 provides high performance, fault tolerance, and fast recovery, but it reduces storage capacity by half. RAID 0 is a RAID configuration that splits data across two or more drives without parity or redundancy. It improves performance but offers no fault tolerance. If one drive fails in RAID 0, all data is lost and the system cannot boot. RAID 1 is a RAID configuration that duplicates data across two or more drives. It provides fault tolerance and improves read performance, but reduces storage capacity by half. If one drive fails in RAID 1, the other drive can continue to operate without data loss or system downtime. RAID 5 is a RAID configuration that stripes data across three or more drives with parity information. It provides fault tolerance and improves performance, but reduces storage capacity by one drive's worth of space. RAID 5 can tolerate one drive failure without data loss, but not two or more.

Reference:

https://www.howtogeek.com/199068/how-to-upgrade-your-existing-hard-drive-in-under-an-hour/ https://www.howtogeek.com/202794/what-is-the-difference-between-127.0.0.1-and-0.0.0.0/

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QUESTION: 160

The management team at a healthcare organization is concerned about being able to access the dairy vital records if there is an IT disaster that causes both servers and the network lo be offline.
Which of the following backup types can the organization use to mitigate this risk?

Tape
Cloud
Disk
Print

Answer(s): D

Explanation:

A print backup is a type of backup that can be used to mitigate the risk of being unable to access the daily vital records if there is an IT disaster that causes both servers and the network to be offline. A print backup is a backup that involves printing out the data on paper and storing it in a secure location. A print backup can provide offline access to the data without relying on any hardware or software components that may be affected by the disaster. However, a print backup has some drawbacks such as high cost, low efficiency, low security, and environmental impact. A tape backup is a type of backup that involves storing the data on magnetic tape cartridges that can be accessed using a tape drive or a tape library. A tape backup can provide offline access to the data with high capacity, low cost, and long durability, but it requires special equipment and software that may not be available during a disaster. A cloud backup is a type of backup that involves storing the data on remote servers or platforms that can be accessed over the internet using a web browser or an application. A cloud backup can provide online access to the data with high scalability, flexibility, and security, but it requires network connectivity and bandwidth that may not be available during a disaster. A disk backup is a type of backup that involves storing the data on hard disk drives or solid state drives that can be accessed using a computer or a device. A disk backup can provide online or offline access to the data with high performance, reliability, and portability, but it requires compatible hardware and software that may not be available during a disaster.

Reference:

https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it-matter/ https://www.howtogeek.com/443611/how-to-encrypt-your-macs-system-drive-removable-devices- and-individual-files/ https://www.howtogeek.com/199068/how-to-upgrade-your-existing-hard- drive-in-under-an-hour/ https://www.howtogeek.com/202794/what-is-the-difference-between-127

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QUESTION: 157

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QUESTION: 160

Explanation:

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