D-ISM-FN-01 Exam Dumps - EMC DCA-ISM Questions and Answers

Astub fileis a small placeholder file that remains on primary storage after data has been archived or moved to secondary storage.

Itcontains a pointer or addressof the archived data’s location.

When accessed, the data is transparently retrieved from the archive.

Address of the source fileand other options do not accurately describe a stub file’s purpose.

Afull backupcapturesall dataeach time it runs.

Main advantage:Fastest recovery because no additional backup sets (like incrementals or differentials) need to be combined.

Disadvantage:Takes more backup time and requires more storage space compared to incremental backups.

Option B:Full backups have a higher impact because of the time and bandwidth required.

Option C:Full backups consume the most storage.

Option D:Full backups are not the fastest in terms of backup window – they are the fastest in recovery.

Signature-based detectionis the most common method of malware detection. It works by comparing files and data to a database of known malware signatures:

Fast and efficient for known threats.

Updated regularly by security vendors.

Reputation-based:Looks at the trustworthiness of files/domains.

Behavioral:Monitors actions and identifies suspicious patterns.

Heuristic:Detects new malware based on file behaviors and patterns, useful for unknown threats.

Remote data protection and recovery solutions, like replication and cloud-based backup, are primarily designed to ensuremaximum application and information availability. They protect data in the event of:

Local failures(disk, server, or site outages)

Natural disasters(floods, fires)

Ransomware attacks

By having off-site copies and failover options, businesses maintain continuous access to critical data.

Thefifth stageof penetration testing is known aspost-exploitationoranalysis of the compromised environment. It involves:

Checking the compromised system/networkto determine the scope of access.

Identifying potential for further exploitation.

Gathering information about the environment.

Option Arelates to the risk assessment phase.

Option Bis typically done in post-exploitation but isn’t the main step.

Option D(collecting evidence) is more related to reporting/documentation at the end.

OSD gateways provide access to object storage systems through APIs. The most common interfaces are:

REST (Representational State Transfer): A stateless protocol using standard HTTP methods, widely used for web services.

SOAP (Simple Object Access Protocol): A protocol for exchanging structured information in web services, using XML.

These APIs allow applications to interact with object storage systems over HTTP/HTTPS protocols.

SSH and SMB: SSH is for secure shell access; SMB is for file sharing, not typically used for object storage.

HTTP and HTTPS: These are transport protocols; while used by REST and SOAP, they are not interfaces themselves.

NFS and CIFS: File-based interfaces, not used for object storage.

Native NVMeis a protocol designed for direct-attached storage (DAS) environments. It allows a host to communicate with NVM storage devices (like NVMe SSDs) within the same server.

Limitation:Native NVMedoes notsupport external NVMe storage connectivity beyond the server.

To connect to external shared NVMe storage, protocols likeNVMe over Fabrics (NVMe-oF)are used.

RAID 5provides acost-effective balancebetween:

Data protection(single parity, can tolerate one disk failure).

Performance(especially read-heavy environments).

Cost(uses fewer drives than RAID 1 or 6 for the same capacity).

RAID 1 (B): Best for read-heavy workloads but doubles the storage needed (mirroring).

RAID 0 (C): No protection against disk failure.

RAID 6 (D): More protection (dual parity), but more write penalty and more disks needed.

RAID 1isdisk mirroring. It writes identical copies of data to two disks simultaneously, providing redundancy.

Minimum of 2 disks (no parity, no striping).

Excellent read performance, write performance equivalent to a single disk.

Providesfault tolerancebecause data is duplicated.

FCIP (Fibre Channel over IP) is a protocol used to connect Fibre Channel SANs across geographically dispersed locations over IP networks. It does this byencapsulating Fibre Channel frames into IP packets(Layer 3). This allows FC SAN traffic to be transmitted across IP-based WANs.

Ethernet networks(Layer 2) are not involved in the FCIP encapsulation process directly because FCIP uses IP packets.

Splitting LAN/SAN datais not the method used; FCIP encapsulatesall FC frames.

Separating LAN and SAN dataalso does not describe the tunneling function.