EMC E10-001 Online Practice Questions and Exam Preparation

EMC E10-001 Online Questions & Answers

• Question 191:

  What determines how far back the recovery points can go in a continuous data protection (CDP) solution?

  A. Amount of space that is configured for the journal
  B. Size of the CDP appliance used for replication
  C. Size of the source and replica volume
  D. Type of write splitter used for replication
  A. Amount of space that is configured for the journal

• Question 192:

  In a CAS environment, what is used to generate a content address?

  A. Binaries of the data
  B. Combination of data and metadata of the object
  C. Location of the object
  D. Object metadata
  A. Binaries of the data

• Question 193:

  An organization plans to deploy an array-based local replication solution. They identified that the change to the source volume is less than 30%. They need a solution in which the replica devices require a small fraction of the size of the source volumes.

  Which solution should be recommended to the organization?

  A. Pointer-based virtual replication
  B. Continuous data protection
  C. Synchronous replication
  D. Pointer-based full volume replication
  A. Pointer-based virtual replication

• Question 194:

  Which operation is performed by a scale-out NAS when it receives a large write I/O from its clients?

  A. I/O is striped across multiple nodes for processing
  B. I/O is sent to the high performance node in the cluster for processing
  C. A new node is dynamically added to the cluster to process the I/O
  D. I/O is sent to the high storage capacity node in the cluster for processing
  A. I/O is striped across multiple nodes for processing

  ---

  NAS Implementation - Scale-out NAS The scale-out NAS implementation pools multiple nodes together in a cluster. A node may consist of either the NAS head or storage or both. The cluster performs the NAS operation as a single entity. A scale-out NAS provides the capability to scale its resources by simply adding nodes to a clustered NAS architecture. The cluster works as a single NAS device and is managed centrally. Nodes can be added to the cluster, when more performance or more capacity is needed, without causing any downtime. Scale-out NAS provides the flexibility to use many nodes of moderate performance and availability characteristics to produce a total system that has better aggregate performance and availability. It also provides ease of use, low cost, and theoretically unlimited scalability.

  Scale-out NAS creates a single file system that runs on all nodes in the cluster. All information is shared among nodes, so the entire file system is accessible by clients connecting to any node in the cluster. Scale-out NAS stripes data across all nodes in a cluster along with mirror or parity protection. As data is sent from clients to the cluster, the data is divided and allocated to different nodes in parallel. When a client sends a request to read a file, the scale-out NAS retrieves the appropriate blocks from multiple nodes, recombines the blocks into a file, and presents the file to the client. As nodes are added, the file system grows dynamically and data is evenly distributed to every node. Each node added to the cluster increases the aggregate storage, memory, CPU, and network capacity. Hence, cluster performance also increases. EMC E10-001 Student Resource Guide. Module 7: Network-Attached Storage (NAS)

• Question 195:

  Which iSCSI discovery mechanism requires manual configuration of the initiator with the target's network portal?

  A. SendTargets discovery
  B. iSCSI service location discovery
  C. Internet Storage Name Service
  D. iSCSI domain name discovery
  A. SendTargets discovery

• Question 196:

  Which information security framework goal is compromised by a passive attack on an IT infrastructure?

  A. Confidentiality
  B. Integrity
  C. Availability
  D. Repudiation
  A. Confidentiality

• Question 197:

  Why would an iSCSI solution be implemented?

  A. All storage arrays supply GigE ports
  B. Block storage over IP is much faster than FC
  C. iSCSI HBAs are inexpensive
  D. Leverage existing IP network infrastructures
  D. Leverage existing IP network infrastructures

  ---

  Drivers for IP SAN Traditional SAN enables the transfer of block I/O over Fibre Channel and provides high performance and scalability. These advantages of FC SAN come with the additional cost of buying FC components, such as FC HBA and switches. Organizations typically have an existing Internet Protocol (IP)-based infrastructure, which could be leveraged for storage networking. Advancements in technology have enabled IP to be used for transporting block I/O over the IP network. This technology of transporting block I/Os over an IP is referred to as IP SAN. IP is a mature technology, and using IP as a storage networking option provides several advantages. When block I/O is run over IP, the existing network infrastructure can be leveraged, which is more economical than investing in a new SAN infrastructure. In addition, many robust and mature security options are now available for IP networks. Many long distance, disaster recovery (DR) solutions are already leveraging IP-based networks. With IP SAN, organizations can extend the geographical reach of their storage infrastructure. iSCSI is encapsulation of SCSI I/O over IP. iSCSI is an IP based protocol that establishes and manages connections between host and storage over IP. iSCSI encapsulates SCSI commands and data into an IP packet and transports them using TCP/IP. iSCSI is widely adopted for connecting servers to storage because it is relatively inexpensive and easy to implement, especially environments in which an FC SAN does not exist.

  EMC E10-001 Student Resource Guide. Module 6: IP SAN and FCoE

• Question 198:

  A department in an organization requires 300 GB of storage space for a business application. The production LUN is RAID 1+0 protected and has both a local and a remote replica. The local replica is a RAID 1 LUN and the remote replica is on a five disk RAID 5 LUN.

  If the raw disk storage cost per GB is $3.00, what is the chargeback cost to the department for application storage?

  A. $2,700
  B. $3,600
  C. $4,500
  D. $4,725
  D. $4,725

• Question 199:

  Which type of login is performed between an N_Port and an F_Port in a Fibre Channel (FC) SAN environment?

  A. FLOGI
  B. PLOGI
  C. PRLI
  D. WWPN
  A. FLOGI

• Question 200:

  What is an example of corrective control?

  A. Deploying role-based access control to manage permissions
  B. Running an antivirus program after denial of service
  C. Setting up user accounts and passwords to control unauthorized access
  D. Encrypting the data in-flight and data-at-rest
  B. Running an antivirus program after denial of service

  ---

  Security Controls: Classification Based on the roles they play, controls are categorized as preventive, detective, and corrective. The preventive control attempts to prevent an attack; the detective control detects whether an attack is in progress; and after an attack is discovered, the corrective controls are implemented. Preventive controls avert the vulnerabilities from being exploited and prevent an attack or reduce its impact. Corrective controls reduce the effect of an attack, whereas detective controls discover attacks and trigger preventive or corrective controls. For example, an Intrusion ejection/Intrusion Prevention System (IDS/IPS) is a detective control that determines whether an attack is underway and then attempts to stop it by terminating a network connection or invoking a firewall rule to block traffic. EMC E10-001 Student Resource Guide. Module 14: Securing the Storage Infrastructure