350-601 Storage Network Practice Test 17 — 15 Questions

Question 1

During iSCSI configuration, the storage administrator requires authentication between initiator and target. Which method uses a bidirectional secret to verify both ends?

Accepted Answer

CHAP. CHAP (Challenge Handshake Authentication Protocol) can be one-way or mutual. Mutual CHAP requires both initiator and target to authenticate each other using secrets.

Answer

RADIUS

Answer

IPsec

Answer

Kerberos

Question 2

An engineer is configuring Fibre Channel PortChannels on a Cisco MDS switch. Which statement about Fibre Channel PortChannels is true?

Accepted Answer

They load-balance based on the source and destination WWPNs.. Fibre Channel PortChannels require all member ports to be of the same type (e.g., all E-ports). They load-balance across links and are compatible with VSAN trunking. They do not require the same speed on all ports, but it is recommended.

Answer

They require all member ports to be on the same VSAN.

Answer

They can include both E-ports and F-ports in the same PortChannel.

Answer

They are supported only in NPV mode.

Question 3

Which Fibre Channel address component uniquely identifies a port within a fabric and is assigned during fabric login (FLOGI)?

Accepted Answer

FCID. The FCID (Fibre Channel ID) is a 24-bit address assigned by the switch upon FLOGI. It consists of Domain, Area, and Port fields. WWPN is a permanent identifier, not assigned dynamically.

Answer

WWNN

Answer

Domain ID

Answer

WWPN

Question 4

A storage array uses thin provisioning. A volume is created with a virtual size of 1 TB but only 100 GB of physical storage is allocated initially. What happens when the host writes data beyond the currently allocated physical space?

Accepted Answer

The array automatically extends the volume by allocating more physical blocks from the pool.. Thin provisioning allocates physical storage on demand. Additional storage is allocated from a shared pool as needed. The array may overcommit, but writes succeed as long as pool has free space.

Answer

The write fails immediately.

Answer

The host must reconfigure the volume size.

Answer

The volume is expanded to 1 TB physical.

Question 5

In an FCoE environment, a CNA presents a VN-port to the network. Which protocol is used to establish the virtual link between the VN-port and the FCoE switch's VF-port?

Accepted Answer

FIP. FIP (FCoE Initialization Protocol) is used for discovery, login, and virtual link establishment between VN-ports and VF-ports. It replaces FC's fabric login (FLOGI) over Ethernet.

Answer

ARP

Answer

LLDP

Answer

DHCP

Question 6

A Cisco MDS switch has two VSANs (VSAN 10 and VSAN 20). The engineer wants to connect two switches using a single ISL that carries both VSANs. Which configuration is required on the ISL interface?

Accepted Answer

Configure the port as a trunk port (EISL).. An EISL (Extended ISL) is a trunk port that carries multiple VSANs. The interface must be configured as a trunk port using the 'switchport mode trunk' command (or 'trunk mode on' in some contexts) to allow multiple VSANs.

Answer

Use two separate ISLs, one for each VSAN.

Answer

Create a PortChannel and add the ISL.

Answer

Configure the port as a regular E-port.

Question 7

A storage network engineer is planning an FC SAN upgrade. Which two benefits does Fibre Channel PortChannel provide over a single ISL? (Choose two.)

Accepted Answer

Increased aggregate bandwidth. PortChannels in FC provide increased aggregate bandwidth by combining multiple links, and they offer redundancy: if one link fails, traffic is distributed among the remaining links.

Answer

Lower latency

Answer

Simplified zoning configuration

Answer

Support for different port types in the same channel

Question 8

An organization uses synchronous replication between two storage arrays for disaster recovery. Which three characteristics apply to synchronous replication? (Choose three.)

Accepted Answer

Write acknowledgment is sent only after data is written to both arrays.. Synchronous replication writes data to both primary and secondary arrays before acknowledging the write. This ensures zero RPO and minimal data loss, but increases write latency due to the round trip. It is typically used over short distances.

Answer

It requires less bandwidth than asynchronous replication.

Answer

It is suitable for long-distance links with high latency.

Question 9

A data center is implementing iSCSI with MPIO. Which three components are required for MPIO to function? (Choose three.)

Accepted Answer

Multiple network interfaces on the initiator. MPIO requires multiple network paths between initiator and target, multiple network interfaces (or HBAs) on the initiator, and multiple target portals (IP addresses) on the storage array. A single session cannot leverage MPIO.

Answer

CHAP authentication

Answer

Jumbo frames enabled

Question 10

A network engineer is configuring a new Fibre Channel switch to connect to an existing storage fabric. The switch will be used to aggregate multiple edge switches and must appear as a single Fibre Channel device to the core. Which port type should be used on the edge switch facing the core switch to achieve this?

Accepted Answer

NP-port. NP-port (N-Port Virtualization) is used on an edge switch in NPV mode to connect to the core fabric; it behaves like an N-port but allows multiple N-port IDs behind it.

Answer

F-port

Answer

N-port

Answer

E-port

Question 11

A storage administrator needs to isolate traffic between two departments on the same Fibre Channel SAN infrastructure. Each department has its own storage array and hosts. Which technology should be used to create separate logical fabrics without additional hardware?

Accepted Answer

VSANs. VSANs (Virtual SANs) allow partitioning of a single physical Fibre Channel fabric into multiple isolated logical fabrics, similar to VLANs in Ethernet.

Answer

NPV

Answer

Zoning

Answer

PortChannels

Question 12

An engineer is configuring zoning on a Cisco MDS switch. The requirement is to allow a single host HBA to access two storage array ports. Which zone configuration meets this requirement?

Accepted Answer

Create one zone with the host's WWPN and one storage port WWPN, and another zone with the host's WWPN and the second storage port WWPN.. The recommended practice for Fibre Channel zoning is to use single-initiator zones, where each zone contains one host WWPN and one storage port WWPN. To allow a single host HBA to access two storage array ports, two zones should be created: the first zone includes the host's WWPN and the first storage port's WWPN, and the second zone includes the same host's WWPN and the second storage port's WWPN. This prevents direct communication between storage ports (which could cause issues) and follows Cisco best practices for MDS zoning. Option C correctly implements this configuration. Options A and B use port IDs or a single zone with multiple targets, which are less secure and not recommended. Option D creates a single zone with all three WWPNs, which allows the storage ports to communicate with each other, potentially leading to errors or instability.

Answer

Create a zone with the host's port ID and both storage port IDs.

Answer

Create one zone with all three WWPNs.

Answer

Create a zone with the host's WWPN and both storage ports as a single zone.

Question 13

A data center architect is designing an FCoE deployment. The network must support lossless Ethernet for storage traffic. Which set of IEEE standards must be enabled on the Ethernet switches to meet this requirement?

Accepted Answer

802.1Qbb (PFC), 802.1Qaz (ETS, DCBX). FCoE requires lossless Ethernet provided by Priority Flow Control (PFC - 802.1Qbb), Enhanced Transmission Selection (ETS - 802.1Qaz), and Data Center Bridging Exchange (DCBX - 802.1Qaz).

Answer

802.3ae (10GbE), 802.3ba (40/100GbE), 802.3by (25GbE)

Answer

802.1Q (VLAN tagging), 802.1p (CoS), 802.3ad (LACP)

Answer

802.1X (port security), 802.1AE (MACsec), 802.1AR (secure device identity)

Question 14

An iSCSI storage array is being deployed with two network interfaces for redundancy. The hosts also have two iSCSI initiators. To ensure load balancing and failover, which feature should be configured?

Accepted Answer

MPIO. Multipath I/O (MPIO) allows multiple paths between initiator and target for redundancy and load balancing.

Answer

Jumbo frames

Answer

VLAN tagging

Answer

CHAP authentication

Question 15

A storage administrator wants to provide a volume that appears larger than its actual physical capacity, allocating storage blocks only as data is written. Which storage provisioning method is being described?

Accepted Answer

Thin provisioning. Thin provisioning allows over-allocation of storage capacity, presenting a large logical volume to hosts while using physical storage only as needed.

Answer

Snapshot

Answer

Thick provisioning

Answer

RAID-5