Free‎ Cisco 642-355 Training Download With All New Exam Questions With VCE And PDF

CCNA Exam Certification Guide is a best-of-breed Cisco 642-355 exam study guide that has been completely updated to focus specifically on the objectives.Senior instructor and best-selling author Wendell Odom shares preparation hints and HP0-Y36 tips to help you identify areas of weakness and improve both your conceptual and hands-on knowledge.Cisco 642-355 Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.

Exam A
QUESTION 1
Which technology should be used to provide transparent low latency FC transport across a metropolitan area?
A. DWDM
B. FCIP
C. iSCSI
D. iFCP

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 2
Which statement is true concerning the Cisco MDS switch when operating in native interop mode?
A. The MDS switch can interoperate with Non-MDS switches that are certified by SNIA.
B. The MDS switch can interoperate with Non-MDS switches that support “MDS Native” mode.
C. The MDS switch can interoperate with Non-MDS switches that properly adhere to Fibre Channel switch standards.
D. The MDS switch cannot interoperate with Non-MDS switches.

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 3
Refer to the exhibit. Your customer has an existing SAN with eight edge switches and two core switches. In your detailed assessment, which metric will help you convince the customer to consider an alternative, more highly available topology?

A. SFP characteristics
B. total port count
C. cost of edge switch devices
D. total versus usable ports for end devices

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 4
A customer would like to add Cisco MDS switches to an existing Brocade environment with minimal disruption. The Brocade switches are using PID-0 mode. Which two features will enable the creation of a Cisco-Brocade heterogeneous fabric without restricting the feature set of either switch? (Choose two.)
A. interop mode 1
B. interop mode 2
C. interop mode 3
D. IVR
E. PortChannels
F. CWDM

Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 5
Your customer has a number of data storage requirements:
servers are not responsible for volume management or data migration storage is provisioned in real time legacy and heterogeneous storage assets can be consolidated and fully utilized data can be protected using simplified snapshot and replication techniques data can be assigned to different classes easily Which solution would meet these requirements?
A. VSANs
B. Wide-Area Application Services (WAAS)
C. fabric-based virtualization
D. LUN zoning
E. host-based virtualization

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 6
Select three advantages of using fabric-based storage virtualization instead of host-based virtualization. (Choose three.)
A. offers a single point of management
B. supports heterogeneous storage
C. does not require a host agent
D. insulates the hosts from storage changes
E. provides mirroring

Correct Answer: ACD Section: (none) Explanation Explanation/Reference:
QUESTION 7
Which are two characteristics of the Cisco MDS Series fan modules? (Choose two.)
A. Supervisor modules shut down the fan modules when the air temperature is below a preset threshold.
B. If the Fan Status LED turns red, a fan has failed and the module must be replaced.
C. Fan modules monitor air temperature and shut down if the temperature exceeds a preset threshold.
D. Fan modules do not require the switch to be powered off in order to be replaced.

Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 8
Your customer is using an IPS-8 module in its data center to provide FCIP connectivity to 20 remote sites.
It has encountered connectivity problems at four of the remote sites. After investigating, the customer’s
network administrator found that the IPS-8 is sending 2300-byte packets, but the receiving switches at the
four remote sites do not support jumbo frames.
What should you do?

A. Disable packet shaping on the IPS-8
B. Reduce the minimum retransmit timeout
C. Disable jumbo frames on the IPS-8
D. Enable Path MTU discovery

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 9
Refer to the exhibit. A customer plans to add a tape backup subsystem to its existing storage network. In which location should the customer place the tape backup device in order to provide the best performance during backup and recovery?

A. A
B. B
C. C
D. D

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 10
Your SAN environment requires redundant fabrics with redundant connectivity for 40 database hosts at 2 Gbps of throughput per host. Which two of these configurations are possible? (Choose two.)
A. two 48-port line cards
B. four 48-port line cards
C. four 32-port line cards
D. six 16-port line cards
E. two 32-port line cards and two 16-port line cards

Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 11
Your customer wants to implement a SAN with redundant fabrics supporting 600 device ports. Which two Cisco MDS 9000 Family configurations will meet the customer’s needs? (Choose two.)
A. two MDS 9509 switches with redundant Supervisor-1 modules
B. two MDS 9509 switches with redundant Supervisor-2 modules
C. two MDS 9513 switches with redundant Supervisor-1 modules
D. two MDS 9513 switches with redundant Supervisor-2 modules

Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 12
A customer has a need to synchronously replicate data from the primary data center to a standby data center that is 30 kilometers away. The customer owns the fiber between the two data centers and uses the link for Gigabit Ethernet connectivity today. The Gigabit Ethernet connection is heavily utilized and generally remains at 90-percent utilization. The customer expects that the replication traffic will require approximately 30 MBps, and is looking for a low-cost solution.
Which replication solution would you recommend?
A. FCIP
B. CWDM
C. DWDM
D. iSCSI

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 13
Which SAN extension topology is a low-latency, cost-effective, high-bandwidth solution that is suitable only within a limited geographical area?
A. FCIP
B. DWDM
C. CWDM
D. SONET/SDH
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 14
Refer to the exhibit. What port type should be used between the two switches to maximize performance?

A. B
B. E
C. F
D. NL
E. TE

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 15
Which of these provides fabric-based virtualization for multiple independent software vendors?
A. Storage Services Module (SSM)
B. Cisco MDS 9000 32-port 1/2-Gbps Fibre Channel module
C. Multiprotocol Services module
D. Cisco MDS 9513 Supervisor 2

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 16
How does Role-Based Access Control (RBAC) enhance manageability in an environment with VSANs?
A. limits operator errors by isolating user management domains within a large physical infrastructure
B. specifies port membership to a specific VSAN
C. configures security options for host ports that are assigned to a VSAN
D. configures VSAN membership for specific trunk ports

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 17
Your customer uses a custom change-management application. The customer wants running configuration files from Cisco MDS 9000 switches to be saved automatically to an FTP server every night. How can this be accomplished?
A. The customer must purchase Fabric Manager Server to set up automated jobs.
B. The customer must purchase the Enterprise license to enable Batch Job Automation.
C. The customer can use the CFS feature to distribute a command job to each switch in the fabric.
D. The customer can use the CLI Command Scheduler to set up automated jobs.

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 18
Your customer has implemented an IPS-8 for iSCSI connectivity to workgroup servers. How can this customer prevent unauthorized hosts from connecting to the Cisco MDS 9000 fabric through the iSCSI interfaces?
A. Configure RADIUS authentication
B. Configure IPSec encryption on the IPS-8
C. Configure IP ACLs on the IPS-8
D. Configure fabric binding on the IPS-8

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 19
What is the definition of fan-in ratio as it applies to SANs?
A. the ratio of host ports that need to access a single storage port
B. the ratio of storage ports to a single host port
C. the amount of aggregate port bandwidth in the path from storage port to host port
D. the amount of aggregate bandwidth of ISLs in the path from host port to storage port

Correct Answer: A Section: (none) Explanation
Explanation/Reference: QUESTION 20
Your customer has 40 servers attached to the edge switch in a core-edge design. Each server’s average throughput is between 22 and 35 MB. How many 4 GB ISLs should be provisioned between the edge and the core, and what will the ISL oversubscription ratio be?
A. 4, 20:1
B. 8, 5:1
C. 4, 10:1
D. 8, 10:1

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 21
Which three solutions would be suitable for data replication between two data centers separated by 450 km? (Choose three.)
A. FCIP over routed IP network
B. FCIP over SONET/SDH
C. iSCSI over SONET/SDH
D. CWDM
E. DWDM
F. dark fiber

Correct Answer: ABE Section: (none) Explanation
Explanation/Reference:
QUESTION 22
What are three key benefits of implementing a SAN using iSCSI? (Choose three.)
A. uses existing IP networking, monitoring, and management infrastructure
B. is more efficient than FC since it requires fewer encapsulations
C. maintains consistent performance over IP networks of varying distances
D. significant capital cost reduction by substituting iSCSI as a transport technology
E. extends existing FC SAN to IP connected hosts

Correct Answer: ADE Section: (none) Explanation
Explanation/Reference:
QUESTION 23
Refer to the exhibit. In this scenario, the total bandwidth requirement is 1500 MBps but there are 100 hosts that each need 15MBps of bandwidth. Which two statements are correct about the topologies shown in the exhibit? (Choose two.)

A. If the iSCSI configuration has two IPS-8 modules, it will not be oversubscribed.
B. The Fibre Channel implementation will require 100 HBA ports.
C. iSCSI is the more cost-effective solution with high fan-in ratios.
D. The Fibre Channel implementation is the more cost-effective solution with high fan-in ratios.
E. The Fibre Channel implementation would require two 32-port switching modules in the Cisco MDS switches per fabric.

Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 24
A government agency data center that is used for tax processing is located in an earthquake fault zone. A backup data center, located 300 km away, is linked to the main data center over an OC-3 connection. Which of the following provides the best solution to extend the SAN for business continuance and for support of their IP applications?
A. synchronous replication using FCIP
B. iSCSI
C. FCIP and asynchronous replication
D. dark fiber connectivity and use of synchronous replication over FC

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 25
A customer recently deployed a pair of Cisco MDS 9216i Multilayer Fabric Switches to support an ERP application. The MDS 9216i expansion slot is still unused. The customer examined other infrastructure services and applications to determine if they should leverage the SAN storage capacity, and decided that it would be beneficial to attach eight Microsoft Exchange servers to the SAN. Each Microsoft Exchange server generally drives approximately 50 MBps of disk throughput and has two Fibre Channel host bus adapters.
Which line card should be used to support the Microsoft Exchange server SAN connectivity?
A. 16-port Fibre Channel line card
B. 32-port Fibre Channel line card
C. Multiprotocol Services Module line card
D. None; use the IP storage interfaces.

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 26
A customer is concerned about the security of its SAN. It wants to prevent unauthorized hosts and switches from connecting to the SAN fabric. Which technology should be enabled on the Cisco MDS 9000 SAN to accommodate this customer requirement?
A. DH-CHAP
B. Auto-Learn
C. role-based authorization
D. zones
E. SSH

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 27
What effect does VSAN technology have on typical capacity planning for a storage network?
A. Because of the complete isolation of VSANs, more ports are required in a VSAN environment than in a non-VSAN environment.
B. When capacity planning where VSANs will be implemented, each VSAN must be capacity planned independently of all other VSANs.
C. VSANs are over provisioned separately to provide for capacity growth.
D. Unused ports can easily be redeployed for other applications in other VSANs.

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 28
What are two MDS features that increase the efficiency of a multiple switch Fibre Channel fabric? (Choose two.)
A. Port Channel
B. CDP
C. FCP
D. FCC E. CUP

Correct Answer: AD Section: (none) Explanation
Explanation/Reference:
QUESTION 29
Your customer has implemented an IPS-8 for FCIP connectivity to remote sites. How can this customer prevent unauthorized hosts from connecting to the Cisco MDS 9000 fabric through the FCIP interfaces?
A. Configure RADIUS authentication
B. Configure IPSec encryption on the IPS-8
C. Configure IP ACLs on the IPS-8
D. Configure fabric binding on the IPS-8

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 30
Which Cisco MDS feature alleviates a head-of-line blocking condition when occasional bursts of traffic exceed the capacity of an end device to receive data?
A. VOQs
B. VSAN allowed list
C. FCC
D. QoS

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 31
What should you do to allow iSCSI hosts on multiple subnets to connect to a single GigE interface on an IPS module?
A. configure multiple VSANs on the IPS module iSCSI interface
B. configure QoS on the IPS module iSCSI interface
C. configure QoS on the IPS module GigE interface
D. configure VLAN subinterfaces on the IPS module GigE interface

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 32
Which tool requires the Cisco Fabric Manager Server License in order to operate?
A. Cisco Performance Manager
B. Cisco Fabric Manager
C. Cisco SAN Extension Tuner
D. Cisco Fabric Analyzer

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 33
What are two ways of preventing unauthorized hosts from connecting to the management interface of a Cisco MDS 9000 Family switch? (Choose two.)
A. use SNMPv3 only
B. configure IP ACLs
C. configure management VSANs
D. use digital certificates
E. implement RBAC

Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 34
Which Cisco MDS 9500 Series feature addresses the customer requirement for five nines (99.999-percent) availability?
A. active and standby FC line cards
B. virtual output queuing (VOQ)
C. SSM card is installed in the switch
D. nondisruptive software upgrades
E. redundant fan cards

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 35
Which three of these Cisco storage and networking devices are optimized for use in FCIP SAN Extension implementations? (Choose three.)
A. MDS 9216i Multilayer Fabric Switch
B. IPS-8
C. MDS 9120 Multilayer Fabric Switch
D. MDS 9140 Multilayer Fabric Switch
E. MPS-14/2
F. SSM
Correct Answer: ABE Section: (none) Explanation

Explanation/Reference:
QUESTION 36
Select three characteristics of the Cisco coarse wave division multiplexing (CWDM) solution. (Choose three.)
A. multiplexes up to eight wavelengths across a single fiber pair
B. supports a maximum connection length of 220 kilometers
C. supports both linear and ring topologies
D. requires OADMs (optical add/drop multiplexers) to aggregate multiple wavelengths across the same fiber pair
E. can be optically amplified to extend the distance characteristics

Correct Answer: ACD Section: (none) Explanation
Explanation/Reference:
QUESTION 37
A customer has two data centers connected by dark fiber and also has a requirement for synchronous data replication between the data centers. If the data centers are 48 km apart, what is the most cost effective solution?
A. CWDM
B. IVR
C. FSPF
D. DWDM
E. Native FC

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 38
What are three characteristics of OLTP storage traffic? (Choose three.)
A. small I/O size
B. large I/O size
C. sustained throughput
D. bursty throughput
E. latency-sensitive
F. not latency-sensitive

Correct Answer: ADE Section: (none) Explanation
Explanation/Reference: QUESTION 39
Which MDS 9000 feature provides protection against rogue hosts impersonating legitimate hosts?
A. Port mode security
B. DH-CHAP
C. Fabric binding
D. SSH

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 40
You are implementing an FCIP solution for SAN extension between two data centers using the Cisco MDS 9000 platform. For redundancy, there are two Metro Ethernet paths between the data centers. How can you specify the primary and secondary path for each FCIP tunnel?
A. Configure OSPF routing on the IPS-8
B. Configure EIGRP routing on the IPS-8
C. Configure static routes on the IPS-8
D. Configure QoS on the IPS-8

Correct Answer: C Section: (none) Explanation
Explanation/Reference:

The VVJHV contains more than 400 practice questions for the Cisco 642-355 exams, including simulation-based questions. Also contains hands-on exercises and a customized copy of the Cisco 642-355 exams network simulation software.