Pass4sure Cisco Certification

Designing Cisco Network Service Architectures Exam

Exam Number: 642-873
Associated Certifications: CCDP
Duration: 75 minutes (60 – 70 questions)
Available Languages: English
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Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-873 ARCH Designing Cisco Network Service Architectures Exam is the exam associated with the CCDP certification. This exam tests a candidate’s knowledge of the latest development in network design and technologies, including network infrastructure, intelligent network services and converged network solutions. Candidates can prepare for this exam by taking the ARCH Designing Cisco Network Service Architectures course.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Design advanced core enterprise networks
Design campus Infrastructure using best practices
Design a High Availability enterprise network
Design a high availability WAN
Design network management services
Design IP multicast services
Describe enterprise VoWLAN design considerations

Design an enterprise data center
Design a high availability data center network that is modular, flexible and meets standards
Describe the components and technologies of a SAN network
Design an effective E-Commerce module

Design security services
Utilize firewalls
Utilize the NAC appliance
Utilize IPsec VPNs

Question: 1
Which of these Layer 2 access designs does not support VLAN extensions?

A. FlexLinks
B. loop-free U
C. looped square
D. looped triangle
E. loop-free inverted U
Answer: B Question: 2
Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual (counter-rotating) ring topology?

A. DTP B. RPR C. SDH
D. CWDM E. DWDM
Answer: B Question: 3
Which three of these are elements of the Cisco Unified Wireless Network architecture? (Choose three)

A. cell phones
B. remote access
C. mobility services
D. network management
E. network unification
F. network decentralization
Answer: C, D, E Question: 4
Refer to the exhibit.

TK

Exam Name: Designing Cisco Network Service Architectures Exam
Exam Type: CISCO
Exam Code: 642-873 Total Questions: 65

Which two of these are correct regarding the recommended practice for distribution layer design?
(Choose two.)

A. use a redundant link to the core
B. use a Layer 2 link between distribution switches
C. never use a redundant link to the core because of convergence issues
D. use a Layer 3 link between distribution switches with route summarization
E. use a Layer 3 link between distribution switches without route summarization
Answer: A, D Question: 5
Which of these terms refers to call issues that cause variations in timing or time of arrival?

A. queuing
B. jitter
C. packet loss

TK

Exam Name: Designing Cisco Network Service Architectures Exam
Exam Type: CISCO
Exam Code: 642-873 Total Questions: 65

D. digitized sampling
E. signal-to-noise ratio ratio
Answer: B Question: 6
Which two of these are characteristics of an IDS sensor? (Choose two.)

A. passively listens to network traffic
B. is an active device in the traffic path
C. has a permissive interface that is used to monitor networks
D. traffic arrives on one IDS interface and exits on another
E. has a promiscuous interface that is used to monitor the network
Answer: A, E Question: 7
In base e-Commerce module designs, where should firewall perimeters be placed?

A. core layer
B. Internet boundary
C. aggregation layer
D. aggregation and core layers
E. access and aggregation layers
Answer: A Question: 8
In which two locations in an enterprise network can an IPS sensor be placed? (Choose two.)

A. bridging VLANs on two switches
B. bridging two VLANs on one switch
C. between two Layer 2 devices with trunking
D. between two Layer 2 devices without trunking
E. between a Layer 2 device and a Layer 3 device with trunking
Answer: C, D Question: 9
What is a virtual firewall?

A. another name for a firewall deployed in routed mode
B. another name for a firewall deployed in transparent mode
C. a separation of multiple firewall security contexts on a single firewall
D. a firewall that, when deployed in routed mode, can support up to 1000 VLANs per context
E. a firewall that has multiple contexts, all of which share the same policies (such as NAT and
ACLs)
Answer: C Question: 10
In a VoWLAN deployment, what is the recommended separation between cells with the same channel?

A. 19 dBm

TK

Exam Name: Designing Cisco Network Service Architectures Exam
Exam Type: CISCO
Exam Code: 642-873 Total Questions: 65

B. 7 dBm
C. 10 dBm
D. 6 dBm
E. 5 dbm to 10 dBm
Answer: A Question: 11
Why is STP required when VLANs span access layer switches?

A. to ensure a loop-free topology
B. to protect against user-side loops
C. in order to support business applications
D. because of the risk of lost connectivity without STP
E. for the most deterministic and highly available network topology
Answer: B Question: 12
Which site-to-site VPN solution allows Cisco routers, PIX Firewalls, and Cisco hardware clients to act as remote VPN clients in order to receive predefined security policies and configuration
parameters from the VPN headend at the central site?

A. Easy VPN
B. GRE tunneling
C. Virtual Tunnel Interfaces
D. Dynamic Multipoint VPN
E. Group Encrypted Transport VPN
Answer: A Question: 13
Which two design concerns must be addressed when designing a multicast implementation?
(Choose two.)

A. only the low-order 23 bits of the MAC address are used to map IP addresses B. only the low-order 24 bits of the MAC address are used to map IP addresses C. only the high-order 23 bits of the MAC address are used to map IP addresses D. only the low-order 23 bits of the IP address are used to map MAC addresses
E. the 0×01004f MAC address prefix is used for mapping IP addresses to MAC addresses
F. the 0×01005e MAC address prefix is used for mapping IP addresses to MAC addresses
Answer: A, F Question: 14
Which two of these are recommended practices with trunks? (Choose two.)

A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network
E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

Answer: B, E

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Recommended Training about 642-873 exam PDF
The following courses are the recommended training for 642-873 exam PDF.
642-873 Q & A with Explanations
642-873 Audio Exam
642-873 Study Guide
642-873 Preparation Lab

Exam Number/Code: 642-873
Exam Name: Designing Cisco Network Service Architectures Exam

“Designing Cisco Network Service Architectures Exam”, also known as 642-873 exam, is a Cisco certification.
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With the complete collection of questions and answers, Pass4sure has assembled to take you through 65 Q&As to your 642-873 Exam preparation. In the 642-873 exam resources, you will cover every field and category in CCDP helping to ready you for your successful Cisco Certification.

Questions and Answers : 65 Q&As
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