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642-873Designing Cisco Network Service Architectures Exam (ARCH)

Exam number/code: 642-873Exam name: Designing Cisco Network Service Architectures Exam(ARCH)Questions & Answers: 346 Q&ARelated Certifications: CCDP

TestKing Cisco 642-873 Exam Questions & Answers

Question 1: Your newly appointed TestKing trainee wants to know which high availability design willdepend more on networks than devices. What would your reply be? A. ClusteringB. Token RingC. Parallel processingD. Fault toleranceE. Redundant topologyF. Tripe modular redundancy Answer: E

Question 2: Which two design concerns must be addressed when designing a multicast implementation?(Choose two.) A. Only the high-order 23 bits of the MAC address are used to map IP AddressesB. The 0x01004f MAC address prefix is used for mapping IP Addresses to MAC addressesC. Only the low-order 23 bits of the MAC address are used to map IP AddressesD. Only the low-order 24 bits of the MAC address are used to map IP AddressesE. The 0x01005e MAC address prefix is used for mapping IP Addresses to MAC addressesF. Only the low-order 23 bits of the IP Address are used to map MAC addresses Answer: E,F

Question 3: Tess King, the CEO of Toronto division of TestKing.com, want to know what thecharacteristics of RSVP are. What should you tell Mrs. King? A. RSVP itself provides bandwidth and delay guaranteesB. For RSVP to be end-to-end, all devices must support RSVPC. RSVP reservations are maintained by a centralized reservations server.D. An RSVP compatible QoS mechanism must be used to implement guarantees accordingto RSVP reservations. Answer: B,D Explanation:Resource Reservation Protocol. Protocol that supports the reservation of resources acrossan IP network. Applications running on IP end systems can use RSVP to indicate to othernodes the nature (bandwidth, jitter, maximum burst, and so on) of the packet streams theywant to receive. Also known as Resource Reservation Setup Protocol. Resource Reservation Protocol (RSVP) is an IETF-draft networking protocol dedicated tobeing the facilitator and carrier of standardized QOS information and parameters. RSVPcarries generic (industry-defined) QOS parameters from end nodes (inclusive) to each QOS-aware network device included in the path between RSVP session members. That is, RSVP

Exam: 642-873 Certification Questions & Answers

TestKing Cisco 642-873 Exam Questions & Answers

is a means by which end nodes and network devices can communicate and negotiate QOSparameters and network usage admission. Reference: Arch student guide p. B-23.

Question 4: You are a network administrator at TestKing. Your newly appointed TestKing trainee wantsto know which of the seven step enterprise campus design methodology precedes "designthe logical network." What will your reply be? A. Design the physical topologyB. Select appropriate system devices and assign IP addressesC. Assign IP addressesD. Select routing protocolsE. Create security policyF. Determine enterprise data requirements Answer: F

Question 5: What is one of the reasons that custom QoS ACLs are recommended over automatic QoSwhen configuring ports on a Catalyst 6500 for use with IP phones? A. 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B. 79xx IP phones do not mark protocol packets such as DHCP, DNS or TFP with non-zeroDSCP values.C. 79xx IP phones do not mark voice packets with optimal DSCP values.D. 79xx IP phones use a custom protocol to communicate CDP information to the switch. Answer: C Explanation:Section 8: Select the appropriate components and network model to support VoIP traffic (10questions)

Question 6: The Acme Anvil Corporation has two manufacturing sites and six sales offices. Each salesoffice requires 25 public IP addresses, and each manufacturing facility requires 210 public IPaddresses. If the company plans for 20 percent growth for each facility, how many Class Caddresses will it require? A. fiveB. fourC. sixD. eightE. sevenF. three Answer: F

TestKing Cisco 642-873 Exam Questions & Answers

Question 7: Which three modules of the Enterprise Network model will you include in your design?Select three. A. The Campus Core module.B. The Edge Distribution moduleC. The Management moduleD. The Corporate Internet moduleE. The Server Farm moduleF. The Building Distribution module Answer: A,C,E

Question 8: What are two benefits of choosing a site-to-site VPN instead of a private WAN? (Choosetwo) A. Usually less expensive.B. Guaranteed bandwidth.C. Globally available.D. Increased reliability. Answer: A,C Explanation:Site-to-site VPNs are primarily deployed to connect office locations of an enterprise. Theyprovide an alternative to the WAN infrastructure, while offering significant cost benefits. Theyenable new infrastructure applications such as extrantet, and extend and enhance networkconnectivity.Enterprise WAN requirements for traditional private WAN services, such as multiprotocolsupport, high -availability, scalability, and security, are also requirements for VPNs. VPNscan often meet these requirements more cost-effectively and with greater flexibility thanprivate WAN services using leased lines or virtual circuit technologies such as Frame Relayand ATM. Reference: Arch student guide p.9-27,9-28. Section 12: Design suitable storage networking solutions using Cisco AVVID principles (0questions)

Question 9: Morris Prosthetics is having problems with serialization delay on its WAN links. The linkscurrently carry less than 768 Kbps. Which Layer 2 mechanism can help solve the problem? A. Integrated Services moduleB. Compressed Real-Time Transfer ProtocolC. link fragmentation and interleavingD. differentiated service code points Answer: C

Question 10: What are three primary activities in the cycle of building an enterprise security strategy?(Choose three.)

TestKing Cisco 642-873 Exam Questions & Answers

A. activity auditB. ACL documentationC. administrationD. technology implementationE. policy establishmentF. feature evaluation Answer: A,D,E

Question 11: You work as a network technician at TestKing.com. Your boss, Mrs. Tess King, in spanning-tree terms. Match the terms with the appropriate descriptions.

Answer:

TestKing Cisco 642-873 Exam Questions & Answers

Explanation:

Question 12: Which three features are network design requirements that indicate a need for a highlyavailable network? (Choose three.) A. improved customer loyaltyB. minimum network equipment costsC. network intrusion detectionD. support of mission-critical applicationsE. reduced productivity lossesF. increased use of streaming media Answer: A,D,E

Question 13: How would you deploy the IP addressing scheme in the middle schools? A. a set of private IP addresses with four Class C address ranges for each middle schoolB. a set of private IP addresses with two Class C address ranges for each middle schoolC. a set of private IP addresses with two Class C addresses subnetted for each middleschoolD. a set of private IP addresses with four Class C addresses subnetted between the twomiddle schools Answer: B

TestKing Cisco 642-873 Exam Questions & Answers

Question 14: You are contracted as a network administrator for a well established company,TestKing.com. TestKing wants you to design and implement a new Campus Backbonemodule. It should have multicast and broadcast control, flexible topology, with no spanningtree loops. Cost effectiveness is a secondary consideration as money would be no option. What type of equipment would you recommend for use in this module? A. Mid-level Layer 2 switchesB. High-level Layer 2 switchesC. High-end routersD. High-end hubsE. Layer 3 switches Answer: E Explanation:The most flexible and scalable campus backbone consists of Layer 3 switches, as shown inthe figure. The backbone switches are connected by routed Gigabit Ethernet or GigabitEherChannel links. Layer 3 switched backbones offer these advantages:9) Reduced router peering10) Flexible topology with no spanning-tree loops11) Multicast and broadcast control in the backbone12) Scalability to arbitrarily large sizeReference: Arch student guide p.2-35

Question 15: Which three routing protocols can minimize the number of routes advertised in the network?(Choose three) A. IGRPB. RIPv2C. OSPFD. EIGRPE. BGP Answer: B,C,D

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