Server load balancing （SLB） is the process of deciding to which server a load-balancing device should send a client request for service. Which predictors are supported on ACE in order to select the best server to fulfill a client request？ （）

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• Which IBM host-based device driver allows for path failover， while also providing dynamic load balancing on a Windows 2000-based server（）

  A . PowerPath B . MPIO C . RDAC D . SDD

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• What is the result of entering the command port-channel load-balance src-dst-ip on an EtherChannel link？ （）

  A . Packets are distributed across the ports in the channel based on both the source and destination MAC addresses. B . Packets are distributed across the ports in the channel based on both the source and destination IP addresses. C . Packets are balanced across the ports in the channel based first on the source MAC address， then on the destination MAC address， then on the IP address. D . Packets are distributed across the access ports in the channel based first on the source IP address and then the destination IP addresses.

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• In order for a controller-based access point to be allowed to participate in aggressive load balancing， it musthave heard the client within how many seconds？（）

  A . 1 B . 5 C . 10 D . 15

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• What are two characteristics of Server Load Balancing router mode？（）

  A .  The design supports multiple server subnets Cisco 642-874： Practice Exam B .  An end-user sees the IP address of the real server C .  SLB routes between the outside and inside subnets D .  The source or destination MAC address is rewritten， but the IP addresses left alone E .  SLB acts as a "bump in the wire" between servers and upstream firewall or Layer 3 device

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• For a lightweight access point to participate in aggressive load balancing， it must have heard the client for how many seconds？（）

  A . 15 B . 10 C . 1 D . 5

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• Refer to the exhibit. You want to use all the routes in the EIGRP topology for IP load balancing. Which two EIGRP subcommands wou ld you use to accomplish this goal?（）https://assets.asklib.com/images/image2/2018073016331495540.jpg

  A . traffic - share balanced B . distance C . maximum- paths D . default - network E . variance

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• You have two EBGP peers connected via two parallel serial lines. What should you do to be able to load-balance between two EBGP speakers over the parallel serial lines in both directions？ （）

  A . nothing，BGP automatically load-balances the traffic between different autonomous systems on all available links B . peer between the eBGP speaker’s loopbacks， configuring eBGP multihop as required， and use an IGP to load-share between the two equal-cost paths between the loopback addresses C . configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the EBGP peer loopback address；it is also necessary to use the next-hop-self command D . use the ebgp-load-balance command on the neighbor statement on both sides E . configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the peer loopback address；it is also necessary to use the ebgp-multihop and next-hop-self command

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• It’s a configuration that experts are calling a "firewall sandwich，" with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich"？（）

  A .  single layer of firewalling B .  multiple layers of firewalling C .  firewall connections in either an active or standby state D .  an architecture in which all traffic between firewalls goes through application-specific server

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• When testing ICMP access to a functional load-balancing ACE VIP， it fails. What is the reason of this problem？ （）

  A .  The interface is shut down B .  An access list is denying ICMP C .  Routing is not configured properly D .  vip icmp-reply is inactive

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• In order for a controller-based access point to be allowed to participate in aggressive load balancing，it must have heard the client within how many seconds？（）

  A . 15 B . 10 C . 1 D . 5

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• You are configuring a JMS server with a need for load balancing the messages. To achieve the  load balance you should （）.

  A . use regular queues and topics   B . use distributed queues and topics C . not use subdeployments D . disable server affinity E . use message paging

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• Which type of scheme describes the default operation of Gateway Load Balancing Protocol  （GLBP）？（）

  A .  per host using a round robin scheme B .  per host using a strict priority scheme C .  per session using a round robin scheme D .  per session using a strict priority scheme E .  per GLBP group using a round robin scheme F .  per GLBP group using a strict priority scheme

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• Which of the following specification will allow you to： associate VLAN groups to STP instances so  you can provide multiple forwarding paths for data traffic and enable load balancing？ （）

  A .  IEEE 802.1d （STP） B .  IEEE 802.1s （MST） C .  IEEE 802.1Q （CST） D .  IEEE 802.1w （RSTP）

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• When executing the massload command to load catalog data into a WebSphere Commerce database on a remote DB2 server，which of the following can be used as valid values for the -method command line parameter？（）

  A . create B . import C . load D . sqlimport E . update

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• Lafeyette Productions is looking for a new ISP that has improved availability, load balancing, and catastrophe protection. Which type of ISP connectivity solution would be best?（）

  A . single run B . multi-homed C . stub domain EBGP D . direct BGP peering

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• You need to configure a single router into load balancing traffic across 4 unequal cost paths. Which routing protocols can satisfy this requirement?（）

  A . RIP v1 B . RIP v2 C . IGRP D . EIGRP E . OSPF F . IS-IS

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• 一个WLS实例配置了Multi-pool，分别为A，B，C，如果选择的是load-balance，如果一个请求获得connection从A，请问（）情况下会从B或者C拿connection。

  A . 都不能 B . A用完了 C . A坏了 D . 按照负载均衡算法

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• If A customers needed to load-balance across multiple data center. which Cisco product would the customer consider?（）

  A . ACE Global Site Selector B . Site Balancer C . ISR Wide Area Acceleration Server D . Nexus Site Balancer E . ASR Virtual Balanced Network

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• Which of the following is true when considering the Server load-balancing design within the E-Commerce Module of the Enterprise Campus network？（）

  A .  Routed mode requires the ACE run OSPF or EIGRP B .  Bridged mode switches a packet between the public and the private subnets when it sees itsMAC address as the destination C .  Two-armed mode will place the SLB inline to the servers， with different client-side and a server-side VLANs D .  One-armed mode， which uses the same VLAN for the client， the ACE， and the servers， requiresa traffic-diversion mechanism to ensure the traffic return from the server passes though the ACE

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• Lafeyette Productions is looking for a new ISP that has improved availability，load balancing，and catastrophe protection. Which type of ISP connectivity solution would be best？（）

  A .  single run B .  multi-homed C .  stub domain EBGP D .  direct BGP peering

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• pany uses GLBP to provide for router redundancy in the network.  Which describes the default  load balancing scheme used by the Gateway Load Balancing Protocol （GLBP）？（）

  A .  Per host basis using a strict priority scheme B .  Per session using a round-robin scheme C .  Per session using a strict priority scheme D .  Per GLBP group using a strict priority scheme E .  Per host basis using a round-robin scheme F .  Per GLBP group using a round-robin scheme

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• For a balanced three-phase △ -connected load, the average power absorbed by the load is P . Change the △ -connected load to Y-connected load, the power will :

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• Refer to the exhibit. How would you confirm on R1 that load balancing is actually occurring on the default - netw ork （0.0.0.0)？（）

  <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/ae2677f0b95075ecbebd837f23ecac04.jpg' /> A. Use ping and the show ip route command to confirm the timers for each default network resets to 0. B. Load balancing does not occur over default networks; the second route will only be used for failover. C. Use an extended ping al ong with repeated show ip route commands to confirm the gateway of last resort address toggles back and forth. D. Use the traceroute command to an address that is not explicitly in the routing table.

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• 负载均衡SLB到期之后，会对SLB的后端ECS实例造成什么影响？（)

  A．云服务器ECS本身不会受到影响 B．如果域名是解析到SLB上的，那么不会影响站点的访问 C．ECS服务器会同时到期 D．如果部署在ECS上的应用对应的域名是解析到SLB上的，那么会影响站点的访问

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