36. The EtherChannel between your LAN switch and the Internet router is not load-balancing efficiently. On the switch, there are several workstations with valid IP ranges. Which load-balance algorithms can you use in the switch in order to optimize this load balancing?
在你的网络交换机之间使用的以太通道但是没有开启负载均衡，有一些工作站的IP地址范 围，你可以怎么配置交换机来实现负载均衡?
(Choose four.) A. source IP address B. destination IP address C. per-packet load balance D. destination MAC address E. source MAC address
Answer: ABDE
37. Before inserting a new switch in the network, the network administrator checks that the VTP domain name is correct, the VTP mode is set to server, and revision is lower than the switches in the network. The administrator then configures interfaces and trunks, erases existing VLANs, and connects the switch to the network. Following that procedure, there is no connectivity in the network. What is a possible cause of this problem?
之前在网络中加入了一个新的交换机，网络管理员检查VTP域名是正确的。VTP模式设置为 服务器，修订号也比其他的交换机低。管理员配置接口和Trunk。清空了所有的VLAN后吧 交换机连接入网络。经过这些操作，交换机没有任何的网络连接。这是什么问题?
A. Because the configuration revision of the new switches is lower than the rest of the network, it can change the VLAN database of the other switches.
B. As a VTP server, the new switch deleted all VLANs of the network.
C. Erasing VLANs increases the VTP configuration revision.
清空VLAN 会影响到VTP的修订号
D. Since the configuration revision of the network is higher than the new switch, the VLAN database was automatically synchronized.
Answer: C
38. The network administrator wants to enable an EtherChannel between two switches in "on" mode. The administrator connects the cables and enables the interfaces, but while configuring the EtherChannel in the first switch, a spanning-tree loop was detected. Which two of these procedures can avoid this problem? (Choose two.)
网络管理员想在”on”模式下在两台交换机之间开启以太通道， 管理员用线路连接在交换机的 接口上。但是在配置第一台交换机的以太通道时。有一个生成树环路已经产生了。那两个措 施能够避免这个问题?
A. Configure the EtherChannel as "desirable" first. 配置以太通道的模式为“desirable”
B. Assign all interfaces to the same VLAN.
C. Disable PortFast on the interfaces in the EtherChannels.
D. Disable all interfaces first. F. Fix cabling problems.
Answer: AD
39. Customer X has a hub-and-spoke Frame Relay network, with a central office and two branch offices (RemoteA and RemoteB). Each location has only one physical link to the Frame Relay cloud and RemoteB has a router that is not a Cisco router. Since the installation, there is no connectivity between RemoteB and the central office. What is a possible solution to this issue?
首先关闭这些接口
E. Fast Ethernet and Gigabit Ethernet ports cannot be assigned to the same EtherChannel.
客户X 有一个HUBSPOKED的帧中继网络来连接中心办公室和两个分支办公室(A和B) ， 每个地方有一个物理线路连接到帧中继网络，B 有一个路由器不是CISCO的，安装后不能 建立B和中心办公室之间的链接，怎么可以解决这个问题?
A. Because Frame Relay IETF encapsulation is only configurable at interface level, you must use IETF encapsulation on all routers.
B. This is not a possible scenario. A dedicated Frame Relay link to RemoteB is mandatory at the central office.
C. The router at RemoteB must be replaced by a Cisco router.
D. Use Frame Relay IETF encapsulation on a per-VC basis on the central office router.
在中心办公室使用IETF来封装帧中继，在没有一个PVC上。
E. There is a problem in the Frame Relay cloud, because Cisco routers are compatible with IETF Frame Relay.
Answer: D
40. Refer to the exhibit. There are two sites connected across WAN links. All intersite and intrasite links always have the same routing metric. The network administrator sees only the top routers and links being used by hosts at both LAN A and LAN B. What would be two suggestions to load-balance the traffic across both WAN links? (Choose two.)
如图所示，都过WAN链路连接的两个网络。所有的内部路由和内部链路的度量值都是一样 的，网络管理员发现只有上面的路由器和线路被用来连接A和B。 ，怎么做能让网络可以负载 均衡?
A. Make HSRP track interfaces between the edge and core routers.
用GLBP替换HSRP
B. Replace HSRP with GLBP.
C. Add crossed intrasite links: R1-R4, R2-R3, R5-R8, and R6-R7.
增加交叉备份链路在：R1-R4, R2-R3, R5-R8, R6-R7
D. Make R3 and R8 have lower HSRP priority than R1 and R7.
E. Replace HSRP with VRRP.
Answer: BC
