思科认证考试章节练习(2019.05.11)

单项选择题
在CorelDRaW中使用椭圆形工具进行绘制操作时，如果按住Shift＋Ctrl键，那么将可以绘制出哪些图形（）
A.以起始点为圆心的椭圆图形
B.以工作区中心为圆心的椭圆图形
C.以起始点为圆心的圆形
D.以工作区中心为圆心的圆形
多项选择题
Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications. What are two possible sources of trouble shown in the system？（）
A. fiber failure between Sites A and D
B. EDFA failure at Site A （clockwise direction）
C. EDFA failure at Site C （clockwise direction）
D. 15216 multiplexer at Site A （counter-clockwise direction）
E. OADM pass-through （West "OUT"） failure at site D （clockwise）
F. wavelengths 1 and 3 transmitter failures at Site A （clockwise direction）
单项选择题
请参见图示。交换机均为默认配置。主机 A 需要与主机 D 通信，但主机 A 没有其默认网关的 MAC 地址。哪些网络主机将收到主机 A 发送的 ARP 请求（）
A.只有主机 D
B.只有路由器 R1
C.只有主机 A、B 和 C
D.只有主机 A、B、C 和 D
E.只有主机 B 和 C
F.只有主机 B、C 和路由器 R1
单项选择题
Refer to the exhibit. LACP has been configured on Switch1 as shown. Which is the correct command set to configure LACP on Switch2？（）
A.Switch2# configure terminal Switch2（config）# interface range gigabitethernet3/1 -2 Switch2（config-if）# channel-group 5 mode auto
B.Switch2# configure terminal Switch2（config）# interface range gigabitethernet3/1 -2 Switch2（config-if）# channel-group 5 mode passive
C.Switch2# configure terminal Switch2（config）# interface range gigabitethernet3/1 -2 Switch2（config-if）# channel-group 5 mode desirable
D.Switch2# configure terminal Switch2（config）# interface range gigabitethernet3/1 -2 Switch2（config-if）# channel-group 5 mode on
单项选择题
IPv6每个字段包含多少位？（）
A.24
B.4
C.8
D.16
多项选择题
Which three of the statements below correctly describe the characteristics of Autonomous Systems in routed networks?（）
A. Within an AS, all routers must run either BGP or IBGP.
B. An AS uses exterior gatew ay protocols (EGPs) to exchange information with other autonomous systems.
C. An AS is a group of routers under the same technical administration.
D. Within an AS, routes learned through BGP can be redistributed using interior gateway protocols.
E. Wi thin an AS, routes learned through an interior protocol cannot be redistributed using BGP to other autonomous systems.
多项选择题
A company is using 6to4 tunneling within their IPv6 network. Which two statements about this kindof tunneling are accurate？（）
A.6to4 is a manual tunnel method
B.Prepending a reserved IPv6 code to the hexadecimal representation of 192.168.0.1 facilitates6to4 tunneling
C.Each 6to4 site receives a /48 prefix in a 6to4 tunnel
D.2002：：/48 is the address range specifically assigned to 6to4
E.Prepending 0x2002 with the IPv4 address creates an IPv6 address that is used in 6to4tunneling
单项选择题
Refer to the exhibit， which shows a PPPoA diagram and partial SOHO77 configuration.Which command needs to be applied to the SOHO77 to complete the configuration？（）
A.encapsulation aal5snap applied to the PVC
B.encapsulation aal5ciscoppp applied to the PVC
C.encapsulation aal5ciscoppp applied to the ATM0 interface
D.encapsulation aal5mux ppp dialer applied to the ATM0 interface
E.encapsulation aal5mux ppp dialer applied to the PVC
单项选择题
Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？（）
A.UDLD
B.spanning-tree loopguard
C.VTP mode transparent
D.switchport mode desirable
单项选择题
If it is properly deployed， a controller-based access point is capable of monitoring all vlans on a network when you select which of the following modes from the ap mode drop-down menu on the controller？（）
A.mirror
B.rogue detector
C.sniffer
D.monitor