Refer to the exhibit. When running OSPF, What would cause router A not to form an adjacency with router B?（）

单项选择题Refer to the exhibit.What is the reason that the interface status is “administratively down,line protocol down”?（）

A.There is a mismatch in encapsulation types
B.The wrong type of cable is connected to the interface
C.The interface has been configured with the shutdown command
D.The interface is not receiving any keepalives
E.The interface needs to be configured as a DTE device
F.There is no encapsulation type configured

单项选择题Refer to the exhibit.What is the effect of the configuration that is shown?（）

A.It tells the router or switch to try establish an SSH connection first and if that fail to use telnet.
B.It configures a cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports.
C.It allows seven failed login attempts before the VTY lines are temporarily shutdown.
D.It configures the virtual terminal lines with the password 030752180500.
E.It configures SSH globally for all logins.

单项选择题What is the effect of using the service password-encryption command?（）

A.only passwords configured after the command has been entered will be encrypted
B.Only the enable password will be encrypted
C.Only the enable secret password will be encrypted
D.It will encrypt the secret password and remove the enable secret password from the configuration
E.It will encrypt all current and future passwords.

多项选择题Refer to the exhibit.The network administrator requires easy configuration options and minimal routing protocol traffic.Which two options provide adequate routing table information for traffic that passes between the two routers and satisfy the requests of the network administrator?（）

A.a dynamic routing procotol on InternetRouter to advertise summarized routers to CentralRouter.
B.a dynamic routing procotol on CentralRouter to advertise summarized routers to InternetRouter.
C.a static route on InternetRouter to direct traffic that is destined for 172.16.0.0/16 to CentralRouter.
D.a dynamic routing procotol on InternetRouter to advertise all routes to CentralRouer.
E.a dynamic routing procotol on CentralRouer to advertise all routes to InternetRouter
F.a static,default route on CentralRouter that directs traffic to InternetRouter.

单项选择题Refer to the exhibit.The speed of all serial links is E1 and the speed of the all Ethernet links is 100Mb s.A static route will be established on the Manchester router to the direct traffic toward the internet over the most direct path available.What configuration on the Manchester router will establish a router toward the internet for traffic that originates from workstation on the Manchester LAN?（）

A.iproute0.0.0.0255.255.255.0172.16.100.2
B.iproute0.0.0.0255.255.255.252128.107.1.1
C.iproute0.0.0.00.0.0.0128.107.1.1
D.iproute0.0.0.00.0.0.0172.16.100.1
E.iproute0.0.0.0255.255.255.255172.16.100.2
F.iproute0.0.0.00.0.0.0172.16.100.2