In a lab, R1 connects to R2, which connects to R3. R1 and R2 each have several working int

1 and I2 used at th e ISPs. R1 peers with I1 and R2; R2 peers with I2 and R1. R1 and R2 do not share a common subnet, relying on other routers internal to the Enterprise for IP connectivity between the two routers.Which of the following could be used to prevent potential routing loops in this design？（）

A. Using an iBGP mesh inside the Enterprise core

B. Configuring default routes in the Enterprise pointing to both R1 and R2

C. Redistributing BGP routes into the Enterprise IGP

D. Tunneling the packets for the i BGP connection between R1 and R2

nternet. A router named R2 joins your subnet with a segment named Private1. The Private1 segment has a network address of 10.128.4.0/26.Your computer named WKS1 requires access to servers on the Private1 network.

The WKS1 computer configuration is as shown in the following table.

Network Addresses

IPv4 Address 10.128.64.113

Subnet mask 255.255.252.0

Default Gateway 10.128.64.1

The routers are configured as shown in the following table.

Router ID Addresses

R1

interface 1

R1

interface 2 (To Internet)

10.128.64.1

131.107.108.37

R2

interface 1

R2

interface 2

10.128.64.10

10.128.4.1

WKS1 is unable to connect to the Private1 network by using the current configuration.You need to add a persistent route for the Private1 network to the routing table on WKS1.

Which command should you run on WKS1？（）

st s a route with outgoing interface S0/1/1. Host 172.16.3.3 uses telnet to connect to host 172.16.4.1.What will Router R1 do with the packets generated by host 172.16.3.3 because of the telnet,assuming the packets enter R1‘s F0/0 interface？（）interface Fastethernet 0/0ip address 172.16.1.1 255.255.255.0ip policy route - map Q2!route - map Q2 permitmatch ip address 101set interface s0/0/1!access - list 101 permit tcp host 172.16.3.3 172.16.4.0 0.0.0.255

A. The packet will be forwarded out S0/0 /1, or not at all.

B. The packet will be forwarded out S0/0/1 if it is up.

C. The packet will be forwarded out S0/1/1 if it is up.

D. The packet will be forwarded out S0/1/1 if it is up, or if it is not up, out s0/0/1.

E. The packet will be forwarded o ut S0/0/1 if it is up, or if it is not up, out s0/1/1.

Internet. A router named R2 joins your subnet with a segment named Private1. The Private1 segment has a network address of 10.128.4.0/26. Your computer named WKS1 requires access to servers on the Private1 network.The WKS1 computer configuration is as shown in the following table. Network Addresses IPv4 Address 10.128.64.113 Subnet mask 255.255.252.0 Default Gateway 10.128.64.1 The routers are configured as shown in the following table. Router ID Addresses R1 interface 1 R1 interface 2 (To Internet) 10.128.64.1 131.107.108.37 R2 interface 1 R2 interface 2 10.128.64.10 10.128.4.1 WKS1 is unable to connect to the Private1 network by using the current configuration.You need to add a persistent route for the Private1 network to the routing table on WKS1.Which command should you run on WKS1？（）

A. Route add -p 10.128.4.0/22 10.128.4.1

B. Route add p 10.128.4.0/26 10.128.64.10

C. Route add p 10.128.4.0 mask 255.255.255.192 10.128.64.1

D. Route add p 10.128.64.10 mask 255.255.255.192 10.128.4.0

n the serial link. Three PVCs (101, 102, and 103) are configured on subinterface S0/0.1, and one each (104 and 105) are on S0/0 .2 and S0/0.3. The configuration shows no configuration related to EIGRP WAN bandwidth control, and the bandwidth command is not configured at all.Which of the following is true about how IOS tries to limit EIGRP‘s use of bandwidth on S0/0？（）

A.R1 limi ts EIGRP to around 250Kbps on DLCI 102

B.R1 limits EIGRP to around 250Kbps on DLCI 104

C.R1 limits EIGRP to around 150Kbps on every DLCI

D.R1 does not limit EIGRP because noWAN bandwidth control has been configured

and R2 have PVCs connected to all other routers, but Routers R3 through R10 act as branch routers, with only two PVCs - one to R1 and one to R2. The routers u se IP subnet 10.1.1.0/24, with addresses 10.1.1.1, 10.1.1.2, and so on, through 10.1.1.10, respectively. The routers all use Inverse ARP to learn Frame Relay mapping information. All routers use a multipoint subinterface with network type point - tomultip oint nonbroadcast. A co - worker‘s implementation plan lists lots of configuration commands related to this design. The design states that all hosts should be able to ping all other hosts.Which commands are required for proper functioning of OSPF in this case？（）

A. frame - relay map commands on R3 - R10 referencing the other routers in this group

B. Nine OSPF neighbor commands on each router

C. Nine OSPF neighbor commands on R1 and R2, with only two such commands on R3 - R10

D. R1 and R2 with ip ospf prio rity 1 commands to ensure they become DR and BDR

E. R3 - R10 with ip ospf priority 0 commands to ensure they do not become DR or BDR

lly working in the subnet. Later, R5, whose OSPF priority is higher than the other four routers, joins the subnet.Which of the following are true about the OSPF database exchange process over this subnet at this point？（）

A. R5 will send its DD, LSR, and LSU packets to the 224.0.0.5 all - DR - routers multicast address.

B. R5 will send its DD, LSR, and LSU pack ets to the 224.0.0.6 all - DR - routers multicast address.

C. The DR will inform R5 about LSAs by sending its DD, LSR, and LSU packets to the 224.0.0.6 all- SPF - routers multicast address.

D. The DR will inform R5 about LSAs by sending its DD, LSR, and LSU pa ckets to the 224.0.0.5 all- SPF - routers multicast address.

图2-19(a)所示亚麻收割机传动机构是由曲柄摇杆机构的四个齿轮组成,齿轮1和曲柄AB刚性相连,齿轮2、3、4活套在E、C、D三根轴上,DC是摇杆,齿轮4作摆动,它正向摆动的角度比反向摆动的角度大些,由此传递运动.已知l_AB=200mm,l_BC=658mm,l_BE=299mm,l_CD=380mm,l_AD=930mm,r₁=130mm,1=80°,等角速度1=10rads,求4和6(F、G、H分别为各齿轮上两轮节圆的切点).

A.connect⋯with

B.connect⋯to

C.connect⋯from

D.connect⋯by

A.把connect给lj；

B.revoke connect to lj；

C.grant connect to lj；

D.grant connect to lj with admin option；