CCNA 第四学期期末3.doc

1 What can work administrator do to recover from a lost router password? use the copy tftp: flash: command boot the router to bootROM mode and enter the mand to load the IOS manually from another router and issue the show running-mand to view the password boot the router to ROM monitor mode and configure the router to ignore the startup configuration when it initializes 2 Refer to the exhibit. A technician issues the show interface s0/0/mand on R1 while troubleshooting work problem. What two conclusions can be determined by from the output shown? (Choose two.) The bandwidth has been set to the value ofa T1 line. This interface should be configured for PPP encapsulation. There is no failure indicated in an OSI Layer 1 or Layer 2. The physical connection between the two routers has failed. The IP address of S0/0/0 is invalid, given the mask being used. 3 Refer to the exhibit. What statement is true about the core router devices? They use multiport working devices to switch traffic such as Frame Relay, ATM, or over the WAN. They provide working and WAN access interface ports that are used to connect to the service work. They provide termination for the digital signal and ensure connection integrity through error correction and line monitoring. They support multiple munications interfaces of the highest speed and are able to forward IP packets at full speed on all of those interfaces. 4 Which three parameters must be configured on a router in order to enable SSH? (Choose three.) retries hostname timeouts domain name asymmetrical keys routing protocol 5 Refer to the exhibit. PC1, PC2, and PC3 are co figured with dynamic address assignments. PC2 is assigned an IP address from the DHCP server. What would account for the IP addresses that are currently assigned to PC1 and PC3? Switch S2 port Fa0/12 is configured for full-duplex. These addresses were included in the DHCP server pools. Router R1 has a misconfigured IP address on interface Fa1/0. R1 interface Fa0/0 is n