CCNA Routing and Switching Complete Study Guide. Todd LammleЧитать онлайн книгу.
for the latest information on the CCNA Exam 200-125.
Table I.11 15 % 1.0 Network Fundamentals
Table I.12 21 % 2.0 LAN Switching Technologies
Table I.13 23 % 3.0 Routing Technologies
Table I.14 10 % 4.0 WAN Technologies
Table I.15 10 % 5.0 Infrastructure Services
Table I.16 11 % 6.0 Infrastructure Security
Table I.17 10 % 7.0 Infrastructure Management
Assessment Test
1. What is the sys-id-ext field in a BPDU used for?
A. It is a 4-bit field inserted into an Ethernet frame to define trunking information between switches.
B. It is a 12-bit field inserted into an Ethernet frame to define VLANs in an STP instance.
C. It is a 4-bit field inserted into an non-Ethernet frame to define EtherChannel options.
D. It is a 12-bit field inserted into an Ethernet frame to define STP root bridges.
2. You have four RSTP PVST+ links between switches and want to aggregate the bandwidth. What solution will you use?
A. EtherChannel
B. PortFast
C. BPDU Channel
D. VLANs
E. EtherBundle
3. What configuration parameters must be configured the same between switches for LACP to form a channel? (Choose three.)
A. Virtual MAC address
B. Port speeds
C. Duplex
D. PortFast enabled
E. Allowed VLAN information
4. You reload a router with a configuration register setting of 0x2101. What will the router do when it reloads?
A. The router enters setup mode.
B. The router enters ROM monitor mode.
C. The router boots the mini-IOS in ROM.
D. The router expands the first IOS in flash memory into RAM.
5. Which of the following commands provides the product ID and serial number of a router?
A. show license
B. show license feature
C. show version
D. show license udi
6. Which command allows you to view the technology options and licenses that are supported on your router along with several status variables?
A. show license
B. show license feature
C. show license udi
D. show version
7. Which of the following services provide the operating system and the network?
A. IaaS
B. PaaS
C. SaaS
D. none of the above
8. You want to send a console message to a syslog server, but you only want to send status messages of 3 and lower. Which of the following commands will you use?
A. logging trap emergencies
B. logging trap errors
C. logging trap debugging
D. logging trap notifications
E. logging trap critical
F. logging trap warnings
G. logging trap alerts
9. When stacking switches, which is true? (Choose 2)
A. The stack is managed as multiple objects, and has a single management IP address
B. The stack is managed as a single object, and has a single management IP address
C. The master switch is chosen when you configure the first switches master algorithm to on
D. The master switch is elected form one of the stack member switches
10. You need to connect to a remote IPv6 server in your virtual server farm. You can connect to the IPv4 servers, but not the critical IPv6 server you desperately need. Based on the following output, what could your problem be?
A. The global address is in the wrong subnet.
B. The IPv6 default gateway has not been configured or received from the router.
C. The link-local address has not been resolved so the host cannot communicate to the router.
D. There are two IPv6 global addresses configured. One must be removed from the configuration.
11. What command is used to view the IPv6-to-MAC-address resolution table on a Cisco router?
A. show ip arp
B. show ipv6 arp
C. show ip neighbors
D. show ipv6 neighbors
E. show arp
12. An IPv6 ARP entry is listed as with a status of REACH. What can you conclude about the IPv6-to-MAC-address mapping?
A. The interface has communicated with the neighbor address and the mapping is current.
B. The interface has not communicated within the neighbor reachable time frame.
C. The ARP entry has timed out.
D. IPv6 can reach the neighbor address but the addresses has not yet been resolved.
13. Serial0/1 goes down. How will EIGRP send packets to the 10.1.1.0 network?
A. EIGRP will put the 10.1.1.0 network into active mode.
B. EIGRP will drop all packets destined for 10.1.1.0.
C. EIGRP will just keep sending packets out s0/0.
D. EIGRP will use s0/2 as the successor and keep routing to 10.1.1.0.
14. What command produced the following output?
A. show ip protocols
B. show ipv6 protocols
C. show ip eigrp neighbors
D. show ipv6 eigrp neighbors
E. show ip eigrp topology
F. show ipv6 eigrp topology
15. You need to troubleshoot an adjacency between two EIGRP configured routers? What should you look for? (Choose four.)
A. Verify the AS numbers.
B. Verify that you have the proper interfaces enabled for EIGRP.
C. Make sure there are no mismatched K-values.
D. Check your passive interface settings.
E.