CCNA题库加强题.doc

11. What are two benefits of using VTP in a switching environment? (Choose two.)
A. It allows switches to read frame tags.
B. It allows ports to be assigned to VLANs automatically.
C. It maintains VLAN consistency across a work.
D. It allows frames from multiple VLANs to use a single interface.
E. It allows VLAN information to be automatically propagated throughout the switching environment.
Answer: CE
18. work administrator changes the configuration register to 0x2142 and reboots the router. What are two results of making this change? (Choose two.)
A. The IOS image will be ignored.
B. The router will prompt to enter initial configuration mode.
C. The router will boot to ROM.
D. Any configuration entries in NVRAM will be ignored.
E. The configuration in flash memory will be booted.
Answer: BD
28. What are two characteristics of ? (Choose two.)
A. It sends data in clear text format.
B. It is no longer supported on work devices.
C. It is more secure than SSH.
D. It requires an enterprise license in order to be implemented.
E. It requires that the destination device be configured to support connections.
Answer: AE
33. Which two devices can interfere with the operation of a work because they operate on similar frequencies? (Choose two.)
A. copier
oven
C. toaster
phone
E. IP phone
F. AM radio
Answer: BD
36. Which two of these statements are true of IPv6 address representation? (Choose two.)
A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
B. A single interface may be assigned multiple IPv6 addresses of any type.
C. Every IPv6 interface contains at least one loopback address.
D. The first 64 bits represent the dynamically created interface ID.
E. Leading zeros
Answer: BC
39. Which two of these statements regarding RSTP are correct? (Choose two.)
A. RSTP cannot operate with PVST+.
B. RSTP defines new port roles.
C. RSTP defines no new port states.
D. RSTP is a proprietary