多項(xiàng)選擇題Which two benefits are provided by using a hierarchical addressing network addressing scheme?（）

A. reduces routing table entries
B. auto-negotiation of media rates
C. efficient utilization of MAC addresses
D. dedicated communications between devices
E. ease of management and trouble shooting


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1.多項(xiàng)選擇題Which two tasks does the Dynamic Host Configuration Protocol perform?（）

A. Set the IP gateway to be used by the network.
B. Perform host discovery used DHCPDISCOVER message.
C. Configure IP address parameters from DHCP server to a host.
D. Provide an easy management of layer 3 devices.
E. Monitor IP performance using the DHCP server.
F. Assign and renew IP address from the default pool.

2.多項(xiàng)選擇題Which three statements are typical characteristics of VLAN arrangements?（）

A. A new switch has no VLANs configured.
B. Connectivity between VLANs requires a Layer 3 device.
C. VLANs typically decrease the number of collision domains.
D. Each VLAN uses a separate address space.
E. A switch maintains a separate bridging table for each VLAN.
F. VLANs cannot span multiple switches.

3.多項(xiàng)選擇題A network administrator changes the configuration register to 0x2142 and reboots the router. What are two results of making this change?（）

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.

4.多項(xiàng)選擇題Which two values are used by Spanning Tree Protocol to elect a root bridge?（）

A. amount of RAM
B. bridge priority
C. IOS version
D. IP address
E. MAC address
F. speed of the links

5.多項(xiàng)選擇題What are two advantages of Layer 2 Ethernet switches over hubs?（）

A. decreasing the number of collision domains
B. filtering frames based on MAC addresses
C. allowing simultaneous frame transmissions
D. increasing the size of broadcast domains
E. increasing the maximum length of UTP cabling between devices