Common methods for configuring switches are (ACDE)

A.？ Console line command line mode B. Console line menu mode? c？ A standard protocol for remote connection service or software (which can be a verb) that implements this protocol.

D.？ Auxiliary mode remote dialing into E. Web mode

Note: Routers can be configured by console line, command line, telnet, AUX remote assistance and WEB, but the configuration function of WEB is less, which consumes resources. The console line menu mode configuration has never been heard of.

2. What method does the switch use to save the currently running configuration parameters? (ABC)

A. write? B? Copy and run star C. writememory? d？ Copy vlan flash memory

Description: Write memory is Cisco IOS? Commands before 13.0 are now written in copy running-config? Replaced the startup-config command, which is used to copy the running configuration file into the startup configuration file. When the Cisco switch is started, the file startup-config previously configured and saved in NVRAM is copied into the memory of the switch and named? Run -config and then run.

3. To view the switch configuration information stored in the flash memory, you should use the command (b).

A. show the running configuration? B. Display startup configuration

C, displaying the configuration D, displaying the configuration text

Note: the startup-config in nvram is a backup copy of config.text in flash, and the show start is show flash:config.text There is no show config.text command, so students with real machines can test it themselves.

4. The management VLAN number of S2126G switch is (B).

A.0 B. 1？ C. 256？ D. 1024

Note: S2 126G is a product of Ruijie Company, and I don't know about this product. The default VLAN of a general switch is 1, which is also a management VLAN and an inherent VLAN. Of course, I'm just speculating, and it's also possible that individual companies have special products, so don't blame the mistakes.

5. If there is nothing wrong with the device physically, but the switch can't log in normally through the console port, the possible reason is (b).

A. HyperTerminal port rate is set to 9600? HyperTerminal port rate 57600

C. the line sequence of the configuration cable is 568b-568b D, which is not connected to the COM port correctly.

Explanation: Since there is nothing wrong with the physical equipment, it is a software problem. Usually, the default device speed is 9600. When connecting, the switch speed should be consistent with the terminal connection speed, and choose B.

6. The advantage of defining VLAN in VLAN is (AC).

A. broadcast control? B. Network monitoring C. Security D. Traffic management

Description: This is the basic knowledge in CCNA. VLAN can restrict broadcasting, and VLANs of different logical groups cannot communicate directly, which plays a security role.

7. Regarding VLAN, the following statement is true (AB).

A. isolate the broadcast domain? B. the communication between them goes through three layers of equipment.

C. Can you restrict the computer's access to the Internet? D Logical grouping can only be performed by hosts on the same switch.

Note: This is also the basic knowledge in CCNA. VLAN can restrict broadcasting and security. VLAN internal communication does not need three-layer devices, and VLAN internal communication does not need three-layer devices. VLAN can be logically divided not only on the same switch, but also on different switches. This division is called end-to-end VLAN. Question B doesn't know whether it is communication within VLAN or between VLANs, so let's take it as communication between VLANs.

8. If you just took over the company's network management work recently, and you find that the IP address of VLAN 10 is configured on S2 126G switch when you look at the previous configuration of the equipment, then the function of this address is (b).

A.VLAN 10 can communicate with other hosts.

B. Used as management IP address

C each VLAN created on the switch must be configured with an IP address.

D. Actually, this address is useless and can be deleted.

Note: At first, the switch was a layer 2 device, and the layer 2 device could not set and use IP by default. Later, it gradually developed into a layer 3 switch, similar to routing. The Layer 3 switch has several interfaces and commonly used SVI, so it has an IP for remote TLENT/SSH management.

9. The common spanning tree protocols are (ABCD).

A.STP？ RSTP? MSTP·PVST

Note: The above four are all spanning tree protocols, STP is the original single spanning tree (IEEE802. 1D general standard), and RSTP is a fast spanning tree based on STP, which is also a single spanning tree (IEEE802. 1W general standard). MSTP is really used in enterprise networks, which is the spanning tree of VLAN instance mapping, IEEE 802.1s. PVST is a private spanning tree of Cisco and can only be used by Cisco devices. It is not a universal standard, and was later improved by PVST+ and PVRST.

10.IEEE802. 1d defines the spanning tree protocol and defines the whole network as (b).

A. binary tree structure? B. Loop-free tree structure

C. a cyclic tree structure? D. ring structure

Description: Spanning tree can ensure that the network is loop-free, because it is a tree structure, and there is only one path from any node to the designated destination.

The fundamental purpose of 1 1. STP is (c).

A. Prevent "broadcast storm" B. Prevent information loss

C. prevent the information loop in the network from causing network paralysis; D. make the bridge have network layer function.

Description: The purpose of spanning tree is to prevent network loop and further prevent network storm. Network storm is not a broadcast storm, and STP cannot prevent it. In order to prevent broadcast storm, VLAN technology and three-layer equipment should be used.

Bao Xiao answers for you. Are you satisfied?