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Question No : 1
Which of the following links can run the PPP protocol but not the HDLC protocol? (Multiple choice)
Question No : 2
Understand the industry background of the project, which of the following is available?
A. Industry conventional solutions
B. Project need solve the problem
C. Customer's organizational structure
D. Scope of the project
Question No : 3
In the network design, you can select a redundant network topology to provide high reliability for customer services, which of the following topologies can provide redundancy? (Multiple choice)
A. Star topology
B. Ring topology
C. Bus topology
D. Double star topology
Question No : 4
What circumstances is "Loop" test generally used in ?
A. Test whether the application can be properly connected.
B. Test whether the routing protocol can effectively avoid loops.
C. Test whether the switch can effectively perform loop containment and broadcast containment.
D. Test whether the physical line is interrupted.
Question No : 5
The purpose of the cutover start-up coordination meeting is to communicate the project with the customer, and communicate with other project participants is not very important.
Question No : 6
Which of the following statements is incorrect about the OSPF neighbor relationship failure description?
A. Stranded on ExStart state indicates that the MTU mismatch or OSPF RID (Router ID) repeat between neighbor routers.
B. For non DR/BDR routers on the Ethernet link. Stranded on 2-Way state is acceptable.
C. Stranded on Init state indicates that the router has received the Hello packet from the neighbor, but the Hello message does not contain the receiving router OSPF RID (Router ID).
D. Stranded on Attempt state indicates that the router does not send unicast Hello packets to the configured neighbors.
Question No : 7
Enterprise network often use DHCP to assign IP addresses to users. Compared with static address allocation, DHCP address allocation greatly reduces the workload of managing network addresses.
Question No : 8
High-risk operation scheme is generally OK of the day before the final review of the implementation of it.
Question No : 9
Ethernet is a network supporting broadcast, this simple broadcast mechanism will lead to disastrous consequences once there is a loop in the network.
Which of the following phenomena may be caused by a loop? (Multiple choice)
A. The device can't remote login.
B. When using the display interface command on the device to check the statistical information of the interface found the interface received a large number of broadcast packets.
C. CPU occupancy rate is more than 70%.
D. Through the ping command to test the network, packet loss serious.
Question No : 10
In the examination of the equipment operation, Which of the following is correct?
A. Through executing the display memory-usage command to check the memory usage rate of the device. If the "Memory Using Percentage Is" value exceeds 80%, you need to pay special attention.
B. Through executing the display device command to check the running status of the board. The board¡°Online¡±should be¡°Present¡±.
C. Through executing the display fan command to view the status of the fan. When Present option is NO, it is normal.
D. Through executing the display ftp-serve command to view the FTP network service port. The unused FTP network service port needs to be recorded.
Question No : 11
Which of the following causes IS-IS neighbor relationship failure? (Multiple choice)
A. The system ID of the device at both ends of the link are the same.
B. The IS-IS levels at both ends of the link do not match.
C. When establishing IS-IS Level-1 neighbors, the regional addresses of the devices at both ends of the link do not match.
D. IP addresses of the interfaces at both ends of the link are not on the same network segment.
Question No : 12
Monday morning, you receive a call in the office seat and an employee said he could not access the Internet through the PC and need your technical support. So you use the ping command on his PC to test and at the same time use the tracert command to see where the packet loss occurs.
Which of the following is a network troubleshooting method?
A. Contrast configuration.
B. From bottom-up path.
C. Confirm the traffic flow path.
D. From top-down method.
Question No : 13
When there is a relay device between the DHCP client and the DHCP server, if the IP address in the global address pool of the DHCP server is not in the same network segment as the IP address of the VLANIF interface connected to the client on the relay device, will cause the DHCP failure.
Question No : 14
DHCP snooping as an effective security mechanism, which of the following attacks can be prevented? (Multiple choice)
A. Prevent DHCP counterfeiters attack.
B. Prevent a DOS attack on the DHCP server.
C. Prevent MAC address flooding attack.
D. Combining DAI function to check the source MAC address of the packet.
E. Combining IPSG function to check the source IP address of the packet.
Question No : 15
Which of the following device is based on the MAC address of the data frame for data forwarding?
C. The router
Question No : 16
Two-layer network architecture compared with the three-layer network architecture, it has the advantages of simple structure and high efficiency of data forwarding. Therefore, the future network structure will be fully transferred to the two-layer network structure, three-layer network architecture will gradually be eliminated.
Question No : 17
What event marked the end of the network planning phase?
A. Project approval
C. Contract signing
D. initial inspection of the project
Question No : 18
Which of the following is the key to network design?
A. Key technological innovation
B. Choice of device line and other elements
C. Improve performance at a reasonable cost
D. Ensure the network is stable and reliable
Question No : 19
The difficulty of cutover mainly are? (Multiple choice)
A. Minimize the scope of the business affecting.
B. Do the best of risk aversion
C. Develop a complete cutover plan.
D. smooth implementation of cutover
Question No : 20
Which kind of the aspects do the cutover difficulties mainly have? (Multiple choice)
A. Minimize the scope of the business affecting.
B. Do the best on rish aversion
C. Develop a complete cutover plan.
D. perform the cutover smoothly
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