2024-07-12
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1. Which of the following descriptions of the technical features of routers is correct?
Throughput refers to the capacity of the router's routing table.
Backplane capacity determines the throughput of the router
Voice and video services have low requirements for delay and jitter
The burst handling capability is measured by the minimum frame interval value.
2. Which of the following descriptions of the technical characteristics of routers is correct?
The port throughput of a router is determined by the number of ports.
The total throughput of a router is determined by the capacity of the router's routing table.
Voice and video services have high requirements for delay and jitter
The burst handling capability is measured by the minimum frame interval value.
3. The correct description of the following technical characteristics of routers is ().
High-performance routers generally use a shared backplane structure
The service quality of a router is mainly reflected in the packet forwarding efficiency.
Packet loss rate is one of the indicators to measure the router's overload capacity.
The packet forwarding capability of a router is related to the number of ports, port type, packet length, and packet type.
4. Which of the following descriptions of router technical indicators is correct?
High-performance routers generally use a shared backplane structure
The port throughput of a router is determined by the number of ports.
Packet loss rate is one of the indicators to measure the router's overload capacity.
The packet forwarding capability of a router is related to the number of ports, port type, packet length, and packet type.
5. The correct description of the following router technical indicators is ().
The total throughput of a router is determined by the capacity of its routing table.
The router's queue management mechanism refers to the router's queue scheduling algorithm and congestion management mechanism.
The port throughput of a router is determined by the number of ports.
The burst handling capability is measured by the minimum frame interval value.
6. The correct description of the following router technical indicators is ().
The packet forwarding capability of a router is related to the number of ports, CPU type, packet length, and packet type.
The service quality of a router is mainly reflected in the packet forwarding efficiency.
High-performance routers generally use a shared backplane structure
Packet loss rate is one of the performance indicators to measure the router when it is overloaded.
7. The correct description of router technical indicators is ().
Packet loss rate is usually a measure of the performance of a router when it is overloaded.
Throughput determines the backplane capacity of the router
Voice and video services do not have high requirements for delay jitter
The burst handling capability is measured by the minimum frame interval value.
8. The correct description of router technical indicators is ().
Backplane capacity determines the throughput of the router
Voice and video services have low requirements for delay and jitter
The quality of service is mainly reflected in the queue management mechanism, port hardware queue management and device redundancy.
The burst handling capability is measured by the minimum frame interval value.
9. The correct description of router technical indicators is ().
Voice and video services have low requirements for delay and jitter
Backplane capacity determines the throughput of the router
Throughput refers to the capacity of the router's routing table.
The burst handling capability is measured by the minimum frame interval value.
10. The correct description of the following router technical indicators is ().
Packet loss rate is one of the performance indicators to measure the router when it is overloaded.
The burst handling capability of a router is measured by the rate at which packets can be sent without causing loss at the maximum frame interval.
High-performance routers generally use a shared backplane structure
The packet forwarding capability of a router is related to the number of ports, port type, packet length, and number of packets.
11. The correct description of the following router technical indicators is ().
High-performance routers generally use a shared backplane structure
The service quality of a router is mainly reflected in the packet forwarding efficiency.
Packet loss rate is one of the indicators to measure the router's overload capacity.
The packet forwarding capability of a router is related to the number of ports, port type, packet length, and packet type.
12. The correct description of the following router technical indicators is ().
High-performance routers generally use a shared backplane structure
Routing table capacity is one of the indicators to measure the router's overload capacity.
The packet forwarding capability of a router is related to the number of ports, port type, packet length, and packet type.
The router's queue management mechanism refers to the router's queue scheduling algorithm and congestion management mechanism.
13. The correct description of the following router technical indicators is ().
The number of ports determines the throughput of the router.
Throughput refers to the capacity of the router's routing table.
Voice and video services have high requirements for delay and jitter
The burst handling capability is measured by the minimum frame interval value.
14. The following description of router technical indicators is incorrect ().
Throughput refers to the packet forwarding capability of the router.
Backplane capacity determines the throughput of the router
Voice and video services have high requirements for delay and jitter
The burst handling capability is measured by the minimum frame interval value.
15. The following description of router technical indicators is incorrect ().
Throughput refers to the packet forwarding capability of the router.
The number of ports determines the throughput of the router.
Voice and video services have high requirements for delay and jitter
The router determines the packet forwarding path through the routing table
16. The following description of router technical indicators is incorrect ().
The packet forwarding capability of a router is related to the number of ports, port rate, packet length, and packet type.
High-performance routers generally use a shared backplane structure
Packet loss rate is one of the indicators to measure the router's overload capacity.
The router's service quality is mainly reflected in the queue management mechanism and the type of QoS protocol supported.
17. The following description of router technical indicators is incorrect ().
Throughput refers to the packet forwarding capacity of the router.
Backplane capacity determines the throughput of the router
Voice and video services have high requirements for delay and jitter
The burst handling capability is measured by the minimum frame interval value.
18. The following description of router technical indicators is incorrect ().
The packet forwarding capability of a router is related to the number of ports, port rate, packet length, and packet type.
Packet loss rate is one of the indicators to measure the router's overload capacity.
The service quality of a router is mainly reflected in the packet forwarding efficiency.
High-performance routers generally use a switching structure
19. The following description of router technical indicators is incorrect ().
Throughput refers to the packet forwarding capability of the router.
Backplane capacity determines the throughput of the router
Voice and video services have high requirements for delay and jitter
The burst handling capability is measured by the minimum frame interval value.
20. Among the following descriptions of router technical indicators, the wrong one is ().
High-performance routers generally use a shared backplane structure
Packet loss rate is one of the indicators to measure the router's overload capacity.
The router's service quality is mainly reflected in the queue management mechanism and the type of QoS protocol supported.
The packet forwarding capability of a router is related to the number of ports, port rate, packet length, and packet type.
21. Which of the following descriptions about server technology is correct?
Server disk performance is reflected in disk storage capacity and I/O speed
When a host fails in a cluster system, the system performance will not be affected.
The server operating system using RISC structure processor usually uses Android system
The hot-swap function allows users to replace hard disks, main backplanes, etc. without cutting off the power supply.
22. Which of the following descriptions about server technology is correct?
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, the system cannot provide normal services.
The operating system of servers using RISC structure processors usually uses Android
The hot-swap function allows users to replace the motherboard, hard disk, power supply, etc. without cutting off the power supply.
23. The following description about server technology is incorrect ().
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, the normal service of the system will not be affected.
The hot-swap function allows users to replace hard disks, boards, etc. without cutting off the power supply.
The overall performance of a server using symmetric multiprocessing (SIM) technology depends on the number of CPUs.
24.The following description about server technology is incorrect ().
The hot-swap function allows users to replace hard disks, boards, etc. without cutting off the power supply.
When a host in a cluster system fails, the normal service of the system will not be affected.
The availability of the server is described by MTBF
Server disk performance is reflected in disk storage capacity and I/O speed
25. The following description about server technology is incorrect ().
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, the normal service of the system will not be affected.
The operating system of servers using RISC structure processors usually uses Android
The hot-swap function allows users to replace hard disks, power supplies, etc. without cutting off the power supply.
26. The following description about server technology is incorrect ().
Symmetric multi-processing technology can balance the load in servers with multiple CPU structures
When a host in a cluster system fails, the normal service of the system will not be affected.
Servers using RISC processors usually do not use Windows operating systems.
Using RAID technology can improve disk fault tolerance
27.The following description about server technology is incorrect ().
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, it will affect the normal service of the system.
The operating system of servers using RISC structure processors usually uses UNIX
The hot-swap function allows users to replace hard disks, boards, etc. without cutting off the power supply.
28.The following description about server technology is incorrect ().
When a host in a cluster system fails, the system can provide normal services
In order to improve the performance of network servers, SMP, Cluster, PoE and other technologies can be used in server design.
The operating system of servers using RISC processors is usually Unix.
The hot-swap function allows users to replace hard disks, boards, etc. without cutting off the power supply.
29.The following description about server technology is incorrect ().
When a host fails in a cluster system, the performance of the system will not be affected.
Servers using RISC processors usually use the UNIX system
The hot-swap function allows users to replace hard disks, power supplies, etc. without cutting off the power supply.
Distributed Memory Access (NUMA) technology combines symmetric multiprocessor (SMP) and cluster technology
30. Which of the following descriptions about server technology is incorrect?
Server disk performance is reflected in disk storage capacity and IO speed
When a host in a cluster system fails, the normal service of the system will not be affected.
The operating system of servers using RISC processors usually uses Windows
The hot-swap function allows users to replace hard disks, power supplies, etc. without cutting off the power supply.
31. The following description about server technology is incorrect ().
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, the normal service of the system will not be affected.
Servers using RISC processors usually use the UNIX operating system.
The hot-swap function allows users to replace hard disks, main backplanes, etc. without cutting off the power supply.
32.The following description about server technology is incorrect ().
Server disk performance is determined by disk storage capacity and IO speed
When a host fails in a cluster system, the performance of the system will not be affected.
When the server uses a RISC structure processor, the operating system usually uses UNIX
The hot-swap function allows users to replace hard disks, memory, etc. without cutting off the power supply.
33. The following description about server technology is incorrect ().
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, the normal service of the system will not be affected.
The UNIX operating system is usually used on servers using RISC processors.
The hot-swap function allows users to replace hard disks, main backplanes, etc. without cutting off the power supply.
34.The following description about server technology is incorrect ().
Server disk performance is reflected in disk storage capacity and I/O speed
When a host in a cluster system fails, the system can provide normal services
Servers using RISC processors usually use Android as their operating system.
The hot-swap function allows users to replace hard disks, power supplies, etc. without cutting off the power supply.
35. The figure below shows two schemes for the core layer design of a large enterprise network. The wrong description of the technical features of the two schemes is ().
Both solutions adopt the link redundancy method
Solution (a) is more expensive than solution (b)
Solution (a) is less reliable than solution (b)
Solution (b) is more likely to form a bandwidth bottleneck than solution (a)
36. The following figure shows two schemes for the core layer design of a large enterprise network. The wrong description of the technical features of the two schemes is ().
The two core routers are connected by redundant optical fiber links.
The core layer currently mainly uses GE/10GE network technology
Solution (b) The core router has greater traffic pressure
Solution (b) is prone to single point failure
37. The following description of the reliability and availability indicators of high-end routers is incorrect ().
Trouble-free continuous working time is more than 100,000 hours
System failure recovery time is less than 60 minutes
The system main-standby switching time is less than 50 ms
The automatic protection switching time of SDH interface is less than 50 ms
38. The following description about the reliability and availability indicators of high-end routers is incorrect ().
Trouble-free continuous working time is more than 100,000 hours
System failure recovery time is less than 30 minutes
The system has automatic protection switching function, and the main and standby switching time is less than 50 milliseconds
SDHThe ATM interface has an automatic protection switching function with a switching time of less than 100 milliseconds
39. The following description of the reliability and availability indicators of typical high-end routers is incorrect ().
Trouble-free continuous working time is more than 10,000 hours
System failure recovery time is less than 30 minutes
The switching time between the main and backup systems is less than 50 milliseconds
The automatic protection switching time of SDH interface is less than 50 milliseconds
40. In the detailed analysis of network requirements, in addition to the overall network requirements analysis, integrated wiring requirements analysis, network availability and reliability analysis, and network security requirements analysis, the work that needs to be done is ().
Network Engineering Cost Estimation
Network Engineering Schedule
Network hardware equipment selection
Analysis of network bandwidth access requirements
41. The function that allows users to replace faulty hard disk, power supply, motherboard and other components without cutting off the power supply is ().
Hot Swap
Cluster
virtual machine
RAID
42. In the hierarchical design of network systems, the ratio of the upstream bandwidth to the next level bandwidth between layers is generally controlled at ().
1:1
1:10
1:20
1:40
43. The following description about B/S mode application server is wrong ().
Network applications are built on the basis of Web services
Accessing different application servers requires different client programs
The browser cannot directly access the database server
Adopting three-tier architecture
44.The following is not a router performance indicator ().
Throughput
Packet loss rate
Delay and Delay Jitter
Maximum number of stacks
45. When a host in a server group fails, the programs running on the host will be immediately transferred to other hosts in the group. The following technologies can achieve the above requirements ().
RAID
Cluster
RISC
CISC
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