HCDP英文版最新单选试题Word格式.docx

1、4. which of the following character strings matches the regular expression 100$?A 3100B 100C 1008D 100 200B5. _ _ _ _ IN IPv4,which of the following is the SSM address range allocated by the IANA?A 232.0.0.0/24B 225.0.0.0/8C 232.0.0.0/8D 239.0.0.0/86. which of the following technologies can reduce t

2、he scale of broadcast domain?A VLANB TRUNKC RARPD STP7. Which statement about the trunk interface is true?A A trunk interface is always connected to hosts.B Multiple VLAN IDs can be set on a trunk interface.The VLAN IDs can be the same as or different from the PVID.C The trunk interface cannot have

3、a PVID.D IF the trunk interface receives a packet with a VLAN not in the allowed VLAN list, the trunk interface broadcast the packet in the VLAN.8. What is the legal virtual MAC address in VRRP?A 01-01-5E-00-01-01B 01-00-5E-00-01-00C 00-00-5E-00-01-01D 01-01-5E-00-01-019. Which of the following stat

4、ements are correct regarding priority in VRRP?A The ip address owner always uses 255 as its priority regardless its config priority.B The ip address owner always uses 0 as its priority regardless its config priority.C We can configure the priority as 0 to make the router never attend the Master elec

5、tion.D If a VRRP router changes from Master to Slave,it will send out a VRRP message with priority 0 in the network.10. Which of the following statements are correct regarding VRRP?A Only Master can process the data packets sending to virtual router.B Only Slave can process the data packets sending

6、to virtual router.C Both Master and Slave can process the data packets sending to the same virtual router to realize load balance.D By default,only Master can process the data packets sending to virtual router:but we can do some configuration to make the Slave Process the data packets sending to vir

7、tual router.11. Which of the following statements are correct regarding the function of VRRP?A VRRP can improve the reliability of default gateway.B VRRP increase the convergence speed of routing protocol.C VRRP is mainly used for traffic balance.D VRRP can provide one default gateway for diffenrent

8、 network segments,it simplifies the gateway configuration for PC.12. Which of the following statements are correct regarding default gateway of PC in the network running VRRP?A Configure only one gateway for the PC which is the IP address of Master.B Configure only one gateway for the PC which is th

9、e IP address of virtual router.C Configure two gateways for the PC which are the IP addresses of Master and Slave.D Configure three gateways for the PC which are the IP addresses of Master,Slave and virtual router.13. RTA connected to a LAN by e0/0 whose IP address is 10.1.1.251 and network mask is

10、255.255.255.0 .Now create a virtual router with ID 1 and virtual IP address 10.1.1.254 on RTA.which of the following commands are correct?A RTA-ethernet0/0vrrp vrid 1 virtual-ip 10.1.1.254B RTAvrrp vrid 1 virtual-ip 10.1.1.254C RTA-ethernet0/0vrrp vrid 1 virtual-ip 10.1.1.254 mask 255.255.255.0D RTA

11、vrrp vrid 1 virtual-ip 10.1.1.254 mask 255.255.255.014. Which of the following statements rae correct regarding VRRP advertisement message?A VRRP has two kinds of advertisement message,one is sent by master,the other is sent by slave.B VRRP has two kinds of advertisement message which is sent by mas

12、terC VRRP has two kinds of advertisement message which is sent by slaveD VRRP has two kinds of advertisement message,one is used for master election,the other one is used in stable network after master election.15. which of the following firewalls is the most popular?A packet filtering firewallB Sta

13、teful firewallC proxy firewallD Anti-virus firewall16. How many user-defined security zones at most are configured on an Eudemon?A 3B 4C 5D 617. The TCP SYN flood attack usually occurs during the TCP handshake process. How many handshakes are required to set up a TCP connection?A 1B 2C 3D 418. How m

14、any default zones does the Eudemon supporting multi-instance have?A TwoB ThreeC FourD Five19. Which of the following is the priority value of the DMZ on the Eudemon?A 10B 50C 75D 8520. What is the maximum number of security zones supported by the Eudemon?A 256B 128C 32D 1621. Which of the following

15、indicators are performance indicators of the Eudemon?A Throughput of large-sized or small-sized packets.B Number of new connections and concurrent connections per secondC VPN performanceD MTU check22. In the scenario where packets are sent and received along different paths,which of the following fu

16、nctions needs to be disabled on the firewall?A Status detectionB Attack defenseC Packet filteringD Status backup23. Assume that the traceroute test is used to detect the packet forwarding path and tracert packets have passed through the firewall.which of the following attack protection functions nee

17、ds to be disabled to normally display the tracert result?A ICMP-redirectB ICMP-unreachable C TracertD Smurf24. What is the recommended minimum delay for HRP preemption on the Eudemon?A 120SB 60SC 10SD 5S25. Which of the following commands is used to display the detailed information about the Eudemon

18、?A display firewall statistic systemB display firewall session table raw both-directionC display firewall session table verboseD display firewall session table detail26. To provide services of different qualities,you can classify services based on such packet information as the packet priority, sour

19、ce IP address,destination IP address,and port number. Which of the following Qos technology can be used to service classification?A Traffic policingB Traffic shapingC Complex traffic classificationD Congestion management27. Qos in best-effort service mode uses which of the following queue scheduling

20、 technologyA FIFOB WFQC PQD RR28. Which of the following statement about Qos in diffserv mode is false?A The parameter field in the IP packet header informs devices on the network of the Qos requirements of the application.B Every device on the packet transmission paths can learn the service request

21、 types by analyzing the IP packet header.C Before sending Packets, the application program needs to confirm that the network has reserved resources for packet transmission.D DiffServ is a Qos solution based on packets.29. Which of the following statement about packet marking is false?A Compared with

22、 traffic policing, traffic shaping is advanced in terms of caching burst traffic.B with traffic shaping, packets can be transmitted at an even rate.C Caching packets in the queue increases the packet delay in case of congestion.D In case of congestion, traffic shaping causes the packet loss ratio to

23、 increase.30. Which of the following information in a packet can be marked or re-marked?A IP DSCP,IP precedence, and 802.1P informationB IP source and destination addressesC MAC addressD Any information in the packet31. Simple traffic classification can be performed based on which of the following i

24、nformation in vlan packets?A DSCP B IP precedenceC MPLX EXPD 802.1p32. Based on the DSCP field （first 6 bits of the Tos field）,pakcets can be classified into how many types?A 4 B 8 C 16D 6433. In addition to traffic rate limit, the CAR can mark packets with colors. If one token bucket one-rate is us

25、ed in traffic policing and the number of tokens is insufficient, packets are marked with which of the following color?A RedB GressC YellowD Blue34. In traffic policing using two token buckets two-rate,when the CIR is set to 1 Mbit/s and the PIR is set to 2 Mbit/s, what is the maximum transmission ra

26、te for the traffic in green?A 1 Mbit/sB 2 Mbit/sC 3 Mbit/sD 4 Mbit/s35. Assume that there are four flows a.b.c,and d,the transmission rate of each flow is 50 Mbit/s,and the total bandwidth of the interface for flow transmission is 100 Mbit/s,In the case of congestion,WFQ is available for flows a,b,c

27、,and d,with the weight proportion being 1:2:3:4,which of the following statement about the interface bandwidth allocated to each flow is true?A Interface bandwidths allocated to flows a,b,c and d are 10 Mbit/s,20 Mbit/s,30 Mbit/s, and 40 Mbit/s respectively.B Interface bandwidths allocated to flows

28、a,b,c and d are 50 Mbit/s, 50 Mbit/s, 0 Mbit/s, and 0 Mbit/s respectively.C Interface bandwidths allocated to flows a,b,c and d are 40 Mbit/s, 30 Mbit/s, 20 Mbit/s, and 10 Mbit/s respectively.D Flows a,b,c and d are discarded.36. Assume that congestion occurs on the outbound interface,packet A is ca

29、ched in the PQ,and packet B is cached in the WFQ,which of the following statement about packet scheduling is true?A Packet A is scheduled first.B Packet B is scheduled first.C Packets A and B are scheduled at the same time.D Packets A and B are discarded.37. Assume that the following WRED polcies are used in QoS : The length of the queue for saving DSCP packets with the priority being AF21 ranges