NO.16 R1 has the following configurations:
[R1] nat address-group test 1
[R1-address-group-test] section 1 100.1.23.1 100.1.23.254
[R1-address-group-test] mode pat
[R1-address-group-test] quit
[R1] nat-policy
[R1-policy-nat] rule name test
[R1-policy-nat-rule-test] source-address range 192.168.0.0
192.168.255.255
[R1-policy-nat-rule-test] action source-nat address-group test
[R1-policy-nat-rule-test] quit
[R1-policy-nat] quit
[R1] interface GE 0/0/2
[R1-GE0/0/2] nat enable
[R1-GE0/0/2] quit
Which of the following statements is false?

NO.17 What is the broadcast address of the network that contains a host with IP address 192.168.1.147/28?

NO.18 Both SNMP Trap and Inform Request are used by managed devices to send alarms to the NMS.
Inform Request requires an acknowledgment from the NMS, whereas Trap does not.

NO.19 Which of the following port states are included in Rapid Spanning Tree Protocol (RSTP)?

NO.20 PC1 and PC2 are connected to the same switch, but they cannot learn each other’s ARP information. This may be caused by incorrect VLAN configuration on the switch.

NO.21 In the figure, a TCP connection has been established between PC1 and PC2. After PC1 sends a data segment to PC2, which of the following is the acknowledgment number in the packet returned by PC2?

NO.22 Which of the following IP addresses cannot be configured for a host by default?

NO.23 The following command output is displayed on R1:
[R1] display aaa configuration
Domain Name Delimiter : @
Domainname parse direction : Left to right
Domainname location : After-delimiter
Administrator user default domain : default_admin
Normal user default domain : default
Domain : total: 256 used: 3
Authentication-scheme : total: 32 used: 2
Accounting-scheme : total: 32 used: 1
Authorization-scheme : total: 32 used: 2
Service-scheme : total: 256 used: 0
Recording-scheme : total: 32 used: 0
Local-user : total: 512 used: 2
Remote-admin-user block retry-interval : 5 Min(s)
Remote-admin-user block retry-time : 3
Remote-admin-user block time : 5 Min(s)
Session timeout invalid enable : No
Which of the following statements is false?

NO.24 What is the main function of the DNS protocol?

NO.25 On a Layer 2 WLAN, STAs use an AC as their gateway.

NO.26 Which of the following is correct regarding the configuration of the trunk port and access port on a switch?

NO.27 Which of the following is the default value of the Router Dead Interval field in OSPF Hello packets on a broadcast network?

NO.28 Which of the following configurations can enable connectivity between interfaces on R1 and R3?
(Select all that apply)

NO.29 After the root bridge is elected on an STP network, which of the following parameters may be compared by ports on non-root bridge nodes to elect the root port? (Select all that apply)

NO.30 In the figure, a web client sends an HTTP request to a web server, and the router in between performs operations on the HTTP request. Which of the following statements are false about the router’s operations? (Select all that apply)

NO.31 On the OSPF network shown in the figure, all IP addresses can communicate with each other. Then the following configurations are added on R1:
[R1] acl 3000
[R1-acl4-advance-3000] rule deny ip source 10.0.1.1 0.0.0.0
[R1-acl4-advance-3000] rule deny ip source 10.1.1.1 0.0.0.0
[R1-acl4-advance-3000] rule permit ip source 10.3.1.1 0.0.0.0
[R1-acl4-advance-3000] rule permit ip
[R1-acl4-advance-3000] quit
[R1] traffic classifier test
[R1-classifier-test] if-match acl 3000
[R1-classifier-test] quit
[R1] traffic behavior test
[R1-behavior-test] permit
[R1-behavior-test] quit
[R1] traffic policy test
[R1-trafficpolicy-test] classifier test behavior test
[R1-trafficpolicy-test] quit
[R1] interface GE 0/0/1
[R1-GE0/0/1] traffic-policy test outbound
[R1-GE0/0/1] quit

Which IP addresses of S1 can successfully ping 10.0.23.3? (Select all that apply)

NO.32 Refer to the graphic, 00e0-fc99-9999 is a specific host MAC address learned by a switch through ARP, and the host changes the IP address three times.