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NEW QUESTION 112
The following ACL is configured on the MSR router:
acl number 3999
rule permit tcp source 10.10.10.1 255.255.255.255 destination 20.20.20.1 0.0.0.0 time-range lucky
Then the correct understanding of the ACL is _______. (Multiple choice)
- A. This rule only matches packets destined for 20.20.20.1
- B. The rule can match TCP packets to any destination network segment
- C. This rule only matches data packets originating from 10.10.10.1
- D. The rule only takes effect during the lucky time period
- E. The rule can match TCP packets from any source network segment
Answer: A,D,E
NEW QUESTION 113
In a PPP connection, what is wrong about NCP is ______.
- A. NCP can be configured with different network layer protocols
- B. NCP is used to establish, tear down and monitor data links
- C. NCP is used to negotiate authentication method
- D. NCP is used to negotiate the format and type of data packets transmitted on the data link
Answer: B,C
NEW QUESTION 114
Data segmentation is done in ______ in the OSI reference model.
- A. Transport layer
- B. Network layer
- C. Access layer
- D. Physical layer
Answer: A
NEW QUESTION 115
The subnet mask of the IP address 132.119.100.200 is 255.255.255.240, so the IP subnet address where it is located is ______.
- A. 132.119.100.0
- B. 132.119.100.192
- C. 132.119.100.128
- D. 132.119.100.193
Answer: B
NEW QUESTION 116
The two WAN interfaces S1/0 and S1/1 of the router MSR-1 are connected to the routers MSR-2 and MSR-3 respectively. At the same time, the Ethernet port of MSR-1 is connected to MSR-4, and all four routers run RIP protocol. In the routing table of MSR-1, there is a route R from MSR-2 whose suppression time is activated, then ______. (Multiple choice)
- A. Before the suppression time ends, if MSR-1 receives the update of route R from MSR-3, and its Cost is less than 16, then MSR-1 will release the suppression of route R and update the routing table
- B. Before the suppression time ends, if MSR-1 receives the update of route R from MSR-2, and its Cost is less than 16, then MSR-1 will release the suppression of route R and update the routing table
- C. The cost value of route R in the routing table of MSR-1 and MSR-2 is set to 16
- D. After the suppression time expires, if MSR-1 receives the update of route R from MSR-4, then MSR-1 will update the information of route R in the routing table
Answer: B,C,D
NEW QUESTION 117
The equipment that should be used in the box in the figure is ______.
- A. CSU/DSU
- B. Router
- C. Modem
- D. WAN switch
Answer: B
NEW QUESTION 118
A network connection is like:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
Two of the MSR routers MSR-1 and MSR-2 are interconnected back-to-back through their S1/0 interfaces, and their GE0/0 interfaces are respectively connected to the client hosts HostA and HostB. By configuring the IP address and routing, HostA can communicate with HostB in the current network. The IP address of HostA is 192.168.0.2/24, and the default gateway is 192.168.0.1. The GE0/0 interface address of MSR-1 is 192.168.0.1/24.
The following configuration has been added to MSR-1:
firewall enable
firewall default permit
acl number 3003
rule 0 deny icmp source 192.168.0.2 0 icmp-type echo-reply
interface GigabitEthernet0/0
firewall packet-filter 3003 inbound
So ______ . (Multiple choice)
- A. HostA can be pinged on MSR-1
- B. The IP address of interface GE0/0 of MSR-1 cannot be pinged on HostA
- C. On HostA, you can ping the IP address of MSR-1 interface GE0/0
- D. Cannot ping HostA on MSR-1
Answer: C,D
NEW QUESTION 119
A network connection is like:
HostA----GE0/0--MSR-1--S1/0------S1/0--MSR-2--GE0/0----HostB
Among them, the two empty-configured MSR routers MSR-1 and MSR-2 are interconnected back-to-back through their S1/0 interfaces, and their GE0/0 interfaces are respectively connected to the client hosts HostA and HostB. All physical connections are normal.
Now add the following configuration under the S1/0 interface of MSR-2:
interface Serial1/0
link-protocol ppp
ppp pap local-user 123 password simple 456
ip address 6.6.6.1 255.255.255.0
So ______ . (Multiple choice)
- A. When performing PAP verification, MSR-2 will first send username 123 and password 456 to MSR-1
- B. When performing PAP verification, MSR-2 will first send the password 456 to MSR-1 in clear text
- C. Only need to configure PPP encapsulation and IP address 6.6.6.2/24 on the S1/0 interface of MSR-1 to communicate with each other
- D. If only PPP encapsulation and IP address 6.6.6.2/24 are configured on the S1/0 interface of MSR-1, it cannot communicate
Answer: A,C
NEW QUESTION 120
If the public network address of the NAT device is dynamically allocated by the operator through ADSL, in this case, you can use ______.
- A. Easy IP
- B. Static NAT
- C. Basic NAT
- D. NAPT using address pool
Answer: A
NEW QUESTION 121
UDP belongs to the ______ of the OSI reference model.
- A. Transport layer
- B. Network layer
- C. Presentation layer
- D. Session layer
Answer: A
NEW QUESTION 122
The two branches of XYZ company are interconnected by a synchronous dedicated line, and HDLC is used as the encapsulation protocol.
The correct statement about HDLC security is ______.
- A. HDLC is not as secure as PPP. It does not support PAP and CHAP authentication, but can only provide plaintext authentication.
- B. The security of HDLC is not as rich as that of PPP. HDLC can only use PAP authentication.
- C. HDLC does not support verification.
- D. The security of HDLC is not strong, and two authentication methods are provided, but the user name and password in the authentication are transmitted in clear text.
Answer: C
NEW QUESTION 123
The TFTP protocol is a protocol based on ______.
- A. SSH
- B. UDP
- C. IPX
- D. TCP
Answer: B
NEW QUESTION 124
If the broadcast flag in the DHCP Discovery message sent by the DHCP client to the DHCP relay is 0, the DHCP relay responds to the DHCP offer message of the DHCP client with ______.
- A. broadcast
- B. anycast
- C. unicast
- D. multicast
Answer: C
NEW QUESTION 125
I see the following information on a router MSR-1:
[MSR-1]display arp all
Type: S-Static D-Dynamic
IP Address MAC Address VLAN ID Interface Aging Type
168.0.2 0123-4321-1234 N/A GE0/0 20 D After checking that the host has a large number of viruses, now the customer wants to prohibit the message sent by the host from passing through MSR-1, then _______. (Multiple choice)
- A. Advanced ACL can be configured on the router and applied in the outbound direction of GE0/0.
- B. Basic ACL can be configured on the router and applied in the inbound direction of GE0/0.
- C. You can configure basic ACL on the router and apply it in the outbound direction of GE0/0.
- D. Advanced ACL can be configured on the router and applied in the inbound direction of GE0/0.
Answer: B,D
NEW QUESTION 126
In the process of establishing a PPP session, when authentication is set but the authentication fails, the PPP link enters the ______ phase.
- A. Terminate
- B. Authentication
- C. Network
- D. Establish
- E. Dead
Answer: A
NEW QUESTION 127
DNS works on the ______ of the OSI reference model.
- A. Transport layer
- B. Application layer
- C. Network layer
- D. Session layer
Answer: B
NEW QUESTION 128
If you want to set the frame relay LMI type to ANSI, you should ______.
- A. Use the command fr lmi class ansi in system mode
- B. Use the command fr lmi class ansi in interface mode
- C. Use the command fr lmi type ansi in system mode
- D. Use the command fr lmi type ansi in interface mode
Answer: D
NEW QUESTION 129
The 802.11b protocol defines 14 channels in the 2.4GHz frequency band, and there is overlap in the frequency spectrum between adjacent channels.
In order to maximize the use of frequency band resources, which set of channels can be used for wireless coverage?
- A. 1, 5, 9
- B. 2, 6, 10
- C. 3, 6, 9
- D. 1, 6, 11
Answer: D
NEW QUESTION 130
Which of the following statements about HDLC is correct is ______. (Multiple choice)
- A. HDLC can only run on asynchronous links.
- B. The HDLC protocol adopts a unified frame format, so both data messages and protocol messages are transmitted in standard format frames on the HDLC link.
- C. HDLC can support IP address negotiation.
- D. The HDLC protocol is a bit-oriented data link layer protocol.
Answer: B,D
NEW QUESTION 131
It is required to set a subnet mask to divide a Class B network 172.16.0.0 into 30 subnets, and each subnet should contain as many hosts as possible, so the subnet mask should be _____. (Dotted decimal format) slightly
Answer:
Explanation:
255.255.248.0
NEW QUESTION 132
An enterprise network administrator needs to set a subnet mask to divide the Class C network 211.110.10.0 that he is responsible for into at least 10 subnets. How many subnet masks can be used for division? (multiple choice)
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C,E
NEW QUESTION 133
The IP address 112.1.1.1 corresponds to the network address of the natural classification network segment.
Answer:
Explanation:
112.0.0.0
NEW QUESTION 134
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