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NEW QUESTION 87
In subnet division, which part of the natural classification IP address is occupied by the subnet number?
- A. Subnet number part
- B. None of the above is correct
- C. host number part
- D. Network number part
Answer: C
NEW QUESTION 88
In Windows operating system, which command can display ARP table entry information?
- A. show arp
- B. display arp
- C. arp -d
- D. arp -a
Answer: D
NEW QUESTION 89
A network connection is like:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
Two 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. The IP address of HostA is 192.168.0.2/24, and the address of the S0/0 interface of MSR-2 is 1.1.1.2/30. By configuring other relevant IP addresses and routes, HostA can communicate with HostB in the current network.
Nowadays, the customer requires that HostA is not allowed to log in to the MSR-2 through Telnet at address 1.1.1.2.
So which of the following configurations can meet this requirement? (multiple choice)
- A. Configure the following ACL on MSR-1 and apply it to the outbound direction of GE0/0 of MSR-1: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl- adv-3000]rule 0 deny tcp source 192.168.0.2 0 destination 1.1.1.2 0 destination-port eq telnet
- B. Configure the following ACL on MSR-1 and apply it to the inbound direction of GE0/0 of MSR-1: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl-adv -3000]rule 0 deny tcp source 192.168.0.1 0.0.0.255 destination 1.1.1.2 0.0.0.3 destination-port eq telnet
- C. Configure the following ACL on MSR-1 and apply it to the outbound direction of S1/0 of MSR-1: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl- adv-3000]rule 0 deny tcp source 192.168.0.2 0 destination 1.1.1.2 0.0.0.3 destination-port eq telnet
- D. Configure the following ACL on MSR-1 and apply it to the inbound direction of S1/0 of MSR-1: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl- adv-3000]rule 0 deny tcp source 192.168.0.1 0.0.0.255 destination 1.1.1.2 0 destination-port eq telnet
Answer: B,C
NEW QUESTION 90
Which of the following descriptions of circuit switching and packet switching is correct is ______. (Multiple choice)
- A. Low utilization of packet switching network resources
- B. The circuit switching delay is small, and the transmission is real-time
- C. High utilization of circuit-switched network resources
- D. Large packet switching delay, poor real-time transmission
Answer: B,D
NEW QUESTION 91
The IP address 10.0.10.65 and the mask 255.255.255.224 represent a ______.
- A. host address
- B. None of the above
- C. Network address
- D. Broadcast address
Answer: A
NEW QUESTION 92
During system startup, type ______ according to the prompt, the system will interrupt booting and enter BootROM mode.
- A. <Ctrl+c>
- B. <Ctrl+b>
- C. <Ctrl+z>
- D. <Ctrl+a>
Answer: B
NEW QUESTION 93
The broadcast address of the natural classification network segment corresponding to the IP address 202.135.111.77 is _____________.
Answer:
Explanation:
202.135.111.255
NEW QUESTION 94
Different priority levels can be configured for Telnet users on the MSR router. What is wrong about this priority level is ______. (Multiple choice)
- A. 0 is the access level
- B. The smaller the value, the lower the user's priority
- C. 3 is management level
- D. The smaller the value, the higher the user's priority
- E. 2 is device level
- F. 1 is the monitoring level
Answer: D,E
NEW QUESTION 95
The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0-----WAN----S1/0--MSR-2--GE0/0----HostB
On the WAN interface S1/0 of the two routers MSR-1 and MSR-2, only the PPP protocol is encapsulated and the IP address is configured. Currently, HostA and HostB can ping each other. Add the command ppp authentication-mode chap under MSR-1 interface S1/0, and then execute shutdown and undo shutdown operations on S1/0 of MSR-1.
So ______ . (Multiple choice)
- A. MSR-2 will send a Challenge and send it to MSR-1 along with the local user name to start CHAP authentication
- B. MSR-1 will send a Challenge and send it to MSR-2 with the user name of the local end to start CHAP authentication
- C. At this time, HostA and HostB cannot ping each other
- D. At this point, HostA and HostB can still ping each other
Answer: B,C
NEW QUESTION 96
Divide a class B network segment into subnets. If the subnet mask is 19 bits, then the maximum number of hosts that can be accommodated in each subnet is ______. (Please fill in Arabic numerals)
Answer:
Explanation:
8190
NEW QUESTION 97
The MSR router sends 5 packets by default in the last ping. If you want to specify the number of packets to be sent, you can use the ______ parameter.
- A. -s
- B. -d
- C. -n
- D. -c
Answer: D
NEW QUESTION 98
The customer's network connection looks like:
HostA------MSR-1------MSR-2--------MSR-3------HostB
The IP address configuration has been completed on all devices. To realize that HostA can access HostB, which of the following statements is correct regarding routing configuration? (multiple choice)
- A. At least one static route needs to be configured on MSR-3
- B. At least two static routes need to be configured on MSR-2
- C. At least one static route needs to be configured on MSR-1
- D. At least one static route needs to be configured on MSR-2
Answer: A,B,C
NEW QUESTION 99
Regarding the compressed expression of the IPv6 address 2001:0410:0000:0001:0000:0000:0000:45FF, which of the following is correct? (multiple choice)
- A. 2001:410::1::45FF
- B. 2001:410:0:1::45FF
- C. 2001:41:0:1:0:0:0:45FF
- D. 2001:410:0:1:0:0:0:45FF
Answer: C,D
NEW QUESTION 100
The two MSR30 routers of the customer are interconnected through the WAN interface S0/0, and PPP and RIP protocols are running at the same time. For security considerations, PPP PAP authentication and RIP plaintext authentication must be configured separately. Then the similarity between these two verification methods is ______.
- A. Both use 128bit key length
- B. Both are two handshake verification methods
- C. Usernames and passwords are spread on the network in clear text
- D. All pass clear text keywords on the Internet
Answer: D
NEW QUESTION 101
A Layer 3 switch is connected to the GigabitEthernet0/0 interface of the customer's router MSR-1, and this Layer 3 switch is the default gateway for multiple segments of the customer's office network. At the same time, the WAN interface of the router is connected to the Internet, and there is a DNS server on the Internet to provide services for hosts in the customer's local area network. The customer's office network can access the Internet normally. Now the following ACL is applied in the inbound direction of GigabitEthernet0/0 of MSR-1 :
firewall enable
acl number 3006
rule 0 deny tcp source 192.168.1.0 0.0.0.255
rule 5 permit ip
So ______ . (Multiple choice)
- A. Customers on the 192.168.1.0/24 network segment can send and receive external mail normally through mail clients such as Outlook
- B. Customers on the 192.168.0.0/24 network segment can download data from the Internet via FTP
- C. Customers on the 192.168.1.0/24 network segment cannot open external web pages through WWW
- D. Customers on the 192.168.1.0/24 network segment cannot send and receive external mail through mail clients such as Outlook
Answer: B,C,D
NEW QUESTION 102
The following description of Trunk ports and links is wrong. ______. (Multiple choice)
- A. The data frames transmitted on the Trunk link are all with VLAN ID
- B. Trunk link can carry data frames with different VLAN IDs
- C. The PVID value of the Trunk port cannot be modified
- D. When the Trunk port sends a data frame, if the data frame does not have a VLAN ID, add the corresponding PVID value to the data frame as the VLAN ID
Answer: A,C,D
NEW QUESTION 103
Both VLAN technology and port isolation technology can achieve Layer 2 isolation of data.
- A. error
- B. correct
Answer: B
NEW QUESTION 104
The two empty-configured routers MSR-1 and MSR-2 are connected as follows: HostA----GE0/0--MSR-1--S1/0---------S1/0-- MSR-2--GE0/0----HostB
The WAN interconnection network segment of the two routers is 192.168.10.0/30, and the GE0/0 address of MSR-1 is 172.16.1.1/24.
After configuration, HostA can ping through 172.16.1.1, and the WAN between the two routers is also interoperable.
Now the following configuration is added to MSR-1:
[MSR-1]rip
[MSR-1-rip-1]network 192.168.10.1
[MSR-1-rip-1]network 172.16.1.1
And started the RIP process on MSR-2.
Which of the following configurations must be done on the MSR-2 to ensure that the MSR-2 learns the RIP route? (multiple choice)
- A. [MSR-2-rip-1]network *.*.*.*, where *.*.*.* is any IP address
- B. [MSR-2-rip-1]network *.*.*.*, where *.*.*.* is any IP address on MSR-2
- C. [MSR-2-rip-1]network 0.0.0.0
- D. [MSR-2-rip-1]network 192.168.10.1
Answer: C,D
NEW QUESTION 105
The following description of the star network topology is correct ______. (Multiple choice)
- A. Since the star topology network shares the bus bandwidth, when the network load is too heavy, it will cause performance degradation
- B. The star topology has high robustness, and there is no single point of failure. Central node failure
- C. Star topology is easy to maintain
- D. In the star topology, the failure of one line does not affect the computer communication under other lines
Answer: C,D
NEW QUESTION 106
Router MSR-1 is interconnected with MSR-2 and MSR-3 respectively. Among them, there is a RIP route learned from MSR-2 to the destination network segment 120.10.12.0/24 in the routing table of MSR-1. It is 3; at this time, MSR-1 also receives a RIP route from MSR-3 that is still going to the destination network segment 120.10.12.0/24, and its Cost is 15, then ______.
- A. The routing table of MSR-1 will be updated to the route learned from MSR-3 to the cost of 15.
- B. The routing table of MSR-1 is not updated, and the network segment route learned from MSR-2 is still retained
- C. The routing table of MSR-1 will be updated, because RIP routing with a Cost of 15 means that the network may have loops
- D. The routing table of MSR-1 will not be updated, because RIP routing with a Cost of 15 means unreliable routing, and RIP will not write it into its routing table
Answer: B
NEW QUESTION 107
The three MSR routers are connected as shown in the figure. All three routers belong to OSPF Area 0, and at the same time, the interconnection network segments of the three routers are advertised in Area 0 through the network command. On RTC, the network segment NET-1 is also published in OSPF Area 0 through the network command. The OSPF Cost between the three routers is shown in the figure.
At present, the neighbor status of the three routers is stable, so ______. (Multiple choice)
- A. After the network status is stable, within the next 45 minutes, only Hello packets will be transmitted between OSPF neighbors on the network
- B. There is only one OSPF route to the NET-1 network segment in the RTA routing table
- C. For RTB, to reach the destination network segment NET-1 will give priority to RTB--->RTA--->RTC path
- D. There are two OSPF routes to the destination network segment NET-1 in the RTB routing table
Answer: B,C
NEW QUESTION 108
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