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NEW QUESTION 170
The three MSR routers RTA, RTB, and RTC are connected to the same frame relay network through their respective S1/0 interfaces. This frame relay network can provide enough PVC resources. As a network engineer, you need to assign IP addresses to these frame relay interfaces.
Which of the following statements is incorrect?
- A. Under the premise of correct routing configuration, three routers can communicate through this frame relay network without configuring sub-interfaces.
- B. If transit through any router is not allowed, at least two IP subnets are required to enable three routers to communicate with each other through this frame relay network
- C. If transit through any router is not allowed, at least three IP subnets are required to realize the two-by-two intercommunication of the three routers through this frame relay network
- D. Under the premise of correct routing configuration, three routers can communicate through this frame relay network with only one IP subnet.
Answer: C
NEW QUESTION 171
The interface information of a router is displayed as follows:
Serial0/0 current state: UP
Line protocol current state: DOWN
Physical layer is synchronous, Baudrate is 64000 bps
Interface is DCE, Cable type is V35, Clock mode is DCECLK
What kind of protocol may be encapsulated or run on this interface?
- A. Frame Relay
- B. RIP
- C. PPP
- D. None of the above answers are correct
- E. HDLC
Answer: A,B,C,E
NEW QUESTION 172
The default control protocol port used by FTP is ______.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 173
There are two hops from the source device to the destination device. Use the tracert command to detect the path. When the first hop is detected, the source device sends a UDP packet with a TTL of 1 to a larger port of the destination device. When the packet reaches the middle hop, the TTL will change to 0, so the device responds to the source device. Respond to an ICMP______ message.
- A. Time Exceeded
- B. Echo Request
- C. Port Unreachable
- D. Echo Reply
Answer: A
NEW QUESTION 174
If the configuration file specified by the user does not exist, the router initializes with _____.
- A. Use minimal configuration
- B. Most used configuration
- C. The last saved configuration
- D. Default configuration
Answer: D
NEW QUESTION 175
To configure a static route on the router. It is known that the destination address is 192.168.1.0, the mask is 20 bits, the outgoing interface is GigabitEthernet0/0, and the outgoing interface IP address is 10.10.202.1, so which of the following configurations is correct?
- A. ip route-static 192.168.1.0 255.255.248.0 GigabitEthernet0/0
- B. ip route-static 192.168.1.0 255.255.240.0 GigabitEthernet0/0
- C. ip route-static 192.168.1.0 255.255.240.0 10.10.202.1
- D. ip route-static 192.168.1.0 255.255.248.0 10.10.202.1
Answer: C
NEW QUESTION 176
The following ACL is configured on a router:
acl number 2000 match-order auto
rule 0 deny
rule 5 permit source 192.168.9.0 0.0.7.255
Assuming that the ACL is applied on the right interface and in the right direction, then ______. (Multiple choice)
- A. The data stream sent from the source network segment 192.168.9.0/22 is forbidden to pass
- B. The data stream sent from the source network segment 192.168.9.0/21 is allowed to pass
- C. Any data stream sent from the source network segment is forbidden to pass
- D. The data stream sent from the source network segment 192.168.9.0/21 is forbidden to pass
- E. The data stream sent from the source network segment 192.168.15.0/24 is allowed to pass
Answer: B,E
NEW QUESTION 177
Execute display ip routing-table on the router, then the next hop interface displayed in the routing table may be ______.
- A. Null0
- B. InLoop0
- C. Vlan500
- D. Serial 6/0/1
Answer: A,B,D
NEW QUESTION 178
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 cannot open external web pages through WWW
- 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 send and receive external mail through mail clients such as Outlook
- D. Customers on the 192.168.1.0/24 network segment can send and receive external mail normally through mail clients such as Outlook
Answer: A,B,C
NEW QUESTION 179
On the MSR router, if a certain file has been set as the startup file, you can use the ______ command to check whether the setting is correct.
- A. display startup
- B. display begin
- C. display start-configuration
- D. display boot
Answer: A
NEW QUESTION 180
NAPT mainly converts the ______ information of the data packet? (multiple choice)
- A. Data link layer
- B. Application layer
- C. Network layer
- D. Transport layer
Answer: C,D
NEW QUESTION 181
IPv6 uses ______ notation to represent addresses.
- A. dotted hexadecimal
- B. dotted decimal
- C. colon hexadecimal
- D. colon decimal
Answer: C
NEW QUESTION 182
It is found in the routing table of an MSR 30 router that the cost value of the route to the destination network segment 61.232.200.253/22 is 16, so the correct description of this route entry is ______. (Multiple choice)
- A. The route can only be a dynamic route
- B. If the route is learned through the RIP protocol, then the route may be in a suppressed state
- C. The route may be a static route
- D. If the route is learned through the RIP protocol, it is possible that the network 61.232.200.253/22 is malfunctioning
Answer: A,B,D
NEW QUESTION 183
After configuring the relevant configuration of the Telnet service on the router, the router can be pinged from the PC, but the Telnet router fails, and the PC keeps showing that it is connecting to x.x.x.x. The possible reason is ______. (Multiple choice)
- A. The intermediate network prevents the PC from initiating a connection to the router's TCP port 23
- B. The intermediate network routing configuration is incorrect
- C. The router Telnet service is not started
- D. The Telnet password is incorrectly set
Answer: A,C
NEW QUESTION 184
Which of the following statements about Ethernet is correct is ________. (Multiple choice)
- A. Ethernet adopts CSMA/CD mechanism
- B. None of the above statements are correct
- C. Ethernet is a network based on shared media
- D. Ethernet transmission distance is short, the longest transmission distance is 500m
Answer: A,C
NEW QUESTION 185
The correct statement below is ______. (Multiple choice)
- A. In RSTP mode, each port of the device will send out RSTP BPDU packets. When it is found to be connected to an STP device, the port will automatically migrate to work in STP compatibility mode
- B. In MSTP mode, each port of the device will send out MSTP BPDU packets. When a port is found to be connected to an STP device, the port will automatically migrate to work in STP compatibility mode
- C. In STP compatibility mode, each port of the device will send out STP BPDU packets
- D. MSTP and RSTP can identify each other's protocol packets and are compatible with each other
Answer: A,B,C,D
NEW QUESTION 186
In the OSI reference model, encryption is a function of ______.
- A. Transport layer
- B. Physical layer
- C. Presentation layer
- D. Session layer
Answer: C
NEW QUESTION 187
The two branches of XYZ company are located in different regions, and a wide area network connection must be established between them. According to the plan, the WAN adopts the PPP protocol. Considering network security, it is required that password-type message information is not allowed to be transmitted in clear text on the network. Then which PPP authentication protocol should be adopted?
- A. PAP
- B. MD5
- C. 3DES
- D. CHAP
Answer: D
NEW QUESTION 188
The network administrator of a certain enterprise needs to set a subnet mask to divide the class C network 211.110.10.0 it is responsible for into subnets. It is required that the number of hosts in each subnet is not less than 20. How many subnet masks can be used? Division? (multiple choice)
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: A,B,C
NEW QUESTION 189
In the switching network shown in the figure, all switches have enabled the STP protocol.
According to the information in the figure, which switch will be selected as the root bridge?
- A. SWA
- B. Insufficient information, unable to judge
- C. SWD
- D. SWC
- E. SWB
Answer: E
NEW QUESTION 190
As shown in the figure, the router RTA is connected with PCA and PCB.
If you need to enable ARP proxy on RTA so that RTA can forward ARP packets between PCs, which of the following configurations is correct? (multiple choice)
- A. [RTA] proxy-arp enable port G1/0/1
- B. [RTA] proxy-arp enable
- C. [RTA-GigabitEthernet0/0] proxy-arp enable
- D. [RTA-GigabitEthernet0/1] proxy-arp enable
Answer: C,D
NEW QUESTION 191
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