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NEW QUESTION # 104
The following description of Trunk ports and links is wrong. ______. (Multiple choice)
- A. 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
- B. Trunk link can carry data frames with different VLAN IDs
- C. The data frames transmitted on the Trunk link are all with VLAN ID
- D. The PVID value of the Trunk port cannot be modified
Answer: A,C,D
NEW QUESTION # 105
The following statement about STP is correct. ______. (Multiple choice)
- A. STP can activate the blocked redundant backup link to restore network connectivity when the current active path fails
- B. In a complex network, STP consumes a lot of processing resources, causing the network to fail to work normally.
- C. STP information transfer is realized by transferring BPDUs between bridges running STP
- D. STP eliminates possible path loops in the network by blocking redundant links in the network
Answer: A,C,D
NEW QUESTION # 106
Execute display ip routing-table on the router, then the next hop interface displayed in the routing table may be ______.
- A. Null0
- B. Serial 6/0/1
- C. Vlan500
- D. InLoop0
Answer: A,B,D
NEW QUESTION # 107
DNS works on the ______ of the OSI reference model.
- A. Application layer
- B. Session layer
- C. Network layer
- D. Transport layer
Answer: A
NEW QUESTION # 108
The customer's network connection looks like:
N1-----MSR-1-----MSR-2----MSR-3-----N2
The following static routes are configured on MSR-1:
ip route-static 192.168.100.0 255.255.0.0 null0
Then the correct interpretation of this route is ______. (Multiple choice)
- A. The static route always exists in the routing table
- B. In some cases, this route can avoid loops
- C. If this static route is matched, the packet will be discarded and no information will be returned to the source address
- D. On this router, all packets whose destination address belongs to 192.168.100.0/16 will be discarded only if this route is matched
Answer: A,B,C
NEW QUESTION # 109
Two empty-configured MSR routers are directly connected back-to-back through their respective WAN Serial1/0 interfaces, and their interconnection network segment is 192.0.0.0/24.
At the same time, the two routers are connected to their respective LAN segment users through their respective GigabitEthernet0/0: HostA----GE0/0--MSR-1--S1/0---------S1/0-- MSR-2--GE0/0----HostB
Configure RIPv1 on both routers. Now both routers have learned the RIP route of the opposite LAN segment.
So which of the following statements are correct?
- A. RIP packets between the two routers are still based on UDP transmission
- B. If the LAN segment of one of the routers is 10.0.0.0/24, then the routing table of the other router will learn the route of 10.0.0.0/8
- C. The way to exchange RIP packets between the two routers is broadcast
- D. RIP RADIUS authentication can be configured on the WAN interface of the two routers to enhance network security
Answer: A,B,C
NEW QUESTION # 110
The information displayed by the display fr map-info command is as follows:
[RTA]display fr map-info
Map Statistics for interface Serial1/0 (DTE)
DLCI 30, Point-to-Point DLCI, Serial1/0.1
created at: 2008/09/17 17:46:59, status: ACTIVE
DLCI 40, Point-to-Point DLCI, Serial1/0.2
created at: 2008/09/17 17:48:22, status: INACTIVE
The correct statement below is ______.
- A. Both PVCs shown in the displayed information have been established.
- B. The router is used as a user-side device.
- C. Two point-to-point sub-interfaces are created under the interface Serial1/0.
- D. All items are correct.
Answer: B,C
NEW QUESTION # 111
After configuring NAPT, it is found that some internal network addresses can always ping the external network, while others cannot. The possible reasons are ______.
- A. ACL setting is incorrect
- B. Insufficient NAT device performance
- C. The NAT address pool has only one address
- D. NAT configuration does not take effect
Answer: A
NEW QUESTION # 112
The correct statement below is ______. (Multiple choice)
- A. In the active transfer mode of FTP, the FTP client actively establishes a data connection to the server
- B. FTP server and client in passive transmission mode use temporary ports to establish data connections
- C. The passive transfer mode of FTP uses the PORT command
- D. The passive transfer mode of FTP uses the PASV command
- E. In the active transmission mode of FTP, the FTP server actively establishes a data connection to the client
Answer: B,D,E
NEW QUESTION # 113
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. SWC
- B. SWB
- C. Insufficient information, unable to judge
- D. SWD
- E. SWA
Answer: B
NEW QUESTION # 114
On the MSR router, if you want to completely delete an obsolete file in the recycle bin, you can execute the ______ command.
- A. reset recycle-bin
- B. reset trash-bin
- C. clear trash
- D. clear all
Answer: A
NEW QUESTION # 115
The default subnet mask for class B addresses is ______.
- A. 255.255.0.0
- B. 255.255.255.0
- C. 255.0.0.0
- D. None of the above is correct
Answer: A
NEW QUESTION # 116
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 # 117
The correct statement about the IP address below is ______. (Multiple choice)
- A. IP address consists of two parts: network number and host number.
- B. Class D IP addresses are usually used as multicast addresses.
- C. The network number of the Class A IP address has 8 digits, and the actual variable number is 7 digits.
- D. Address translation (NAT) technology is usually used to solve the conversion of class A addresses to class C addresses.
Answer: A,B,C
NEW QUESTION # 118
The Ethernet port Ethernet1/0 of the customer router MSR-1 is configured as follows:
interface Ethernet0/0
ip address 192.168.0.1 255.255.255.0
This interface is connected to a three-layer switch, and this three-layer switch is where the default gateway of the network segment 192.168.7.0/24~192.168.83.0/24 of the customer's office network is located.
Now the customer requires that an ACL be configured on the MSR-1 to prohibit all users on the office network from initiating Telnet to the address 192.168.0.1 of the MSR-1, so which of the following configurations is correct?
- A. acl number 3000 rule 0 deny 255.255.255.255 0 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 outbound
- B. acl number 3000 rule 0 deny 0.0.0.0 255.255.255.255 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 inbound
- C. acl number 3000 rule 0 deny 255.255.255.255 0 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 inbound
- D. acl number 3000 rule 0 deny 0.0.0.0 255.255.255.255 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 outbound
Answer: B
NEW QUESTION # 119
The default subnet mask for class A addresses is ______.
- A. 255.255.255.0
- B. 255.255.0.0
- C. None of the above is correct
- D. 255.0.0.0
Answer: D
NEW QUESTION # 120
Three MSR routers are connected in the same LAN network, as shown in the figure. Run OSPF on the LAN interconnection network segment of the three routers, and the DR priorities of RTA, RTB, and RTC are 2, 2, and 3 respectively.
Due to the failure of the RTC LAN link, only RTA and RTB are currently working normally, and the OSPF neighbor status between RTA and RTB is stable. So _____ . (Multiple choice)
- A. After the RTC link is restored, the DR will be reselected in the network, and the RTC will become the new DR
- B. After the RTC link is restored, 3 OSPF adjacencies will be established in the network
- C. After the RTC link is restored, the OSPF adjacency status of RTC and RTB is FULL
- D. After the RTC link is restored, two OSPF adjacencies will be established in the network
Answer: B,C
NEW QUESTION # 121
The WAN link between the two routers MSR-1 and MSR-2 uses the PPP protocol. The two ends learn each other's routes by configuring RIP. Currently, the route learning is normal. Now the following commands are added to the RIP configuration of MSR-1:
[MSR-1-rip-1] silent-interface all
So ______ . (Multiple choice)
- A. This command makes all interfaces of MSR-1 only receive routing updates without sending routing updates
- B. After configuring this command, the RIP route in the MSR-2 routing table disappears immediately
- C. After configuring this command, the RIP route in the MSR-1 routing table disappears immediately
- D. This command makes all interfaces of MSR-1 only send routing updates and not accept routing updates
Answer: A
NEW QUESTION # 122
A router is connected to the operator's network through the Serial1/0 interface. To configure a default route on this router to achieve the purpose of accessing the Internet, which of the following configurations must be correct and effective?
- A. The above configuration is not correct
- B. ip route-static 0.0.0.0 0.0.0.0 Serial1/0
- C. ip route-static 255.255.255.255 0.0.0.0 Serial1/0
- D. ip route-static 0.0.0.0 0 Serial1/0
Answer: A
NEW QUESTION # 123
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