EMT Practice Test

1. Question Content...

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Question1: After the DHCP client receives the DHCP ACK message, if it finds that the IP address it will use already exists on the network, what message will it send to the DHCP server?

Question2: The two routers MSR-1 and MSR-2 are interconnected through GigabitEthernet0/0, and RIPv2 is running between the two routers. Now, the GigabitEthernet0/0 interface of one of the routers MSR-1 wants to only send RIP packets instead of Accept RIP protocol message, then which of the following implementation methods are feasible?

Question3: Which of the following descriptions of circuit switching and packet switching is correct is ______. (Multiple choice)

Question4: A default route A is configured on an MSR router running RIP, and its next hop address is 100.1.1.1; at the same time, the router learns a default route B whose next hop address is also 100.1.1.1 through RIP.
The router uses the default priority and cost value for the routing protocol, so ______.

Question5: The user can use the ______ command to view the history commands.

Question6: The correct statement about the IP address below is ______. (Multiple choice)

Question7: The rate of the D channel in ISDN BRI is ______.

Question8: In the switching network shown in the figure, all switches have enabled the STP protocol.

SWA was selected as the root bridge. According to the information in the figure, the ______ port should be set to the Blocking state

Question9: An empty MSR router RTA connects two routers RTB and RTC running in OSPF Area 0 through GE0/0 and GE1/0 respectively. The IP addresses of the interfaces GE0/0 and GE1/0 of RTA are 192.168.3.2/24 and 192.168.4.2/24 respectively. Add the following configuration on RTA:
[MSR-ospf-1] area 0.0.0.0
[MSR-ospf-1-area-0.0.0.0]network 192.168.0 0.0.3.255
[MSR-GigabitEthernet0/0]ospf cost 2
[MSR-GigabitEthernet1/0]ospf dr-priority 0
Then the correct description of the above configuration is _____. (Multiple choice)

Question10: The IP address of a private network device A is 192.168.1.1/24, and its corresponding public network IP address is 2.2.2.1; the IP address of public network device B is 2.2.2.5. If you want B to be able to ping A, which of the following configurations can be used on the NAT device?

Question11: 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?

Question12: The following routing information is seen on the MSR router running RIP:
<MSR>display ip routing-table 6.6.6.6
Routing Table: Public
Summary Count: 2
Destination/Mask Proto Pre Cost NextHop Interface
6.6.0/24 RIP 100 1 100.1.1.1 GE0/0
6.0.0.0/8 Static 60 0 100.1.1.1 GE0/0
At this time, the router receives a data packet with a destination address of 6.6.6.6, then ______.

Question13: According to the needs of users, the administrator needs to create a new VLAN on the switch SWA, and the VLAN needs to include the port Ethernet1/0/2.
According to the above requirements, which of the following commands need to be configured on the switch?

Question14: In the routing table of an MSR router, which of the following sources of routes may be included? (multiple choice)

Question15: 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)

Question16: 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)

Question17: The two routers RTA and RTB are interconnected back-to-back using serial ports. The serial port of RTA is configured with HDLC protocol, and the serial port of RTB is configured with PPP protocol.
Both devices are configured with the correct IP address, then what will happen is ______. (Multiple choice)

Question18: The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0-----WAN-----S1/0--MSR-2--GE0/0----HostB
The two MSR routers are interconnected through the WAN, and the physical connection is now normal. The address of interface S1/0 of MSR-1 is 3.3.3.1/30, and the address of interface S1/0 of MSR-2 is 3.3.3.2/30. Now the following three static routes are configured on MSR-1:
ip route-static 192.168.1.0 255.255.255.0 3.3.3.2
ip route-static 192.168.2.0 255.255.255.0 3.3.3.2
ip route-static 192.168.0.0 255.255.255.0 3.3.3.2
The 192.168.0.0/22 ​​subnet is the local area network segment where the host HostB is located.
So which of the following descriptions are correct? (multiple choice)

Question19: The following statement about the functions of each layer of the OSI reference model is wrong.

Question20: Xiao L is a senior IP network expert, determined to develop a new dynamic routing protocol. Which of the following should be included in the working process of a routing protocol? (multiple choice) (multiple choice)

Question21: 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?

Question22: The network delay (delay) defines the time required for the network to transmit data from one network node to another network node. Network latency includes ______. (Multiple choice)

Question23: The routers MSR-1 and MSR-2 are interconnected through their respective GigabitEthernet0/0, and RIP is running between the two routers. At present, RIP has correctly completed remote routing learning. Now you can see the following in the routing table of MSR-1 The routing information:
Destination/Mask Proto Pre Cost NextHop Interface
2.0.0.0/24 RIP 100 15 100.1.1.1 GE0/0
6.0.0.0/8 RIP 100 1 100.1.1.1 GE0/0
Then based on this information, ______ can be inferred.

Question24: Which of the following statements about Ethernet is correct is ________. (Multiple choice)

Question25: The WAN link between the two routers MSR-1 and MSR-2 uses the PPP protocol, and RIP is configured on the two routers to advertise routing information to each other. At present, you can see the RIP routes advertised by MSR-2 on MSR-1, but you can't see any RIP routes in the routing table of MSR-2. The possible reason is ______. (Multiple choice)

Question26: Two MSR routers are directly connected back-to-back through Serial1/0, and one of the MSR routers sees the following configuration: ★
interface Serial1/0
ip address 8.8.8.2 255.255.255.0
#
interface GigabitEthernet0/0
port link-mode route
ip address 100.1.1.2 255.255.255.0
#r
ip 1
version 2
network 0.0.0.0
#
ip route-static 0.0.0.0 0.0.0.0 8.8.8.1
Assuming that both routers are correctly configured with RIP and all interfaces are UP, which of the following analyses are correct about this configuration?

Question27: The standard physical medium of 100BASE-TX is ______.

Question28: 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)

Question29: The following statement about the upgrade of H3C network equipment is correct ______. (Multiple choice)

Question30: The TFTP protocol is a protocol based on ______.

Question31: The customer router connects to the operator's network through the S1/0 interface. The S1/0 interface uses the default configuration.
The following route is configured on the router: [MSR]ip route-static 0.0.0.0 0.0.0.0 Serial1/0
However, when viewing the routing table through display ip routing-table, it is found that the route is not displayed in the routing table. Based on this, it is speculated that the possible reason is ______. (Multiple choice)

Question32: Use the ______ command to specify the operating system software to be used for the next startup.

Question33: To set a subnet mask so that 192.168.0.94 and 192.168.0.116 are not in the same network segment, the subnet mask used may be ______. (Multiple choice)

Question34: The network environment is shown in the figure. Do the following NAT configuration on router RTA:

[RTA]acl number 2000
[RTA-acl-basic-2000]rule 0 permit source 100.0.0.0 0.0.0.255
[RTA]nat address-group 1 200.76.28.11 200.76.28.20
[RTA]interface Ethernet0/1
[RTA-Ethernet0/1]nat outbound 2000 address-group 1 no-pat
After configuration, Client_A and Client_B access Server at the same time, then the content of RTA's NAT table may be ______ at this time.

Question35: The three MSR routers are connected as shown in the figure. 192.168.1.0/30 is the interconnection network segment between RTA and RTB, and 10.10.10.0/30 is the interconnection network segment between RTB and RTC.

OSPF is running on the interconnection interfaces of the three routers and all belong to Area 0. At the same time, only the three router interconnection interface network segments are published in Area 0.
Assuming that OSPF is operating normally and OSPF neighbors are established successfully, then ______. (Multiple choice)

Question36: The following description of the characteristics of the router is correct ______. (Multiple choice)

Question37: In the OSI reference model, encryption is a function of ______.

Question38: The router S0/0 interface is connected to the network through frame relay, and the following interface information can be seen on this router:
[MSR]display interface Serial 0/0
Serial0/0 current state: UP
Line protocol current state: UP
Internet Address is 3.3.3.1/24 Primary
Link layer protocol is FR IETF
LMI DLCI is 0, LMI type is Q.933a, frame relay DTE
LMI status enquiry sent 91, LMI status received 69
LMI status timeout 22, LMI message discarded 1
Then you know ______. (Multiple choice)

Question39: Use the ______ command on the MSR router to turn off the information center function.

Question40: The FQDN of the following domain names is ______.

Question41: The Layer 2 Ethernet switch searches the MAC address table for an entry that matches the destination MAC address of the frame, thereby forwarding the frame from the corresponding interface. If the search fails, the switch will ______.

Question42: An empty-configured MSR router is connected to the same OSPF network through multiple interfaces, and OSPF is enabled on all these interfaces. After the configuration is completed, the router has successfully learned the OSPF routes in the network.
Now run the following command on an OSPF interface of the router:
[MSR-GigabitEthernet0/0]ospf cost 256
In the case of keeping other configurations unchanged, the correct understanding of the configuration is _____.

Question43: The IP address 203.108.2.110 is the ______ address.

Question44: 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)

Question45: Create an aggregate port with port Ethernet1/0/1 and ID 2 on the S3610 switch. The correct command is ______.

Question46: The PC is connected to the port E1/0/2 of the switch SWA, the IP address is 10.1.1.1, and the MAC address is 00-01-02-01-21-23. To ensure network security, you need to configure MAC+IP+ port binding on port E1/0/2.
Which of the following commands is correct?

Question47: The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0-----WAN----S1/0--MSR-2--GE0/0----HostB
The customer's WAN network only supports synchronization, and S1/0 of MSR-2 needs to negotiate an IP address from the opposite MSR-1 instead of manually configuring a static IP address.
Then the S1/0 interface of the two routers can run ______. (Multiple choice)

Question48: To view the debug information of NAT packets, you should use the ______ command to turn on the debug information and output it to the display.

Question49: 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)

Question50: Divide a class B network segment into subnets. If the subnet mask is 19 bits, the maximum number of subnets that can be divided is ___. (Please fill in Arabic numerals)

Question51: A network administrator configured on a router
RIP: rip 1
version 2
network 100.0.0.0
network 8.0.0.0
However, it is found that the RIP route of the opposite end cannot be learned. The administrator needs to enable RIP debugging information on the router. Which of the following configurations can be used to view RIP debugging information on the router?

Question52: There are many kinds of WAN interfaces. Which of the following descriptions of WAN interfaces is correct is ______. (Multiple choice)

Question53: WLAN (Wireless LAN) is a combination of computer network and wireless communication technology. Which of the following are WLAN technical standards? (multiple choice)

Question54: 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)

Question55: The IP protocol corresponds to layer ______ of the OSI reference model.

Question56: Which of the following statements about HDLC is correct is ______. (Multiple choice)

Question57: Connect an empty-configured MSR router to the network through GigabitEthernet0/0, GigabitEthernet0/1, Serial1/0, and configure the IP addresses of these three interfaces as 10.1.1.1/30, 12.12.12.224/30, 192.168.10.1 /twenty four .
After configuration, these three interfaces can communicate with the interface of the peer device directly connected, and then add the following configuration on the router:
[MSR]rip
[MSR-rip-1]network 10.0.0.0
[MSR-rip-1]network 192.168.10.0
Then the correct description of the role and intent of this order is ______. (Multiple choice)

Question58: Which part of the subnet division technology is implemented on the basis of the natural classification of IP address division?

Question59: The client router's interface GigabitEthernet0/0 is connected to the LAN host HostA, and its IP address is 192.168.0.2/24;
The interface Serial6/0 interface is connected to the remote end and is currently operating normally. The ACL configuration is now added as follows:
firewall enable
firewall default permit
acl number 3003
rule 0 permit tcp
rule 5 permit icmp
acl number 2003
rule 0 deny source 192.168.0.0 0.0.0.255
interface GigabitEthernet0/0
firewall packet-filter 3003 inbound
firewall packet-filter 2003 outbound
ip address 192.168.0.1 255.255.255.0
interface Serial6/0
link-protocol ppp
ip address 6.6.6.2 255.255.255.0
Assuming other related configurations are correct, then ______. (Multiple choice)

Question60: The main link of the WAN of a company's MSR router is a synchronous and asynchronous serial port, which is connected to the operator's network through a V.35 cable; the router also uses an ISDN BRI interface as a backup link.
Regarding the line bandwidth, which of the following statements are correct? (multiple choice)

Question61: 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 ______.

Question62: Which of the following descriptions about Frame Relay DLCI are wrong? (multiple choice)

Question63: In the process of tearing down the TCP connection as shown in the figure, the X part of the ACK should be filled with ______.

Question64: 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.

Question65: Regarding the compressed expression of the IPv6 address 2001:0410:0000:0001:0000:0001:0000:45FF, which of the following is correct? (multiple choice)

Question66: The two MSR routers are interconnected back-to-back through their respective Serial1/0 interfaces, and the PPP link layer protocol is encapsulated on the WAN interface. The correct statement about the PPP link in this network is ______. (Multiple choice)

Question67: The correct statement below is ______. (Multiple choice)

Question68: The XYZ company network is shown in the figure.

There is no logical interface configured on the Router; all hosts can communicate normally. Then there are ___ broadcast domains in this network. (Please fill in Arabic numerals)

Question69: The address of the GE0/0 interface of the router MSR-1 is 192.168.100.1/24. This interface is connected to a Layer 3 switch, and this Layer 3 switch is the default gateway for multiple network segments of the customer's office network. MSR-1 is connected to the Internet through the serial port S1/0. The entire network has been interoperable normally, and office network users can access the Internet.
For security reasons, it is necessary to prohibit the client host from pinging the GE0/0 interface of MSR-1, so the following ACL is configured on the router:
acl number 3008
rule 0 deny icmp source 192.168.1.0 0.0.0.255
At the same time, the ACL is applied in the inbound direction of GE0/0. It is found that users on the 192.168.0.0/24 network segment in the LAN can still ping the GE0/0 interface address. According to the above information, _______ can be inferred.

Question70: 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)

Question71: The correct sequence of the steps in the startup process of detecting the router system is _________. (Fill in the code of each step one by one, there can be no spaces in between, such as: ABCD)

Question72: On the MSR router, use the ______ command to view the current running version of the device.

Question73: The correct statement below is ______. (Multiple choice)

Question74: The customer's network structure is shown in the figure.

To achieve the following requirements:
1. Host C and Host B visit each other
2. Host B and Host A cannot visit each other
3. Host A and Host C cannot visit each other
So ______ . (Multiple choice)

Question75: In the switching network shown in the figure, all switches have enabled the STP protocol.

SWA was selected as the root bridge. According to the information in the figure, the _______ port should be set to the Blocking state. (Multiple choice)

Question76: When configuring ISDN DCC, the customer configured the following dialer-rule on his MSR router:
[MSR] dialer-rule 1 acl 3000
Which of the following statements about this configuration are correct? (multiple choice)

Question77: Which of the following statements about MAC addresses are correct? (multiple choice)

Question78: 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)

Question79: UDP belongs to the ______ of the OSI reference model.

Question80: The following statements about OSPF information display and debugging commands are correct _____. (Multiple choice)

Question81: The customer's two MSR routers MSR-1 and MSR-2 are interconnected back-to-back through their respective S0/0 interfaces. The frame relay protocol started and encapsulated between the S0/0 interfaces of two MSR routers, where MSR-1 is the frame relay DCE side, and MSR-2 is the frame relay DTE side.
In order to save resources, frame relay sub-interfaces are configured on both routers, which are configured as follows:
MSR-1:
interface Serial0/0.40 p2p
fr dlci 222
ip address 30.2.2.2 255.255.255.252
MSR-2:
interface Serial0/0.100 p2p
fr dlci 222
ip address 30.2.2.1 255.255.255.252
Based on this configuration, you can guess ______. (Multiple choice)

Question82: Which of the following statements about CSMA/CD is correct is ______. (Multiple choice)

Question83: The following descriptions about Trunk ports and links are correct ______. (Multiple choice)

Question84: A customer’s MSR router is connected to the Internet through the WAN interface S1/0, and to the office network through the LAN interface GE0/0. At present, office network users can access the Internet normally.
Add the following ACL configuration on the router:
firewall enable
firewall default deny
# acl number 3003
rule 0 deny icmp
rule 5 permit tcp destination-port eq 20
#
interface GigabitEthernet0/0
firewall packet-filter 3000 inbound
firewall packet-filter 3000 outbound
So ______ .

Question85: The following routing information is seen on the MSR router running RIP:
<MSR>display ip routing-table 6.6.6.6
Routing Table: Public
Summary Count: 2
Destination/Mask Proto Pre Cost NextHop Interface
6.0.0.0/8 RIP 100 1 100.1.1.1 GE0/0
6.6.6.0/24 Static 60 0 100.1.1.1 GE0/0
At this time, the router receives a data packet with a destination address of 6.6.6.6, then ______.

Question86: On the MSR router, you can see the following display in the routing table:
Destination/Mask Proto Pre Cost NextHop Interface
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
192.168.96.0/24 Static 60 0 192.168.120.153 S6/0
Then the correct description of the route with the destination address of 192.168.96.0/24 is ______.

Question87: If all 0 and all 1 subnets can be used as effective subnets, the class C address 192.168.1.0 is subnetted with a 26-bit subnet mask, and the number of effective subnets that can be divided is ______.

Question88: The broadcast address of the natural classification network segment corresponding to the IP address 125.1.1.1 is ____________.

Question89: The transport layer protocol that DNS can use is ______.

Question90: The customer's network looks like this:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
The WAN interfaces on the two routers are configured as follows:
MSR-1:
firewall enable
acl number 3000
rule 0 deny ip source 192.168.0.0 0.0.0.255
rule 5 permit ip
interface Serial1/0
link-protocol ppp
firewall packet-filter 3000 outbound
ip address 6.6.6.2 255.255.255.0
MSR-2:
interface Serial1/0
link-protocol ppp
ip address 6.6.6.1 255.255.255.0
Assuming that the IP address of HostA is 192.168.0.2/24, and the routing and other related interface configurations are correct, then _______. (Multiple choice)

Question91: 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)

Question92: During the establishment of the TCP connection as shown in the figure, the Z part of the SYN should be filled with ________.

Question93: The network address of the natural classification network segment corresponding to the IP address 192.48.117.22 is.

Question94: In the following statement about Easy IP, the error is ______.

Question95: 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)

Question96: If you want the current configuration to continue to take effect after the system restarts, you should use the _______ command to save the current configuration to the configuration file before restarting the device. (Please write full order)

Question97: In the LCP negotiation phase, what content will PPP negotiate? (multiple choice)

Question98: Two MSR routers implement dynamic routing learning through OSPF. On one of the routers MSR-1, there are three interface IP addresses 192.168.8.1/24, 192.168.13.254/24 and 192.168.29.128/24, so they must pass a network Command to start OSPF on these three interfaces, which of the following configuration is feasible? (multiple choice)

Question99: 119.100.1100 1000
132.119.100.1100 1111 .... Broadcast address
13. The well-known port number of the transport layer used by TFTP is ______.

Question100: The network administrator of a certain enterprise needs to set a subnet mask to divide the class C network 211.110.10.0 that he is responsible for into at least 8 subnets. How many subnet masks can be used for division? (multiple choice)

Question101: In Windows operating system, which command can display ARP table entry information?

Question102: The Serial0/0 interface of the router MSR1 of the Shenzhen branch of XYZ Company is directly connected to the Serial0/0 interface of the ISP router MSR2 through the WAN line, and the Serial0/0 interface address of the MSR2 is 100.126.12.1. XYZ company can visit the website of Beijing head office at 202.102.100.2 through this ISP. There is no routing protocol running on MSR1, only the following static route is configured: ip route-static 202.102.100.2 24 100.126.12.1
So which descriptions about this route and MSR1 routing table are correct? (multiple choice)

Question103: 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?

Question104: According to the different ways the switch processes VLAN data frames, the port types of H3C Ethernet switches are divided into ______. (Multiple choice)

Question105: Common FTP file transfer types include ______. (Multiple choice)

Question106: The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
The network has been correctly configured with the IP address and routing. Currently, HostA and HostB can communicate with each other in the network.
For some security considerations, the customer requires that HostB cannot ping HostA, but at the same time HostA can ping HostB, and the transmission of other messages between HostA and HostB is not restricted, so which of the following statements is correct?

Question107: During system startup, type ______ according to the prompt, the system will interrupt booting and enter BootROM mode.

Question108: The command to start the spanning tree protocol on the switch is ____.

Question109: The network environment is shown in the figure, ______ is the correct NAPT configuration. (Multiple choice)

Question110: On the MSR router, if you want to view the files in the recycle bin, you can use the ______ command.

Question111: Which of the following statements about frame relay are correct?

Question112: The following statement about the upgrade of H3C network equipment is correct ______. (Multiple choice)

Question113: A network environment looks like:
HostA----GE0/0--MSR-1--S1/0-----Frame Relay----S1/0--MSR-2--GE0/0----HostB
Among them, two routers MSR-1 and MSR-2 connect to the frame relay network through S1/0 respectively. Configure IP addresses 3.3.3.1/24 and DLCI 31 on the S1/0 interface of MSR-1, and configure IP addresses 3.3.3.2/24 and DLCI 82 on the S1/0 interface of MSR-2. The physical connection is completely normal, and the other default configurations are the same.
So which of the following statements are wrong? (multiple choice)

Question114: Suppose an MSR router obtains two routes to the destination network segment 100.120.10.0/24. The Cost of these two routes are 120 and 10, and the priority is 10 and 150 respectively. Then the data packet destined for this destination address will be ______. (Multiple choice)

Question115: The subnet mask of the IP address 132.119.100.200 is 255.255.255.224, so the IP subnet address where it is located is ______.

Question116: The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0-----WAN-----S1/0--MSR-2--GE0/0----HostB
It is known that the IP address of GE0/0 of MSR-2 is 2.2.2.1/24. The network is currently operating normally, and the hosts HostA and HostB on both sides can communicate with each other. Now the following routing is configured on MSR-2:
ip route-static 2.2.2.1 24 NULL 0
So ______ . (Multiple choice)

Question117: Regarding the compressed expression of the IPv6 address 2001:0410:0000:0001:0000:0000:0000:45FF, which of the following is correct? (multiple choice)

Question118: The two empty-configured MSR routers are connected as shown in the figure. By configuring the IP address, the GE0/0 interfaces of the two routers can communicate with each other.

Now the following configurations are added to the two routers respectively:
RTA:
[RTA]ospf
[RTA-ospf-1]area 0
[RTA-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.3
[RTA-GigabitEthernet0/0]ospf dr-priority 2
RTB:
[RTB]ospf [RTB-ospf-1]area 0
[RTB-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.3
[RTB-GigabitEthernet0/0]ospf dr-priority
Then after the OSPF neighbor status is stable, ______.

Question119: Which of the following statements about IP addresses are correct is ______. (Multiple choice)

Question120: On the MSR router, use the ______ command to view the router's NAT aging time.

Question121: Which of the following statements about optical fiber are correct? (multiple choice)

Question122: Use the display nat session command to view the NAT information, the display is as follows:
There are currently 4 NAT sessions
Protocol GlobalAddr Port InsideAddr Port DestAddr Port
-198.80.28.11 --- 10.0.0.2 --- --- ---
VPN: 0, status: NOPAT, TTL: 00:04:00, Left: 00:04:00
-198.80.28.12 --- 10.0.0.1 --- --- ---
VPN: 0, status: NOPAT, TTL: 00:04:00, Left: 00:03:59
1 198.80.28.12 1024 10.0.0.1 1024 198.80.29.4 1024
VPN: 0, status: NOPAT, TTL: 00:01:00, Left: 00:00:59
1 198.80.28.11 512 10.0.0.2 512 198.80.29.4 512
VPN: 0, status: NOPAT, TTL: 00:01:00, Left: 00:01:00
This information shows that the private network address is ______. (Multiple choice)

Question123: Which of the following statements about the OSPF area in the network (Area) is correct? (multiple choice)

Question124: During the establishment of the TCP connection as shown in the figure, the X part of the SYN should be filled with ________.

Question125: The WAN link between the only two routers MSR-1 and MSR-2 in the customer network adopts the PPP protocol, and the two ends learn each other's routes by configuring RIP. Currently, the route learning is normal, and now it is in the RIP of MSR-1. The following commands are added to the configuration:
[MSR-1-rip-1] silent-interface all
So ______ . (Multiple choice)

Question126: The two MSR routers are interconnected through their respective WAN interface S1/0, and RIPv2 is running on the two routers to dynamically complete the remote routing of each other. Now for security reasons, it is necessary to add verification on the RIP, so which of the following Is the RIP configuration correct?

Question127: Which of the following statements about HDLC is correct is ______. (Multiple choice question)

Question128: The router discovery function in IPv6 Neighbor Discovery Protocol refers to ______.

Question129: The customer router MSR-1 configures the MP to connect to the MSR-2 through interfaces S0/0 and S0/1. Currently, the MP is running normally. At the same time, the two routers run RIP to complete the route learning of the LAN segment of the two routers. Then the Metric value of the RIP route learned on MSR-1 may be ______. (Multiple choice)

Question130: The Ethernet frame exchange on the switch relies on the MAC address mapping table, which can be established by ______. (Multiple choice)

Question131: In the router's routing table, there is an entry for a route with a network segment of 10.168.100.0/24, with a Cost of 20 and a Preference of 255, so which of the following statements about this route are correct?

Question132: The number of available host addresses contained in the natural classification network segment corresponding to the IP address 165.110.20.67 is. (Please fill in Arabic numerals)

Question133: 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?

Question134: The following devices working at the data link layer of the OSI reference model are ______.

Question135: DNS works on the ______ of the OSI reference model.

Question136: The WAN links of the customer's two routers MSR-1 and MSR-2 use the PPP protocol, and MSR-1 is required as the primary verifier to verify MSR-2 through CHAP. Then which of the following configurations may be required for MSR-2? (Multiple choice)

Question137: The hub (Hub) works in the ______ of the OSI reference model.

Question138: NAPT mainly converts the ______ information of the data packet? (multiple choice)

Question139: PPP has to go through a series of negotiation process before establishing the link, the correct negotiation sequence is ___. (Fill in the code of each step one by one, there can be no spaces in between, such as: ABC)

Question140: The IP address 112.1.1.1 corresponds to the network address of the natural classification network segment.

Question141: Compared with the standard subnet division, the biggest difference between the variable length subnet mask division (VLSM) and it is ______.

Question142: An empty-configured MSR router connects to the frame relay network through interface S1/0.
To achieve connectivity by configuring the frame relay sub-interface on this router, the correct description of the frame relay sub-interface is ______. (Multiple choice)

Question143: The command to configure the switch SWA to work in RSTP working mode is ______.

Question144: 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?

Question145: Normally, the router will fragment packets whose length is greater than the interface MTU.
In order to detect the line MTU, you can ping the destination address with the ______ parameter.