Mock Exam 1

Started on	Friday, 22 November 2019, 9:50 AM
State	Finished
Completed on	Friday, 22 November 2019, 10:22 AM
Time taken	32 mins 17 secs
Grade	31.5 out of 100.0
Question 1
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In a frame relay network, DLCI is only the identifier of a virtual circuit under an interface. It must be globally unique when planning and deploying.

Select one:
True
False
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The correct answer is 'False'.
Question 2
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The rule to create VLAN on Huawei switches is that you can't create VLAN 4095, and you can not delete VLAN 1.
Select one:
True
False
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The correct answer is 'True'.
Question 3
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A port in the discarding state of RSTP, although it will discard the received data frame, but it can receive it according to the port.

Select one:
True
False
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The correct answer is 'False'.
Question 4
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When a NAT uses a dynamic address pool, the addresses in the address pool can be reused, that is, the same IP is mapped to multiple intranet IPs at the same time.

Select one:
True
False
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The correct answer is 'False'.
Question 5
Correct
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Tracert in Huawei router diagnostic tool use UDP encapsulation tracking data.
Select one:
True
False
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The correct answer is 'True'.
Question 6
Incorrect
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Root bridges provide root ports and designated ports.
Select one:
True
False
Feedback
The correct answer is 'False'.
Question 7
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STP in elections based on the root switch is to compare priority of the switch, while in RSTP, the switch will also compare the priority and the MAC site.
Select one:
True
False
Feedback
The correct answer is 'False'.
Question 8
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OSPF can generate a loop-free shortest route tree by using a routing protocol algorithm. Thus, the OSPF routing protocol has no loop problem.

Select one:
True
False
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The correct answer is 'True'.
Question 9
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Both the alternate port and the backup port in RSTP cannot forward user traffic, but can receive, process, and send BPDUs.

Select one:
True
False
Feedback
The correct answer is 'False'.
Question 10
Correct
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Trunk port can send both labeled data frames, but also can send untagged data frames
Select one:
True
False
Feedback
The correct answer is 'True'.
Question 11
Correct
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The ACL of the AR G3 series router supports two matching sequences: configuration order and automatic sorting.

Select one:
True
False
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The correct answer is 'True'.
Question 12
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The authentication scheme, authorization scheme, accounting scheme, HWTACACS, or RADIUS server template created on the AR router. It will not take effect until it is applied under the domain.

Select one:
True
False
Feedback
The correct answer is 'True'.
Question 13
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The following two configuration commands can be used to implement the router backup and backup of the router RTA to the same destination 10.1.1.0:

[RTA]ip route-static 10.1.1.0 24 12.1.1.1 permanent

[RTA]ip route-static 10.1.1.0 24 13.1.1.1

Select one:
True
False
Feedback
The correct answer is 'False'.
Question 14
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Access port can only send and receive Untagged frames, when received with Tagged data frames will be directly discarded.
Select one:
True
False
Feedback
The correct answer is 'False'.
Question 15
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An access port can only send and receive untagged frames. When receiving a data frame with a tag, it will directly discard it.

Select one:
True
False
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The correct answer is 'False'.
Question 16
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There may be “multiple” paths between a non-root bridge and a root bridge. Each of the paths has its own total cost, which is the sum of the port costs of all egress ports on the path.
Select one:
True
False
Feedback
The correct answer is 'True'.
Question 17
Correct
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When a router forwards a packet, if no match corresponding to specific routes and no default route, the packet is discarded directly.
Select one:
True
False
Feedback
The correct answer is 'True'.
Question 18
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The ACL does not filter the traffic that the device itself generates to access other devices. It only filters the forwarded traffic. The forwarded traffic includes other device access.

Select one:
True
False
Feedback
The correct answer is 'True'.
Question 19
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ARP protocol can resolve the destination MAC address based on the destination IP address, so as to realize the mapping of the link layer address and IP address.
Select one:
True
False
Feedback
The correct answer is 'True'.
Question 20
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NAPT distinguishes the IP addresses of different users by the protocol number in TCP or UDP or IP packets.

Select one:
True
False
Feedback
The correct answer is 'False'.
Question 21
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Which of the following statements regarding layer-2 switch is incorrect?

Select one:
a. Layer-3 header is modified before the received packet is transmitted
b. Learn MAC address automatically
c. Layer-2 header is modified before the received packet is transmitted
d. Layer-2 LAN switch operates at data link layer
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Your answer is correct.
The correct answer is: Layer-3 header is modified before the received packet is transmitted
Question 22
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The network address of the IP 190.233.27.13/16 is

Select one:
a. 190.233.0.0
b. 190.233.27.0
c. 190.233.27.1
d. 190.0.0.0
Feedback
Your answer is incorrect.
The correct answer is: 190.233.0.0
Question 23
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Which of the following statements regarding the routing loop in OSPF is correct?

Select one:
a. Routing loop is eliminated within an OSPF area
b. No routing loop exists outside the OSPF autonomous system
c. Routing loop is not eliminated within an OSPF Autonomous Systems
d. Routing loop is not eliminated between two OSPF area
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Your answer is incorrect.
The correct answer is: Routing loop is eliminated within an OSPF area
Question 24
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(Single Choice) What is the function of ARP?
Select one:
a. Map port number to IP address
b. Map MAC address to IP address
c. Broadcast IP address
d. Map IP address to Mac address
Feedback
The correct answer is: Map IP address to Mac address
Question 25
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<Huawei>display startup

MainBoard:

Startup system software: sd1:/ar2220-v200r003c00spc200.cc

Next startup system software: sd1:/ar2220-v200r003c00spc200.cc

Backup system software for next startup: null

Startup saved-configuration file: null

Next startup saved-configuration file: null

Startup license file: null

Next startup license file: null

Startup patch package: null

Next startup patch package: null

Startup voice-files: null

Next startup voice-files: null

Refer to the display output. Which statement is false?

Select one:
a. The current configuration file has not been saved.
b. The current startup system software is ar2220-v200r003c00spc200.cc
c. The next startup system software cannot be changed.
d. The next startup system software can be changed by using the “startup system software
<startup-softwarename>.cc” command.
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Your answer is incorrect.
The correct answer is: The next startup system software cannot be changed.
Question 26
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In a network supporting IPv6, OSPF no longer supports which feature?

Select one:
a. multiple areas
b. Router-ID
c. authentication
d. multicast updates
Feedback
Your answer is incorrect.
The correct answer is: authentication
Question 27
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(Single Choice) What's the broadcast address for network segment 201.1.0.0/21?
Select one:
a. 201.1.7.255
b. 201.1.0.255
c. 201.1.1.255
d. 201.0.0.255
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The correct answer is: 201.1.7.255
Question 28
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The users who log on the router through Telnet are not permitted to configure IP address. What is the possible reason?

Select one:
a. Communication failures occur between the user and the router.
b. The authentication mode of Telnet is set incorrectly.
c. Privilege level of Telnet is set incorrectly.
d. SNMP parameters are set incorrectly.
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Your answer is incorrect.
The correct answer is: Privilege level of Telnet is set incorrectly.
Question 29
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The administrator has configured an IP address for Host A and Host B, but had forgotten to configure a default gateway. What effect will this have on the hosts?
Select one:
a. Neither host will be affected, and therefore will be able to communicate with the peer.
b. Host A will be unable to connect to the router’s G0/0/0 interface.
c. Hosts will be unable to communicate unless arp-proxy is enabled on the router.
d. The host will be unable to reach neither the local nor remote network destinations.
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The correct answer is: Hosts will be unable to communicate unless arp-proxy is enabled on the router.
Question 30
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Which address does 192.168.1.127/25 represent?
Select one:
a. Host
b. network
c. multicast
d. Broadcast
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The correct answer is: Broadcast
Question 31
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When STP is running on Huawei Sx7 series switches, the priority of the switch is () by default.

Select one:
a. 32768
b. 32764
c. 32769
d. 32765
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Your answer is incorrect.
The correct answer is: 32768
Question 32
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Which description is correct about this command?
ip route-static 10.0.12.0 255.255.255.0 192.168.1.1
Select one:
a. This command is configured with a route to reach the 192.168.1.1network
b. This command is configured with a route to reach the 10 0.12.0 network
c. The route priority is 100
d. If the router to learn the route and the route to the same destination network through other protocols,routers will prefer this route
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The correct answer is: This command is configured with a route to reach the 10 0.12.0 network
Question 33
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(Single Choice) Which of the following protocols provides connection oriented transmission service?
Select one:
a. IP
b. IPv6
c. TCP
d. UDP
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The correct answer is: TCP
Question 34
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An administrator configures OSPF on a router, but it doesn't configure the loopback interface on the router. Which description about the Router ID is correct?
Select one:
a. The minimum IP address of the router's physical interface will become Router ID
b. The maximum IP address of the router's physical interface will become Router ID
c. The IP address of the router management interface will become Router ID
d. The router's priority will be Router ID
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The correct answer is: The maximum IP address of the router's physical interface will become Router ID
Question 35
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A server is linked to port interface G0/0/1 of a switch. The administrator wishes to allow only this server to be linked to this interface on the switch. Which method can be used to achieve this?

Select one:
a. Configure a static MAC address binding entry of the server’s MAC address and the interface in the switch.
b. Configure the default gateway of the switch to be the same as the server’s IP address.
c. It is not possible to enable a single device to be associated with an interface.
d. Configure a static ARP entry using the server’s IP address and MAC address in the switch.
Feedback
Your answer is incorrect.
The correct answer is: Configure a static MAC address binding entry of the server’s MAC address and the interface in the switch.
Question 36
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(Single Choice) Which part of the IP address is used for sub-netting?
Select one:
a. Network address
b. Host address
c. Subnet network segment
d. Default subnet mask
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The correct answer is: Host address
Question 37
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(Single Choice) Which class does IP address 190.233.27.13 belong to?
Select one:
a. A
b. B
c. C
d. D
Feedback
The correct answer is: B
Question 38
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(Single Choice) Which of the following is the feature of IP protocol?
Select one:
a. Reliable and connectionless oriented
b. Unreliable and connectionless oriented
c. Reliable and connection oriented
d. Unreliable and connection oriented
Feedback
The correct answer is: Unreliable and connectionless oriented
Question 39
Correct
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(Single Choice) What is the binary format for subnet mask 255.255.192.0?
Select one:
a. 11111111 11110000 00000000 00000000
b. 11111111 11111111 00001111 00000000
c. 11111111 11111111 11000000 00000000
d. 11111111 11111111 11111111 00000000
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The correct answer is: 11111111 11111111 11000000 00000000
Question 40
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STP uses ___ timer to prevent from temporary loop when the link is fault?

Select one:
a.  Hello Time
b. Message Age
c. Max Age
d. Forward Delay
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Your answer is incorrect.
The correct answer is: Forward Delay
Question 41
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Which of the following types can ICMP packets be classified into?

Select one or more:
a. ICMP transport packet
b. ICMP error reporting packet
c. ICMP query packet
d. ICMP application packet
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Your answer is incorrect.
The correct answers are: ICMP error reporting packet, ICMP query packet
Question 42
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(Multiple Choice) On Huawei VRP platform, which of the following can be used to invoke the history command saved by the command line interface?

Select one or more:
a. Up cursor key < >
b. Left cursor key < >
c. Ctrl+P
d. Ctrl+U
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The correct answers are: Up cursor key < >, Ctrl+P
Question 43
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(Multiple Choice) Which of the following descriptions about STP are incorrect?
Select one or more:
a. A layer-2 switching network can have only one designated switch
b. All the ports of the root switch are root port
c. All the ports of the root switch are designated port
d. The switch with the smallest priority value is elected as non-root switch
Feedback
The correct answers are: A layer-2 switching network can have only one designated switch, All the ports of the root switch are root port, The switch with the smallest priority value is elected as non-root switch
Question 44
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TCP is a connection oriented and reliable transport layer protocol. Which of the following are used to ensure the transmission reliability?

Select one or more:
a. Source quench messages
b. Acknowledgement
c. Retransmit
d. Buffering
Feedback
Your answer is incorrect.
The correct answers are: Acknowledgement , Retransmit
Question 45
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The following description of the OSPF area is correct (). (Multiple choice)
Select one or more:
a. Before configuring the OSPF area, you must configure the ip address for the loopback interface of the router
b. The area numbers range from 0.0.0.0 to 255.255.255.255
c. backbone area number can not be 2
d. All networks should be declared in area 0
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The correct answers are: The area numbers range from 0.0.0.0 to 255.255.255.255, backbone area number can not be 2
Question 46
Partially correct
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Which of the following are the functions of STP in switched network?

Select one or more:
a. Eliminate the possible loops by blocking the redundant paths
b. Activate the redundant backup path when the active path becomes faulty
c.  Improve bridge network availability by providing physical path redundancy
d.  Improve bridge network availability by providing logical path redundancy
Feedback
Your answer is partially correct.
You have correctly selected 2.
The correct answers are: Eliminate the possible loops by blocking the redundant paths, Activate the redundant backup path when the active path becomes faulty,  Improve bridge network availability by providing physical path redundancy
Question 47
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Which of the following description is correct? ( ) (Multiple Choice)
Select one or more:
a. the next hop routing tables are redundant, with the interface can guide the packet forwarding
b. through different routing protocol obtained routing its priority is not the same
c. different routing protocol defined by the metrics values comparable
d. different routing protocol defined by the metrics values not comparable
Feedback
The correct answers are: through different routing protocol obtained routing its priority is not the same, different routing protocol defined by the metrics values not comparable
Question 48
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Which of the following statements regarding OSPF are correct?

Select one or more:
a. OSPF calculates the shortest path tree based on the link sate information and OSPF itself will not generate the routing loop
b. Supporting authentication of the messages and this enhanced the security
c. OSPF is an EGP
d.  Supporting ECMP (Equal Cost Multi-Path)
Feedback
Your answer is incorrect.
The correct answers are: OSPF calculates the shortest path tree based on the link sate information and OSPF itself will not generate the routing loop, Supporting authentication of the messages and this enhanced the security,  Supporting ECMP (Equal Cost Multi-Path)
Question 49
Partially correct
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A DHCP server in the enterprise network is being used to allocated IP addresses to hosts. An administrator discovers however that some hosts are obtaining IP addresses outside of the scope of the DHCP server’s address pool. What are the possible reasons for this?

Select one or more:
a. Another DHCP server exists in the network and is allocating IP addresses to hosts that happen to be
within a closer proximity than the authorized DHCP server
b. The hosts were unable to discover a DHCP server and therefore generated their own address in the
169.254.0.0 address range.
c. The hosts were unable to discover a DHCP server and therefore generated their own address in the
127.254.0.0 address range.
d. All addresses from the DHCP pool have been assigned
Feedback
Your answer is partially correct.
You have correctly selected 2.
The correct answers are: Another DHCP server exists in the network and is allocating IP addresses to hosts that happen to be
within a closer proximity than the authorized DHCP server, The hosts were unable to discover a DHCP server and therefore generated their own address in the
169.254.0.0 address range., All addresses from the DHCP pool have been assigned
Question 50
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Which of the following are the advantages of RSTP compared with STP?

Select one or more:
a. If the designated port is connected with P2P link, it can make a handshake with the connected bridge and enter the forwarding state immediately after it receives the response.
b. If the designated port is connected with P2MP link, it can make a handshake with the connected bridge and enter the forwarding state immediately after it receives the response.
c. A new root port is elected on the non-root switch and the previous old root port is no longer in forwarding state. Moreover the designated port of the segment which connects with the new root port already starts to forward the data. In this case, the new root port can enter forwarding state immediately.
d. Once a port of the switch which is configured as edge port has been enabled, it will become designated port immediately and transit to forwarding state.
Feedback
Your answer is incorrect.
The correct answers are: If the designated port is connected with P2P link, it can make a handshake with the connected bridge and enter the forwarding state immediately after it receives the response., A new root port is elected on the non-root switch and the previous old root port is no longer in forwarding state. Moreover the designated port of the segment which connects with the new root port already starts to forward the data. In this case, the new root port can enter forwarding state immediately. , Once a port of the switch which is configured as edge port has been enabled, it will become designated port immediately and transit to forwarding state.
Question 51
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Which of the following is a routing protocol? (Multiple choice)
Select one or more:
a. IP
b. OSPF
c. BGP
d. IPX
Feedback
The correct answers are: OSPF, BGP
Question 52
Partially correct
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Which function of the OSPF hello message as follows? (Multiple Choice)
Select one or more:
a. the neighbors found
b. release Router ID.Router Priority and so on parameters information
c. maintain neighbor relations
d. synchronizing router LSDB
Feedback
The correct answers are: the neighbors found, release Router ID.Router Priority and so on parameters information, maintain neighbor relations
Question 53
Correct
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A network administrator uses the ping command to check for points of failure in the network. Which protocols will be used during this process?

Select one or more:
a. ICMP
b. TCP
c. ARP
d. UDP
Feedback
Your answer is correct.
The correct answers are: ICMP, ARP
Question 54
Partially correct
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Which of the following descriptions about STP are correct?

Select one or more:
a. All the ports of the root switch are root port
b. All the ports of the root switch are designated port
c. The switch with the smallest priority value is elected as the root switch
d. A network can have only one root switch
Feedback
Your answer is partially correct.
You have correctly selected 2.
The correct answers are: All the ports of the root switch are designated port, The switch with the smallest priority value is elected as the root switch, A network can have only one root switch
Question 55
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The administrator wishes to update the configuration file of an AR2200 router using a USB cable. How can this be achieved?

Select one or more:
a. The administrator should connect the USB cable between the terminal and the mini USB port of the
AR2200 router.
b. The administrator should connect the USB cable between the terminal and the USB port of the AR2200
router.
c. The AR2200 router cannot support configuration updates through a USB cable.
d. The administrator should install the mini USB drivers on the terminal after connecting the USB.
Feedback
Your answer is incorrect.
The correct answers are: The administrator should connect the USB cable between the terminal and the mini USB port of the
AR2200 router., The administrator should install the mini USB drivers on the terminal after connecting the USB.
Question 56
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Which of the following statements about an OSPF neighboring routers are true?
Select one or more:
a. An OSPF interface broadcasts Hello packets to discover a neighbor.
b. After a router receives a Hello packet from the peer router, it becomes the neighbor of the peer router.
c. After an OSPF router receives a Hello packet from the peer OSPF router, it checks the parameters in the packet. If the parameters in the packet from the peer OSPF router are consistent with the parameters of this OSPF router, the two OSPF routers become neighbors of each other.
d. Neighbor discovery is equivalent to adjacency establishment.
Feedback
The correct answers are: An OSPF interface broadcasts Hello packets to discover a neighbor., After an OSPF router receives a Hello packet from the peer OSPF router, it checks the parameters in the packet. If the parameters in the packet from the peer OSPF router are consistent with the parameters of this OSPF router, the two OSPF routers become neighbors of each other.
Question 57
Partially correct
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Which of the following statements regarding the verification of IP connectivity are false?

Select one or more:
a. The ping 127.0.0.1 command can be used to check whether the network cable is correctly inserted into
the host’s Ethernet port.
b. The ping command with the host IP address as the destination can be used to verify that the TCP/IP
protocol suite is functioning correctly.
c. The ping command can be used to verify connectivity between the host and the local gateway.
d. The command “ipconfig /release” can be used to check connectivity problems between the host and the
local gateway.
Feedback
Your answer is partially correct.
You have correctly selected 2.
The correct answers are: The ping 127.0.0.1 command can be used to check whether the network cable is correctly inserted into
the host’s Ethernet port., The ping command with the host IP address as the destination can be used to verify that the TCP/IP
protocol suite is functioning correctly., The command “ipconfig /release” can be used to check connectivity problems between the host and the
local gateway.
Question 58
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Which of the following problems may arise when routing a loop? (Multiple choice)
Select one or more:
a. The packet is delivered endlessly
b. router CPU consumption increases
c. Router memory consumption increases
d. The destination IP address of the packet is constantly being modified
e. The number of bytes of data packet is getting bigger and bigger
Feedback
The correct answers are: router CPU consumption increases, Router memory consumption increases
Question 59
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(Multiple Choice) Which of the following statements about Ping and Tracert are true?
Select one or more:
a. Both Ping and Tracert can be used to test network connectivity.
b. Ping can be used to specify the source IP address of a packet.
c. Ping is often used to obtain the path for forwarding a datagram.
d. Tracert can be used to determine a faulty point.
Feedback
The correct answers are: Both Ping and Tracert can be used to test network connectivity., Ping can be used to specify the source IP address of a packet., Tracert can be used to determine a faulty point.
Question 60
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Each OSPF router floods LSAs to advertise link status information, including ( ).
Select one or more:
a. Ports
b. Available neighbors
c. Information about adjacent network segments
d. Local link status information
Feedback
The correct answers are: Available neighbors, Information about adjacent network segments, Local link status information