Mock Exam 3

Started on	Friday, 22 November 2019, 10:41 AM
State	Finished
Completed on	Friday, 22 November 2019, 10:45 AM
Time taken	4 mins 29 secs
Marks	18/60
Grade	30 out of 100
Question 1
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(Single Choice) STP calculates the overall cost of each path between a non-root bridge and a root bridge. What is a port on the non-root bridge called on the path that has the minimum overall cost?
Select one:
a. Root port
b. Queue port
c. Designated port
d. Common port
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The correct answer is: Root port
Question 2
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Which of following IPv6 address can be manually configured on the router
interface?
Select one or more:
a. ffll0:8a3c:9b/64
b. fe80 ·13dc:-1/64
c. 2001·12e3: 1b02::21/64
d. ::1/128
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The correct answers are: fe80 ·13dc:-1/64, 2001·12e3: 1b02::21/64
Question 3
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As shown,in private network,one Web server needs to provide HTIP service to public network users,so the network administrator needs to configure NAT on the gateway router RTA to achieve demand,so which of the following configuration can meet the needs?
46
Select one:
a. [RTA-Gigabitethernet0/0/1) nat server protocol tcp global 202.10.10.1www inside 192.168.1.1 8080
b. [RTA-Gigabitethernet0/0/1) nat server protocol tcp global 192.168.1.1www inside 202.10.10.1 8080
c. (RTA-Serial1/0/1) nat server protocol tcp global 202.10.10.1 www inside 192.168.1.1 8080
d. [RTA-Serial1/0/1) nat server protocol tcp global 192.168.1.1www inside 192.10.10.1 8080
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The correct answer is: (RTA-Serial1/0/1) nat server protocol tcp global 202.10.10.1 www inside 192.168.1.1 8080
Question 4
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In the PPP,when both ends of the communicating partiesj- detected physical link activated,will switch from the link unavailable phase to link established phase. In this phase, it mainly negotiate link parameters through () protocol.
Select one:
a. IP
b. DHCP
c. LCP
d. NCP
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The correct answer is: LCP
Question 5
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Refer to the graphic. An administrator has configed RIPv2 in the two routers shows in the fgure. What will happen
after configuring the following commands? (Choose two)
[RTA-Serial0/0/1]rip output
[RTA-rip-1]silent-interface s0/0/1
Select one or more:
a. RTA will have the route learned from the RTB
b. RTA will have no neighbor relationship with RTB
c. RTB will have no neighbor relationship with RTB
d. RTB will have the route learn from the RTA
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The correct answers are: RTA will have the route learned from the RTB, RTB will have no neighbor relationship with RTB
Question 6
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The network administrator wishes to forward data over an Eth-trunk, however associated member interfaces operate at different rates. In terms of the resulting behavior, which of the following is true?
Select one:
a. The Eth-Trunk will work normally.
b. The two switches will not be able to communicate.
c. The higher rate member interfaces may incur packet loss.
d. The lower rate member interfaces may incur packet loss.
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The correct answer is: The lower rate member interfaces may incur packet loss.
Question 7
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The standards for Frame Relay encapsulation that Huawei router supports include ( ).
Select one or more:
a. IETF
b. ANSI
c. Q.933a
d. Nonstandard
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The correct answers are: IETF, Nonstandard
Question 8
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within a private network hosts need to access the Internet, to achieve this demand ,, administrator should do the following on the edge of the network router What configuration? (Multiple choice)
Select one or more:
a. STP
b. default route
c. DHCP
d. NAT Easy IP
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The correct answers are: NAT Easy IP, default route
Question 9
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(Multiple Choice) The physical medium used by Ethernet include.
Select one or more:
a. Twisted pair cable
b. Coaxial cable
c. V.35 cable
d. Optical fiber
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The correct answers are: Coaxial cable, Twisted pair cable, Optical fiber
Question 10
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(Multiple Choice) Which of the following statements regarding the IP address 192.168.16.255/20 are correct?
Select one or more:
a. It's a private address
b. It belongs to the network segment 192.168.19.0
c. It's a network address
d. It's a public address
e. It's a broadcast address
f. It belongs to the network segment 192.168.16.0
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The correct answers are: It's a private address, It belongs to the network segment 192.168.16.0
Question 11
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Which of the following statements regarding traps in SNMP is correct?

Select one:
a. Traps are transmitted using TCP to destination port number 161.
b. Traps are transmitted using TCP to destination port number 162.
c. Traps are transmitted using UDP to destination port number 161.
d. Traps are transmitted using UDP to destination port number 162.
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The correct answer is: Traps are transmitted using UDP to destination port number 162.
Question 12
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Which of the following statements describes the network shown? (Choose two)
Select one or more:
a. There are 6 collision domains in the network.
b. There are 4 collision domains in the network.
c. There are 6 broadcast domains in the network.
d. There are 2 broadcast domains in the network.
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The correct answers are: There are 2 broadcast domains in the network., There are 4 collision domains in the network.
Question 13
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(Single Choice) A PC is connected to router's Ethernet port through its network interface card. What type of cable should be used to connect these two interfaces?
Select one:
a. Backup cable
b. Console cable
c. Straight cable
d. Cross cable
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The correct answer is: Cross cable
Question 14
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Two routers run on the PPP link,the administrator are configured OSPF single area on the two routers, and they have same Router ID,which of the following description is correct?
Select one:
a. VRP will prompt the Router ID conflict of two Router
b. the two routers will establish normal and complete neighbor relationship
c. the routers will not send the hello message to each other
d. the two routers will establish normal and complete adjacency relationship
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The correct answer is: VRP will prompt the Router ID conflict of two Router
Question 15
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The Network Management Station uses SNMP to manage devices, which SNMP message is sent when an SNMP registered abnormal event occurs?

Select one:
a. get-request
b. set-request
c. get-response
d. trap
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The correct answer is: trap
Question 16
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Refer to the graphic. RTA and RTB connect to a Frame Relay switch and use dynamic address mapping. The command “fr map ip 10.0.1.1 32” is then configured on RTB, without using the undo inarp command. What will occur as a result? (Choose two).
Select one or more:
a. 10.0.1.1 will stll be mapped to DLCI 31 on RTB
b. 10.0.1.1 will stll be mapped to DLCI 32 on RTB
c. DLCI 32 will be activated on RTB
d. RTB will be unable to communicate with RTA
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The correct answers are: RTB will be unable to communicate with RTA, 10.0.1.1 will stll be mapped to DLCI 32 on RTB
Question 17
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Which of the following authentication methods are supported for Telnet users? (Choose three)
Select one or more:
a. Password authentication
b. MD5 authentication
c. No authentication
d. AAA local authentication
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The correct answers are: Password authentication, AAA local authentication, No authentication
Question 18
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The main function is to solve 91.InARP protocol address of the terminal device of each virtual link connection, including the IP address and IPX address.
Select one:
True
False
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The correct answer is 'True'.
Question 19
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(Single Choice) How long can a fast Ethernet cable 100BaseTX or 100BaseT4 transmit a signal?
Select one:
a. 100m
b. 2000m
c. 550m
d. 1000m
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The correct answer is: 100m
Question 20
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(Multiple Choice) What functions does a router mainly provide?
Select one or more:
a. Discover possible routes.
b. Determine the information source.
c. Verify and maintain route information.
d. Check the destination address in a datagram.
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The correct answers are: Check the destination address in a datagram., Discover possible routes., Verify and maintain route information.
Question 21
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An access port on a switch generally connects to a port on a computer. Which of the following statements are true?
Select one or more:
a. An access port can belong to only one VLAN.
b. After receiving a tag packet, the switch forwards it directly.
c. The default VLAN of an access port is the VLAN where the port is located. You do not need to manually configure a default VLAN for an access port.
d. After receiving an untag packet, the access port attaches its PVID information to the packet.
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The correct answers are: The default VLAN of an access port is the VLAN where the port is located. You do not need to manually configure a default VLAN for an access port., An access port can belong to only one VLAN., After receiving an untag packet, the access port attaches its PVID information to the packet.
Question 22
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Which of ICMP timeout message will Tracert Diagnostic Tool record,thereby providing packet reaches the destination IP address to the user?
Select one:
a. Destination IP Address
b. Source IP address
c. Source port
d. Destination port
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The correct answer is: Source IP address
Question 23
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How is mapping performed on a DTE device in a Frame Relay network?
Select one:
a. The local DLCI number is mapped to a remote IP address.
b. The remote DLCI number is mapped to a remote IP address.
c. The local IP address is mapped to a remote DLCI number.
d. The local DLCI number is mapped to a local IP address.
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The correct answer is: The local DLCI number is mapped to a remote IP address.
Question 24
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(Multiple Choice) Which of the following statements about default routes are true?
Select one or more:
a. A route that can be configured manually.
b. A default route can be generated by using a dynamic routing protocol.
c. A default route is a kind of special static route.
d. A default route can be only configured manually by a network administrator.
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The correct answers are: A route that can be configured manually., A default route can be generated by using a dynamic routing protocol.
Question 25
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Under the Huawei AR router's command line interface,the role of the Save command is to save the current systemtime.
Select one:
True
False
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The correct answer is 'False'.
Question 26
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The host computer is restarted after obtaining from the DHCP server A to the IP address, the restart time which will send the following message to the DH
Select one:
a. DHCP OFFER
b. DHCP ACK
c. DHCP REQUEST
d. DHCP DISCOVER
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The correct answer is: DHCP REQUEST
Question 27
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After you enable the GRE keepalve function,GRE tunnel home terminal will periodically send keepalive packets every 1Os to the opposite end.
Select one:
True
False
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The correct answer is 'False'.
Question 28
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(Multiple Choice) Which of the following are functions of data link layer?
Select one or more:
a. Error checking
b. Routing
c. Physical address definition
d. Physical medium access
e. Network topology discovery
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The correct answers are: Physical address definition, Network topology discovery, Physical medium access, Error checking
Question 29
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presentation [A router runs OSPF and its interface Serial 0 with IP address 10.0.0.1/30 belongs to the backbone area, which of the following commands is used to enable OSPF at this interface?

Select one:
a. [Quidway-serial0]ospf area 0 enable
b. [Quidway-ospf -1-area-0.0.0.0]network 10.0.0.0
c. [Quidway-ospf -1]network 10.0.0.0 255.255.255.252
d. [Quidway-ospf -1-area-0.0.0.0]network 10.0.0.0 0.0.0.3
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The correct answer is: [Quidway-ospf -1-area-0.0.0.0]network 10.0.0.0 0.0.0.3
Question 30
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(Single Choice) An RARP request packet is sent by means of broadcast. How is an RARP Reply packet sent to save network resources?

Select one:
a. Broadcast
b. Anycast
c. Multicast
d. Unicast
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The correct answer is: Unicast
Question 31
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Which of the following statements regarding Autonomous System Boundary Router are correct?
Select one or more:
a. ABR can not be ASBR at the same time.
b. ASBR is the router that imports the routes calculated by other protocols into OSPF.
c. ASBR is not always on the border of AS but it can be set anywhere in the AS except Stub area.
d. ASBR must belong to two OSPF areas.
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The correct answers are: ASBR is the router that imports the routes calculated by other protocols into OSPF., ASBR is not always on the border of AS but it can be set anywhere in the AS except Stub area.
Question 32
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What does the number "30" in the following frame relay configuration command stand for?

[RTB-Serial0\]fr map ip 10.1.1.2 30

Select one:
a. Weight
b. Cost
c. DLCI
d. Subnet mask
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The correct answer is: DLCI
Question 33
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Switch-A and Switch-B are configured with ports in VLANs for R&D Department, Sales Department, Product Department, Financial Department, and HR Department. Each VLAN contains 20 users. In this case, how many subnets at least are required to provide routes between all VLANs?

Select one:
a. 50
b. 20
c. 100
d. 5
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The correct answer is: 5
Question 34
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(Single Choice) What do we call the routes in the routing table that have the same cost to the same destination?
Select one:
a. Equivalent routes
b. Multipath routes
c. Default routes
d. Sub-optimal routes
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The correct answer is: Equivalent routes
Question 35
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Which of the following technologies can allow a host with IP address 10.0.0.1 to access the internet?

Select one:
a. NAT
b. Dynamic route
c. Route import
d. Static route
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The correct answer is: NAT
Question 36
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If Frame Relay implements dynamic address mapping for the PVC, which protocol will be used?
Select one:
a. InARP protocol
b. RARP protocol.
c. LMI protocol.
d. ARP protocol.
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The correct answer is: InARP protocol
Question 37
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When a link aggregation technology for interconnection between the two switches, the member ports which need to satisfy the following conditions? (Multiple choice)
Select one or more:
a. Equal to the number of physical ports connected to both ends of
b. Physical port connected to both ends of the same number of physical
c. Consistent with the physical port connected to both ends of the optical module type using
d. Consistent with the physical port connected to both ends of the rate
e. Consistent with the physical port connected to both ends of the duplex mode
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The correct answers are: Equal to the number of physical ports connected to both ends of, Consistent with the physical port connected to both ends of the rate, Consistent with the physical port connected to both ends of the duplex mode
Question 38
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(Single Choice) Which of the following statements about IP host address is true?
Select one:
a. Host portion can be either all one or all zero
b. Network portion can be neither all one nor all zero
c. Network portion can be either all one or all zero
d. IP host address can be either all one or all zero
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The correct answer is: Network portion can be neither all one nor all zero
Question 39
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An ARP request is sent by host A to obtain the destination MAC address of host D, Which statement is true about regarding the ARP reply?
Select one:
a. The destination MAC address of this frame is the MAC address of Switch A
b. The destination MAC address of this frame is the MAC address of Host A
c. The destination IP address of this packet is a broadcast IP address.
d. The destination IP address of this packet is the VLANIF1 IP address of Switch A
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The correct answer is: The destination MAC address of this frame is the MAC address of Host A
Question 40
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To provide the information about the IP addresses that a user packet traverses along the path to the destination, which of the following does Tracert record in each expired ICMP TTL packet?
Select one:
a. Source port
b. Destination address
c. Source address
d. Destination port
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The correct answer is: Source address
Question 41
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(Single Choice) Which of the following is the feature of IP protocol?
Select one:
a. Reliable and connectionless oriented
b. Reliable and connection oriented
c. Unreliable and connection oriented
d. Unreliable and connectionless oriented
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The correct answer is: Unreliable and connectionless oriented
Question 42
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(Single Choice) The TCP protocol assigns a source port No. to each application. How many bytes does the source port No. in the TCP packet header consist of?
Select one:
a. 8
b. 1
c. 4
d. 2
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The correct answer is: 2
Question 43
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In the PPP protocol, which of the following encryption algorithms is used by CHAP?
Select one:
a. None
b. MD5
c. DES
d. AES
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The correct answer is: MD5
Question 44
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The network administrator attempts to add interface G0/0/1 on Switch A to Eth-trunk 1, however the command fails. Which of the following may cause this?
Select one or more:
a. The interface is operating in half-duplex mode.
b. The interface is already associated with another Eth-trunk.
c. The interface is an access port.
d. The interface has been shutdown.
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The correct answers are: The interface is already associated with another Eth-trunk., The interface is an access port.
Question 45
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Which of the following are the features of the default VLAN setting in a switch configuration?
Select one or more:
a. The default VLAN cannot be deleted manually.
b. By default, the ports on all switches are member ports of a default VLAN.
c. The IP address configured for a switch is applied only to a member port in the default VLAN.
d. A default VLAN must be created before a port is allocated to a VLAN.
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The correct answers are: The default VLAN cannot be deleted manually., By default, the ports on all switches are member ports of a default VLAN.
Question 46
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(Multiple Choice) What functions does VRP provide?
Select one or more:
a. Provides a unified user interface and a unified management window.
b. Provides the functions of a control plane.
c. Defines interfaces of a forwarding plane.
d. Blocks communication between a forwarding plane and the VRP control plane.
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The correct answers are: Provides a unified user interface and a unified management window., Provides the functions of a control plane., Defines interfaces of a forwarding plane.
Question 47
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As shown,the switch uses the default parameters to run STP,which of the following ports will be elected to specified port?
44
Select one:
a. HUB's E0/0/1 port
b. switch A G0/0/2 port
c. HUB's E0/0/2 port
d. switch A G0/0/1 port
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The correct answer is: switch A G0/0/1 port
Question 48
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In AR router created on certification plan,authorization scheme ,accounting scheme, HWTACACS or RADIUS server template to the domain only after the application to take effect.
Select one:
True
False
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The correct answer is 'True'.
Question 49
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(Single Choice) In a complete IP network, which of the following networks does a Layer 2 network under the service access control point belong to?
Select one:
a. Access network
b. Metropolitan area network (MAN)
c. Core network
d. Backbone network
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The correct answer is: Access network
Question 50
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(Single Choice) In the OSI reference model, one layer is used to establish end-to-end connections between hosts and checks for bit errors before data is transmitted or retransmitted. Which of the following layers stands for this layer?
Select one:
a. Transport Layer
b. Data Link Layer
c. Network Layer
d. Physical Layer
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The correct answer is: Transport Layer
Question 51
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(Single Choice) Which of the following is the correct sequence about the data encapsulation process?
Select one:
a. Bit ->Segment ->Packet->Frame->Data
b. Segment->Packet->Frame->Bit->Data
c. Data->Segment->Packet->Frame->Bit
d. Data->Packet->Segment ->Frame->Bit
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The correct answer is: Data->Segment->Packet->Frame->Bit
Question 52
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Of all the VLAN grouping methods, the grouping method by IP address is called ( ) VLAN.

Select one:
a. Port-based
b. MAC address-based
c. Route-based
d. Policy-based
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The correct answer is: Route-based
Question 53
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By default, RIPv2 sends packet by means of ( ).

Select one:
a. Multicast
b. Multicast and broadcast
c. Broadcast
d. Unicast
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The correct answer is: Multicast
Question 54
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(Multiple Choice) Which of the following devices operate at data link layer?
Select one or more:
a. Firewall
b. Switch
c. Router
d. Hub
e. Bridge
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The correct answers are: Bridge, Switch
Question 55
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(Single Choice) Which of the following multicast address represents all routers of the subnet?
Select one:
a. 224.0.0.3
b. 224.0.0.1
c. 224.0.0.9
d. 224.0.0.2
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The correct answer is: 224.0.0.2
Question 56
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Which of the following statements regarding routing loops in RIP is correct?

Select one:
a. Maximum hop count mechanism can solve the problem caused by routing loop.
b. Although Holddown mechanism results in slow convergence, it can completely prevent the routing loop.
c. Distance Vector algorithm can calculate the shortest path to the destination according to the given topology.
d. Split horizon can prevent the routing loop between two neighboring routers only.
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The correct answer is: Split horizon can prevent the routing loop between two neighboring routers only.
Question 57
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Destination/Mask protocol pre Cost Nexthop Interface
9.0.0.0/8 OSPF 10 50 1.1.1.1 Serial 1/0/0
9.1.0.0/16 RIP 100 5 2.2.2.2 Ethernet 0/0/1
Refer to the graphic. Which of the following statements is correct when this router forwards the packet to the destination host 9.1.4.5?
Select one:
a. The router selects the second entry to match the destination address of the packet because the router will match the most specific address.
b. The router selects the second entry to match the destination address of the packet because the outgoing interface is an Ethernet interface. The forwarding speed of an Ethernet interface is faster than the forwarding speed of a serial interface
c. The router selects the first entry to match the destination address of the packet because the preference of OSPF is higher than the preference of RIP.
d. The router selects the second entry to match the destination address of the packet because the cost of RIP is lower than that of OSPF.
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The correct answer is: The router selects the second entry to match the destination address of the packet because the router will match the most specific address.
Question 58
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RTA and RTB have established a GRE tunnel, but only RTA has enabled the keepalive function. When RTB receive a keepalive message from RTA, how will RTB respond?

Select one:
a. RTB will send a keepalive reply and begin to actively send keepalive messages.
b. RTB will send a keepalive in response.
c. RTB willl record receipt of the keepalive message but won’t reply
d. RTB will discard the keepalive message.
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The correct answer is: RTB will send a keepalive in response.
Question 59
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(Single Choice) What does the distance vector routing protocol focus on according to the discovered routes and calculated routes?
Select one:
a. The address of the next hop specified manually
b. Whether the egress port on the route belongs to a port aggregation group
c. The number of hops on between the router and the destination
d. Link bandwidth resource information
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The correct answer is: The number of hops on between the router and the destination
Question 60
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(Single Choice) POP (Post Office Protocol) is used for receiving E-mail. Which TCP port numbers does it use by default?
Select one:
a. 23
b. 21
c. 53
d. 110
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The correct answer is: 110