Download CCNA Cisco Certified Network Associate CCNA (v3-0).selftestengine.200-125.1e.571q.vcex

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Exam	CCNA Cisco Certified Network Associate CCNA (v3.0)
Number	200-125
File Name	CCNA Cisco Certified Network Associate CCNA (v3-0).selftestengine.200-125.1e.571q.vcex
Size	26.56 Mb
Posted	December 27, 2018
Downloads	219

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Demo Questions

Question 1

Which IPv6 address is the all-router multicast group?

A: FF02::1
B: FF02::2
C: FF02::3
D: FF02::4

Correct Answer: B

Well-known IPv6 multicast addresses:
Address
Description
ff02::1
All nodes on the local network segment
ff02::2
All routers on the local network segment

Question 2

Refer to the exhibit. Which address range efficiently summarizes the routing table of the addresses for router Main?

A: 172.16.0.0./21
B: 172.16.0.0./20
C: 172.16.0.0./16
D: 172.16.0.0/18

Correct Answer: B

The 172.16.0.0./20 network is the best option as it includes all networks from 172.16.0.0 - 172.16.16.0 and does it more efficiently than the /16 and /18 subnets. The /21 subnet will not include all the other subnets in this one single summarized address.

Question 3

Which IPv6 address is valid?

A: 2001:0db8:0000:130F:0000:0000:08GC:140B
B: 2001:0db8:0:130H::87C:140B
C: 2031::130F::9C0:876A:130B
D: 2031:0:130F::9C0:876A:130B

Correct Answer: D

An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits (two octets). The groups are separated by colons (:). An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. The leading 0's in a group can be collapsed using ::, but this can only be done once in an IP address.

Question 4

Which command can you use to manually assign a static IPv6 address to a router interface?

A: ipv6 autoconfig 2001:db8:2222:7272::72/64
B: ipv6 address 2001:db8:2222:7272::72/64
C: ipv6 address PREFIX_1 ::1/64
D: ipv6 autoconfig

Correct Answer: B

To assign an IPv6 address to an interface, use the "ipv6 address" command and specify the IP address you wish to use.

Question 5

Which of these represents an IPv6 link-local address?

A: FE80::380e:611a:e14f:3d69
B: FE81::280f:512b:e14f:3d69
C: FEFE:0345:5f1b::e14d:3d69
D: FE08::280e:611:a:f14f:3d69

Correct Answer: A

In the Internet Protocol Version 6 (IPv6), the address block fe80::/10 has been reserved for link- local unicast addressing. The actual link local addresses are assigned with the prefix fe80::/64. They may be assigned by automatic (stateless) or stateful (e.g. manual) mechanisms.

Question 6

Refer to the exhibit. What is the meaning of the output MTU 1500 bytes?

A: The maximum number of bytes that can traverse this interface per second is 1500.
B: The minimum segment size that can traverse this interface is 1500 bytes.
C: The maximum segment size that can traverse this interface is 1500 bytes.
D: The minimum packet size that can traverse this interface is 1500 bytes.
E: The maximum packet size that can traverse this interface is 1500 bytes.
F: The maximum frame size that can traverse this interface is 1500 bytes.

Correct Answer: E

The Maximum Transmission Unit (MTU) defines the maximum Layer 3 packet (in bytes) that the layer can pass onwards.

Question 7

On a corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs.
What is needed to allow communication between the VLANs?

A: a router with subinterfaces configured on the physical interface that is connected to the switch
B: a router with an IP address on the physical interface connected to the switch
C: a switch with an access link that is configured between the switches
D: a switch with a trunk link that is configured between the switches

Correct Answer: A

Different VLANs can't communicate with each other, they can communicate with the help of Layer3 router. Hence, it is needed to connect a router to a switch, then make the sub-interface on the router to connect to the switch, establishing Trunking links to achieve communications of devices which belong to different VLANs.
When using VLANs in networks that have multiple interconnected switches, you need to use VLAN trunking between the switches. With VLAN trunking, the switches tag each frame sent between switches so that the receiving switch knows to what VLAN the frame belongs. End user devices connect to switch ports that provide simple connectivity to a single VLAN each. The attached devices are unaware of any VLAN structure.
By default, only hosts that are members of the same VLAN can communicate. To change this and allow inter-VLAN communication, you need a router or a layer 3 switch. Here is the example of configuring the router for inter-vlan communication RouterA(config)#int f0/0.1
RouterA(config-subif)#encapsulation ?
dot1Q IEEE 802.1Q Virtual LAN
RouterA(config-subif)#encapsulation dot1Q or isl VLAN ID RouterA(config-subif)# ip address x.x.x.x y.y.y.y

Question 8

Users on the 172.17.22.0 network cannot reach the server located on the 172.31.5.0 network. The network administrator connected to router Coffee via the console port, issued the show ip route command, and was able to ping the server.
Based on the output of the show ip route command and the topology shown in the graphic, what is the cause of the failure?

A: The network has not fully converged.
B: IP routing is not enabled.
C: A static route is configured incorrectly.
D: The FastEthernet interface on Coffee is disabled.
E: The neighbor relationship table is not correctly updated.
F: The routing table on Coffee has not updated.

Correct Answer: C

The default route or the static route was configured with incorrect next-hop ip address 172.19.22.2 The correct ip address will be 172.18.22.2 to reach server located on 172.31.5.0 network. Ip route 0.0.0.0 0.0.0.0 172.18.22.2

Question 9

Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true? (Choose two.)

A: Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.
B: Router C will use ICMP to inform Router B that Host 2 cannot be reached.
C: Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.
D: Router C will send a Destination Unreachable message type.
E: Router C will send a Router Selection message type.
F: Router C will send a Source Quench message type.

Correct Answer: AD

Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Router C will send ICMP packets to inform Host 1 that Host 2 cannot be reached.

Question 10

Refer to the exhibit. A network technician is asked to design a small network with redundancy. The exhibit represents this design, with all hosts configured in the same VLAN. What conclusions can be made about this design?

A: This design will function as intended.
B: Spanning-tree will need to be used.
C: The router will not accept the addressing scheme.
D: The connection between switches should be a trunk.
E: The router interfaces must be encapsulated with the 802.1Q protocol.

Correct Answer: C

Each interface on a router must be in a different network. If two interfaces are in the same network, the router will not accept it and show error when the administrator assigns it.

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