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Jan 2019 updated: ccna 200 125

Exambible offers free demo for cisco 200 125 exam. “CCNA Cisco Certified Network Associate CCNA (v3.0)”, also known as ccna 200 125 exam, is a Cisco Certification. This set of posts, Passing the Cisco ccna 200 125 study guide exam, will help you answer those questions. The ccna 200 125 pdf Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco ccna 200 125 torrent exams and revised by experts!

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New Cisco 200-125 Exam Dumps Collection (Question 2 – Question 11)

New Questions 2

Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?

A. BackboneFast

B. UplinkFast

C. Root Guard

D. BPDU Guard

E. BPDU Filter

Answer: D

Explanation:

We only enable PortFast feature on access ports (ports connected to end stations). But if someone does not know he can accidentally plug that port to another switch and a loop may occur when BPDUs are being transmitted and received on these ports.

With BPDU Guard, when a PortFast receives a BPDU, it will be shut down to prevent a loop.

New Questions 3

Which two are features of IPv6? (Choose two.)

A. anycast

B. broadcast

C. multicast

D. podcast

E. allcast

Answer: A,C

Explanation:

IPv6 addresses are classified by the primary addressing and routing methodologies common in networking: unicast addressing, anycast addressing, and multicast addressing.

u2711 A unicast address identifies a single network interface. The Internet Protocol

delivers packets sent to a unicast address to that specific interface.

u2711 An anycast address is assigned to a group of interfaces, usually belonging to different nodes. A packet sent to an anycast address is delivered to just one of the

member interfaces, typically thenearesthost, according to the routing protocolu2019s definition of distance. Anycast addresses cannot be identified easily, they have the same format as unicast addresses, and differ only by their presence in the network at multiple points. Almost any unicast address can be employed as an anycast address.

u2711 A multicast address is also used by multiple hosts, which acquire the multicast

address destination by participating in the multicast distribution protocol among the network routers. A packet that is sent to a multicast address is delivered to all interfaces that have joined the corresponding multicast group.

Topic 10, Infrastructure Security

835.Refer to the exhibit.

The following commands are executed on interface fa0/1 of 2950Switch. 2950Switch(config-if)# switchport port-security

2950Switch(config-if)# switchport port-security mac-address sticky 2950Switch(config-if)# switchport port-security maximum 1

The Ethernet frame that is shown arrives on interface fa0/1. What two functions will occur

when this frame is received by 2950Switch? (Choose two.)

A. The MAC address table will now have an additional entry of fa0/1 FFFF.FFFF.FFFF.

B. Only host A will be allowed to transmit frames on fa0/1.

C. This frame will be discarded when it is received by 2950Switch.

D. All frames arriving on 2950Switch with a destination of 0000.00aa.aaaa will be forwarded out fa0/1.

E. Hosts B and C may forward frames out fa0/1 but frames arriving from other switches will not be forwarded out fa0/1.

F. Only frames from source 0000.00bb.bbbb, the first learned MAC address of 2950Switch, will be forwarded out fa0/1.

New Questions 4

How many bits are contained in each field of an IPv6 address?

A. 24

B. 4

C. 8

D. 16

Answer: D

Explanation:

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.

New Questions 5

Refer to the exhibit.

A problem with network connectivity has been observed. It is suspected that the cable connected to switch port Fa0/9 on Switch1 is disconnected. What would be an effect of this cable being disconnected?

A. Host B would not be able to access the server in VLAN9 until the cable is reconnected.

B. Communication between VLAN3 and the other VLANs would be disabled.

C. The transfer of files from Host B to the server in VLAN9 would be significantly slower.

D. For less than a minute, Host B would not be able to access the server in VLAN9. Then normal network function would resume.

Answer: D

Explanation:

Spanning-Tree Protocol (STP) is a Layer 2 protocol that utilizes a special-purpose algorithm to discover physical loops in a network and effect a logical loop-free topology. STP creates a loop-free tree structure consisting of leaves and branches that span the

entire Layer 2 network. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. Note that the terms bridge and switch are used interchangeably when discussing STP. In addition, unless otherwise indicated, connections between switches are assumed to be trunks.

New Questions 6

Refer to the exhibit.

What statement is true of the configuration for this network?

A. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported.

B. Because of the addressing on interface FastEthernet0/1, the Serial0/0 interface address will not support the NAT configuration as shown.

C. The number 1 referred to in the ip nat inside source command references access-list number 1.

D. ExternalRouter must be configured with static routes to networks 172.16.1.0/24 and 172.16.2.0/24.

Answer: C

Explanation:

The u201clist 1 refers to the access-list number 1.

New Questions 7

What will be the result if the following configuration commands are implemented on a Cisco switch?

Switch(config-if)# switchport port-security

Switch(config-if)# switchport port-security mac-address sticky

A. A dynamically learned MAC address is saved in the startup-configuration file.

B. A dynamically learned MAC address is saved in the running-configuration file.

C. A dynamically learned MAC address is saved in the VLAN database.

D. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.

E. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.

Answer: B

Explanation:

In the interface configuration mode, the command switchport port-security mac-address sticky enables sticky learning. When entering this command, the interface converts all the dynamic secure MAC addresses to sticky secure MAC addresses.

New Questions 8

You are working in a data center environment and are assigned the address range 10.188.31.0/23. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. Which IP address range meets these requirements?

A. 10.188.31.0/26

B. 10.188.31.0/25

C. 10.188.31.0/28

D. 10.188.31.0/27

E. 10.188.31.0/29

Answer: D

Explanation:

Each subnet has 30 hosts < 32 = 25 so we need a subnet mask which has at least 5 bit 0s

-> /27. Also the question requires the maximum number of subnets (which minimum the number of hosts-per-subnet) so /27 is the best choice.

New Questions 9

CORRECT TEXTThe following have already been configured on the router:

u2711 The basic router configuration

u2711 The appropriate interfaces have been configured for NAT inside and NAT outside.

u2711 The appropriate static routes have also been configured (since the company will be a stub network, no routing protocol will be required)

u2711 All passwords have been temporarily set to u201cciscou201d.

The task is to complete the NAT configuration using all IP addresses assigned by the ISP to provide Internet access for the hosts in the Weaver LAN. Functionality can be tested by clicking on the host provided for testing.

Configuration information: router name u2013 Weaver

inside global addresses u2013 198.18.184.105 – 198.18.184.110/29 inside local addresses – 192.168.100.17 u2013 192.168.100.30/28

number of inside hosts u2013 14

A network associate is configuring a router for the weaver company to provide internet access. The ISP has provided the company six public IP addresses of 198.18.184.105 198.18.184.110. The company has 14 hosts that need to access the internet simultaneously. The hosts in the company LAN have been assigned private space addresses in the range of 192.168.100.17 u2013 192.168.100.30.

Answer:

The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from 198.18.184.105 to 198.18.184.110/29. Therefore we have to use NAT overload (or PAT)

Double click on the Weaver router to open it

Router>enable Router#configure terminal

First you should change the router's name to Weaver

Router(config)#hostname Weaver

Create a NAT pool of global addresses to be allocated with their netmask. Weaver(config)#ip nat pool mypool 198.18.184.105 198.18.184.110 netmask 255.255.255.248

Create a standard access control list that permits the addresses that are to betranslated.

Weaver(config)#access-list 1 permit 192.168.100.16 0.0.0.15

Establish dynamic source translation, specifying the access list that was definedin the prior step.

Weaver(config)#ip nat inside source list 1 pool mypool overload

This command translates all source addresses that pass access list 1, which means a source address from 192.168.100.17 to 192.168.100.30, into an address from the pool

named mypool (the pool contains addresses from198.18.184.105 to 198.18.184.110). Overloadkeyword allows to map multiple IP addresses to a single registered IPaddress (many-to-one) by using different ports.

The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements.

This is how to configure the NAT inside and NAT outside, just for yourunderstanding:

Weaver(config)#interface fa0/0 Weaver(config-if)#ip nat inside Weaver(config-if)#exit Weaver(config)#interface s0/0 Weaver(config-if)#ip nat outside Weaver(config-if)#end

Finally, we should save all your work with the following command:

Weaver#copy running-config startup-config

Check your configuration by going to "Host for testing" and type:

C :\\>ping 192.0.2.114

The ping should work well and you will be replied from 192.0.2.114

New Questions 10

Which two of these statements are true of IPv6 address representation? (Choose two.)

A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.

B. A single interface may be assigned multiple IPv6 addresses of any type.

C. Every IPv6 interface contains at least one loopback address.

D. The first 64 bits represent the dynamically created interface ID.

E. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.

Answer: B,C

Explanation:

u2711 A single interface may be assigned multiple addresses of any type (unicast, anycast, multicast).

u2711 Every IPv6-enabled interface must contain at least one loopback and one link-local

address.

u2711 Optionally, every interface can have multiple unique local and global addresses.

Reference: IPv6 Addressing at a Glance u2013 Cisco PDF

New Questions 11

Which protocol can cause overload on a CPU of a managed device?

A. Netflow

B. WCCP

C. IP SLA

D. SNMP

Answer: D

Explanation:

Sometimes, messages like this might appear in the router console:

%SNMP-3-CPUHOG: Processing [chars] of [chars]

They mean that the SNMP agent on the device has taken too much time to process a request.

You can determine the cause of high CPU use in a router by using the output of the show process cpu command.

Note: A managed device is a part of the network that requires some form of monitoring and management (routers, switches, servers, workstations, printersu2026).

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