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2021 Apr 200-125 practice question

Q1.  - (Topic 5)

What are the alert messages generated by SNMP agents called?

A. TRAP

B. INFORM

C. GET

D. SET

Answer: A,B

Explanation:

A TRAP is a SNMP message sent from one application to another (which is typically on a remote host). Their purpose is merely to notify the other application that something has happened, has been noticed, etc. The big problem with TRAPs is that they’re

unacknowledged so you don’t actually know if the remote application received your oh-so- important message to it. SNMPv2 PDUs fixed this by introducing the notion of an INFORM, which is nothing more than an acknowledged TRAP.


Q2.  - (Topic 5)

What levels will be trapped if the administrator executes the command router(config)# logging trap 4 (Choose four)

A. Emergency

B. Notice

C. Alert

D. Error

E. Warning

Answer: A,C,D,E

Explanation:

The Message Logging is divided into 8 levels as listed below: Level Keyword Description

0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist

3 errors Error conditions exist

4 warnings Warning conditions exist

5 notification Normal, but significant, conditions exist 6 informational Informational messages

7 debugging Debugging messages

If you specify a level with the “logging trap level” command, that level and all the higher levels will be logged. For example, by using the “logging trap 4 command, all the logging of emergencies, alerts, critical, errors, warnings will be logged.


Q3.  - (Topic 5)

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.

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

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

✑ 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 the nearest host, according to the routing protocol’s 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.

✑ 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.


Q4. DRAG DROP - (Topic 6)

Drag the security features on the left to the specific security risks they help protect against on the right. (Not all options are used.)

Answer:


Q5.  - (Topic 5)

What are three features of the IPv6 protocol? (Choose three.)

A. optional IPsec

B. autoconfiguration

C. no broadcasts

D. complicated header

E. plug-and-play

F. checksums

Answer: B,C,E

Explanation:

An important feature of IPv6 is that it allows plug and play option to the network devices by allowing them to configure themselves independently. It is possible to plug a node into an IPv6 network without requiring any human intervention. This feature was critical to allow network connectivity to an increasing number of mobile devices. This is accomplished by autoconfiguration.

IPv6 does not implement traditional IP broadcast, i.e. the transmission of a packet to all hosts on the attached link using a special broadcast address, and therefore does not define broadcast addresses. In IPv6, the same result can be achieved by sending a packet to the link-local all nodes multicast group at address ff02::1, which is analogous to IPv4 multicast to address 224.0.0.1.


Improved 200-125 free exam:

Q6.  - (Topic 8)

Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsulation?

A. router#show platform

B. router#show interfaces Serial 0/2/0

C. router#show ip interface s0/2/0

D. router#show ip interface brief

Answer: C


Q7.  - (Topic 8)

Why has the Branch3 router lost connectivity with R1?

Use only show commands to troubleshoot because usage of the debug command is restricted on the Branch3 and R1 routers.

A. A PPP chap hostname mismatch is noticed between Branch3 and R1.

B. A PPP chap password mismatch is noticed between Branch3 and R1.

C. PPP encapsulation is not configured on Branch3.

D. The PPP chap hostname and PPP chap password commands are missing on the Branch3 router.

Answer: A


Q8.  - (Topic 8)

Which command sequence can you enter to create VLAN 20 and assign it to an interface on a switch?

A. Switch(config)#vlan 20 Switch(config)#Interface gig x/y Switch(config-if)#switchport access vlan 20

B. Switch(config)#Interface gig x/y Switch(config-if)#vlan 20

Switch(config-vlan)#switchport access vlan 20

C. Switch(config)#vlan 20

Switch(config)#Interface vlan 20

Switch(config-if)#switchport trunk native vlan 20

D. Switch(config)#vlan 20

Switch(config)#Interface vlan 20 Switch(config-if)#switchport access vlan 20

E. Switch(config)#vlan 20

Switch(config)#Interface vlan 20

Switch(config-if)#switchport trunk allowed vlan 20

Answer: A


Q9.  - (Topic 8)

Which command can you enter to determine whether a switch is operating in trunking mode?

A. show ip interface brief

B. show vlan

C. show interfaces

D. show interface switchport

Answer: D


Q10.  - (Topic 7)

Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three.)

A. ping

B. tracert

C. ipconfig

D. show ip route

E. winipcfg

F. show interfaces

Answer: A,D,F

Explanation:

Ping, show ip route, and show interfaces are all valid troubleshooting IOS commands. Tracert, ipconfig, and winipcfg are PC commands, not IOS.