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New Cisco 200-125 Exam Dumps Collection (Question 5 - Question 14)
Question No: 5
At which layer of the OSI model is RSTP used to prevent loops?
A. physical
B. data link
C. network
D. transport
Answer: B
Explanation:
RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge -> RSTP operates at Layer 2 u2013 Data Link layer ->.
Question No: 6
Which command is used to enable CHAP authentication, with PAP as the fallback method, on a serial interface?
A. Router(config-if)# ppp authentication chap fallback ppp
B. Router(config-if)# ppp authentication chap pap
C. Router(config-if)# authentication ppp chap fallback ppp
D. Router(config-if)# authentication ppp chap pap
Answer: B
Explanation:
This command tells the router first to use CHAP and then go to PAP if CHAP isn't available.
Question No: 7
Syslog was configured with a level 3 trap. Which 3 types of logs would be generated (choose four)
A. Emergencies
B. Alerts
C. Critical
D. Errors
E. Warnings
Answer: A,B,C,D
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
The highest level is level 0 (emergencies). The lowest level is level 7. If you specify a level with the u201clogging console levelu201d command, that level and all the higher levels will be displayed. For example, by using the u201clogging console warningsu201d command, all the logging of emergencies, alerts, critical, errors, warnings will be displayed.
Question No: 8
What command sequence will configure a router to run OSPF and add network 10.1.1.0/24 to area 0?
A. router ospf area 0
network 10.1.1.0 255.255.255.0 area 0
B. router ospf
network 10.1.1.0 0.0.0.255
C. router ospf 1
network 10.1.1.0 0.0.0.255 area 0
D. router ospf area 0
network 10.1.1.0 0.0.0.255 area 0
E. router ospf
network 10.1.1.0 255.255.255.0 area 0
F. router ospf 1
network 10.1.1.0 0.0.0.255
Answer: C
Explanation:
u2711 Enabling OSPF
SUMMARY STEPS
1.enable 2.configureterminal 3.router ospfprocess-id
4.networkip-addresswildcard-maskareaarea-id 5.end
DETAILED STEPS
Command or Action Purpose
Step 1 Enable
Example:
Device> enable
Enables privileged EXEC mode.
u2711 Enter your password if prompted.
Step 2 Configureterminal
Example:
Device# configure terminal Enters global configuration mode.
Step 3
router ospfprocess-id
Example:
Device(config)# router ospf 109
Enables OSPF routing and enters router configuration mode.
Step 4
Networkip-addresswildcard-maskareaarea-id
Example:
Device(config-router)# network 192.168.129.16 0.0.0.3 area 0
Defines an interface on which OSPF runs and defines the area ID for that interface.
Step 5 End
Example:
Device(config-router)# end
Exits router configuration mode and returns to privileged EXEC mode.
Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/12-4t/iro-12-4t-book/iro-cfg.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673
Question No: 9
Refer to the exhibit.
All switch ports are assigned to the correct VLANs, but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. Based on the output shown, what is the most likely problem?
A. The access link needs to be configured in multiple VLANs.
B. The link between the switches is configured in the wrong VLAN.
C. The link between the switches needs to be configured as a trunk.
D. VTP is not configured to carry VLAN information between the switches.
E. Switch IP addresses must be configured in order for traffic to be forwarded between the switches.
Answer: C
Explanation:
In order to pass traffic from VLANs on different switches, the connections between the switches must be configured as trunk ports.
Question No: 10
Refer to the exhibit.
What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two.)
A. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address 192.168.1.1 255.255.255.0 Router(config-if)# no shut down
B. Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.1 Router(config-subif)# encapsulation dot1q 10
Router(config-subif)# ip address 192.168.10.1 255.255.255.0 Router(config)# interface fastethernet 0/0.2
Router(config-subif)# encapsulation dot1q 20
Router(config-subif)# ip address 192.168.20.1 255.255.255.0
C. Router(config)# router eigrp 100 Router(config-router)# network 192.168.10.0
Router(config-router)# network 192.168.20.0
D. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ Switch1(config-vlan)# vtp server
E. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk
F. Switch1(config)# interface vlan 1 Switch1(config-if)# ip default-gateway 192.168.1.1
Answer: B,E
Explanation:
The router will need to use subinterfaces, where each subinterface is assigned a VLAN and IP address for each VLAN. On the switch, the connection to the router need to be configured as a trunk using the switchport mode trunk command and it will need a default gateway for VLAN 1.
Question No: 11
The network administrator needs to address seven LANs. RIP version 1 is the only routing protocol in use on the network and subnet 0 is not being used. What is the maximum number of usable IP addresses that can be supported on each LAN if the organization is using one class C address block?
A. 8
B. 6
C. 30
D. 32
E. 14
F. 16
Answer: C
Explanation:
Since there is one class C network that means 256 total IP addresses. Since we need 7
LAN blocks and we cannot use the first one (subnet 0) we take 256/8=32 hosts. However, since we need to reserve the network and broadcast addresses for each of these subnets, only 30 total IP addresses are usable.
Question No: 12
Refer to the exhibit.
A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected to SwitchA. Which set of commands is required to accomplish this task?
A. SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown
B. SwitchB(config)# interface vlan 1
SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0
SwitchB(config-if)# ip default-gateway 192.168.8.254 255.255.255.0 SwitchB(config-if)# no shutdown
C. SwitchB(config)# ip default-gateway 192.168.8.254 SwitchB(config)# interface vlan 1
SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown
D. SwitchB(config)# ip default-network 192.168.8.254 SwitchB(config)# interface vlan 1
SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown
E. SwitchB(config)# ip route 192.168.8.254 255.255.255.0 SwitchB(config)# interface FastEthernet 0/1
SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown
Answer: C
Explanation:
To remote access to SwitchB, it must have a management IP address on a VLAN on that
switch. Traditionally, we often use VLAN 1 as the management VLAN (but in fact it is not secure).
In the exhibit, we can recognize that the Management Workstation is in a different subnet from the SwitchB. For intersubnetwork communication to occur, you must configure at least one default gateway. This default gateway is used to forward traffic originating from the switch only, not to forward traffic sent by devices connected to the switch.
Question No: 13
A Cisco router is booting and has just completed the POST process. It is now ready to find and load an IOS image. What function does the router perform next?
A. It checks the configuration register.
B. It attempts to boot from a TFTP server.
C. It loads the first image file in flash memory.
D. It inspects the configuration file in NVRAM for boot instructions.
Answer: A
Explanation:
Default (normal) Boot Sequence
Power on Router - Router does POST - Bootstrap starts IOS load - Check configuration register to see what mode the router should boot up in (usually 0x2102 to read startup- config in NVRAM / or 0x2142 to start in "setup-mode") - check the startup-config file in NVRAM for boot-system commands - load IOS from Flash.
Question No: 14
RouterA is unable to reach RouterB. Both routers are running IOS version 12.0.
After reviewing the command output and graphic, what is the most likely cause of the problem?
A. incorrect bandwidth configuration
B. incorrect LMI configuration
C. incorrect map statement
D. incorrect IP address
Answer: C
Explanation:
First we have to say this is an unclear question and it is wrong. The u201cframe-relay map ipu201d statement is correct thus none of the four answers above is correct. But we guess there is a typo in the output. Maybe the u201cip address 172.16.100.2 255.255.0.0 command should be u201cip address 172.16.100.1 255.255.0.0. That makes answer C correct.
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