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New Cisco 200-125 Exam Dumps Collection (Question 4 - Question 13)
Q4. Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch? (Choose two.)
A. SW1#show port-secure interface FastEthernet 0/12
B. SW1#show switchport port-secure interface FastEthernet 0/12
C. SW1#show running-config
D. SW1#show port-security interface FastEthernet 0/12
E. SW1#show switchport port-security interface FastEthernet 0/12
Answer: C,D
Explanation:
We can verify whether port security has been configured by using the u201cshow running- configu201d or u201cshow port-security interfaceu201d for more detail. An example of the output of u201cshow port-security interfaceu201d command is shown below:
Q5. What are three approaches that are used when migrating from an IPv4 addressing scheme to an IPv6 scheme. (Choose three.)
A. enable dual-stack routing
B. configure IPv6 directly
C. configure IPv4 tunnels between IPv6 islands
D. use proxying and translation to translate IPv6 packets into IPv4 packets
E. statically map IPv4 addresses to IPv6 addresses
F. use DHCPv6 to map IPv4 addresses to IPv6 addresses
Answer: A,C,D
Explanation:
Several methods are used terms of migration including tunneling, translators, and dual stack. Tunnels are used to carry one protocol inside another, while translators simply translate IPv6 packets into IPv4 packets. Dual stack uses a combination of both native IPv4 and IPv6. With dual stack, devices are able to run IPv4 and IPv6 together and if IPv6 communication is possible that is the preferred protocol. Hosts can simultaneously reach IPv4 and IPv6 content.
Q6. When you are troubleshooting an ACL issue on a router, which command would you use to verify which interfaces are affected by the ACL?
A. show ip access-lists
B. show access-lists
C. show interface
D. show ip interface
E. list ip interface
Answer: D
Explanation:
Incorrect:
show ip access-lists does not show interfaces affected by an ACL.
Q7. 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 u201clogging trap levelu201d command, that level and all the higher levels will be logged. For example, by using the u201clogging trap 4 command, all the logging of emergencies, alerts, critical, errors, warnings will be logged.
Q8. Refer to the exhibit.
The network shown in the diagram is experiencing connectivity problems. Which of the following will correct the problems? (Choose two.)
A. Configure the gateway on Host A as 10.1.1.1.
B. Configure the gateway on Host B as 10.1.2.254.
C. Configure the IP address of Host A as 10.1.2.2.
D. Configure the IP address of Host B as 10.1.2.2.
E. Configure the masks on both hosts to be 255.255.255.224.
F. Configure the masks on both hosts to be 255.255.255.240.
Answer: B,D
Explanation:
The switch 1 is configured with two VLANs: VLAN1 and VLAN2. The IP information of member Host A in VLAN1 is as follows: Address : 10.1.1.126
Mask : 255.255.255.0
Gateway : 10.1.1.254
The IP information of member Host B in VLAN2 is as follows: Address : 10.1.1.12
Mask : 255.255.255.0
Gateway : 10.1.1.254
The configuration of sub-interface on router 2 is as follows: Fa0/0.1 -- 10.1.1.254/24 VLAN1
Fa0/0.2 -- 10.1.2.254/24 VLAN2
It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong. The layer3 addressing information of Host B should be modified as follows:
Address : 10.1.2.X Mask : 255.255.255.0
Q9. Scenario
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.
An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?
A. There is an area ID mismatch.
B. There is a PPP authentication issue; a password mismatch.
C. There is an OSPF hello and dead interval mismatch.
D. There is a missing network command in the OSPF process on R5.
Answer: C
Explanation:
The u201cshow ip ospf interface command on R3 and R5 shows that the hello and dead intervals do not match. They are 50 and 200 on R3 and 10 and 40 on R5.
Q10. Which item represents the standard IP ACL?
A. access-list 110 permit ip any any
B. access-list 50 deny 192.168.1.1 0.0.0.255
C. access list 101 deny tcp any host 192.168.1.1
D. access-list 2500 deny tcp any host 192.168.1.1 eq 22
Answer: B
Explanation:
The standard access lists are ranged from 1 to 99 and from 1300 to 1999 so only access list 50 is a standard access list.
Q11. Which option is a valid IPv6 address?
A. 2001:0000:130F::099a::12a
B. 2002:7654:A1AD:61:81AF:CCC1
C. FEC0:ABCD:WXYZ:0067::2A4
D. 2004:1:25A4:886F::1
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. The leading 0u2021s in a group can be collapsed using ::, but this can only be done once in an IP address.
Q12. What authentication type is used by SNMPv2?
A. HMAC-MD5
B. HMAC-SHA
C. CBC-DES
D. community strings
Answer: D
Explanation:
SNMP Versions
Cisco IOS software supports the following versions of SNMP:
u2022SNMPv1 u2014 The Simple Network Management Protocol: A Full Internet Standard, defined in RFC 1157. (RFC 1157 replaces the earlier versions that were published as RFC 1067 and RFC 1098.) Security is based on community strings.
u2022SNMPv2c u2014 The community-string based Administrative Framework for SNMPv2. SNMPv2c (the "c" stands for "community") is an Experimental Internet Protocol defined in RFC 1901, RFC 1905, and RFC 1906. SNMPv2c is an update of the protocol operations and data types of SNMPv2p (SNMPv2 Classic), and uses the community-based security model of SNMPv1.
u2022SNMPv3 u2014 Version 3 of SNMP. SNMPv3 is an interoperable standards-based protocol defined in RFCs 2273 to 2275. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over the network.
SNMP Security Models and Levels
Model Level
Authentication Encryption What Happens v1 noAuthNoPriv
Community String No
Uses a community string match for authentication. v2c
noAuthNoPriv Community String No
Uses a community string match for authentication. v3
noAuthNoPriv Username
No
Uses a username match for authentication. v3
authNoPriv MD5 or SHA
No
Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms. v3
authPriv MD5 or SHA DES
Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms. Provides DES 56-bit encryption in addition to authentication based on the CBC-DES (DES-56) standard.
Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf014.h tml
Q13. What command instructs the device to timestamp Syslog debug messages in milliseconds?
A. service timestamps log datetime localtime<input type
B. service timestamps debug datetime msec<input type
C. service timestamps debug datetime localtime<input type
D. service timestamps log datetime msec
Answer: B
Explanation:
Enable millisecond (msec) timestamps using the service timestamps command: router(config)#service timestamps debug datetime msec.
router(config)#service timestamps log datetime msec The u201cservice timestamps debugu201d.
command configures the system to apply a time stamp to debugging messages. The time- stamp format fordatetimeisMMM DD HH:MM:SS, whereMMMis the month,DDis the date,HHis the hour (in 24-hour notation),MMis the minute, andSSis the second. With the additional keywordmsec, the system includes milliseconds in the time stamp, in the formatHH:DD:MM:SS.mmm, where .mmmis milliseconds.