Cisco 300-135 Keys 2021

NEW QUESTION 1

The implementations group has been using the test bed to do a ‘proof-of-concept’ that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions. What is the solution to the fault condition?

• A. Under the interface Serial0/0/0 configuration enter the ip nat inside command.
• B. Under the interface Serial0/0/0 configuration enter the ip nat outside command.
• C. Under the ip access-list standard nat_trafic configuration enter the permit 10.2.0.0 0.0.255.255 command.
• D. Under the ip access-list standard nat_trafic configuration enter the permit 209.65.200.0 0.0.0.255 command.

Answer: C

Explanation:
On R1 we need to add the client IP address for reachability to server to the access list that is used to specify which hosts get NATed.

NEW QUESTION 2

Which of the following are correct statements?

• A. EIGRP advertises the best routes to its neighbor.
• B. EIGRP uses "cost" to determine best path.
• C. EIGRP allows unequal cost load balancing.
• D. OSPF requires neighbor adjacencies before updates are sent.
• E. EIGRP advertises all routes to its neighbor.
• F. OSPF allows unequal cost load balancing.

Answer: ACD

NEW QUESTION 3

You want to troubleshoot an OSPF adjacency issue. Which two tasks must you perform? (Choose two.)

• A. Issue the debug ip ospf nsf command to identity the cause.
• B. Issue the debug ip ospf adj command to identify the cause.
• C. Verify that the router IDs on the two routers match.
• D. Verify that the subnet masks on the two routers match.
• E. Verify that the process IDs on the two routers match.

Answer: BD

NEW QUESTION 4

The implementations group has been using the test bed to do a ‘proof-of-concept’ that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions. The fault condition is related to which technology?

• A. NTP
• B. IP DHCP Server
• C. IPv4 OSPF Routing
• D. IPv4 EIGRP Routing
• E. IPv4 Route Redistribution
• F. IPv6 RIP Routing
• G. IPv6 OSPF Routing
• H. IPv4 and IPv6 Interoperability
• I. IPv4 layer 3 security

Answer: D

Explanation:
On R4, IPV4 EIGRP Routing, need to change the EIGRP AS number from 1 to 10 since DSW1 & DSW2 is configured to be in EIGRP AS number 10.

NEW QUESTION 5

The implementations group has been using the test bed to do a ‘proof-of-concept’ that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network
addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions. The fault condition is related to which technology?

• A. NTP
• B. Switch-to-Switch Connectivity
• C. Access Vlans
• D. Port Security
• E. VLAN ACL / Port ACL
• F. Switch Virtual Interface

Answer: D

Explanation:
Port security is causing the connectivity issues. On ASW1, we need to remove port-security under interface fa1/0/1 & fa1/0/2.

NEW QUESTION 6

Which three keywords are supported in the ip header option?

• A. Timeout
• B. Type of service
• C. Validate
• D. Timestamp
• E. Record
• F. Strict

Answer: DEF

NEW QUESTION 7

The implementations group has been using the test bed to do a ‘proof-of-concept’ that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions. What is the solution to the fault condition?

• A. In Configuration mode, using the interface range Fa 1/0/1 – 2, then no switchport port-security interface configuration command
• B. Then in exec mode clear errdisable interface fa 1/01 – 2 vlan 10 command
• C. In Configuration mode, using the interface range Fa 1/0/1 – 2, then no switchport port-security, followed by shutdown, no shutdown interface configuration commands.
• D. In Configuration mode, using the interface range Fa 1/0/1 – 2, then no switchport port-security interface configuration commands.
• E. In Configuration mode, using the interface range Fa 1/0/1 – 2, then no switchport port-security interface configuration command
• F. Then in exec mode clear errdisable interface fa 1/0/1, then clear errdisable interface fa 1/0/2 commands.

Answer: B

Explanation:
On ASW1, we need to remove port-security under interface fa1/0/1 & fa1/0/2. Reference:
http://www.cisco.com/en/US/tech/ABC389/ABC621/technologies_tech_note09186a00806cd87b.shtml
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NEW QUESTION 8

You have 2 NTP servers in your network - 10.1.1.1 and 10.1.1.2. You want to configure a Cisco router to use 10.1.1.2 as its NTP server before falling back to 10.1.1.1. Which commands will you use to configure the router?

• A. ntp server 10.1.1.1 ntp server 10.1.1.2
• B. ntp server 10.1.1.1ntp server 10.1.1.2 primary
• C. ntp server 10.1.1.1ntp server 10.1.1.2 prefer
• D. ntp server 10.1.1.1 fallback ntp server 10.1.1.2

Answer: C

Explanation:
Preferred server
A router can be configured to prefer an NTP source over another. A preferred server's responses are discarded only if they vary dramatically from the other time sources. Otherwise, the preferred server is used for synchronization without consideration of the other time sources. Preferred servers are usually specified when they are known to be extremely accurate. To specify a preferred server, use the prefer keyword appended to the ntp server command. The following example tells the router to prefer TimeServerOne over TimeServerTwo:
Router#config terminal
Enter configuration commands, one per line. End with CNTL/Z. Router(config)#ntp server TimeServerOne prefer Router(config)#ntp server TimeServerTwo
Router(config)#^Z
Reference: Hardening Cisco Routers By Thomas Akin February 2002 0-596-00166-5, Chapter 10, NTP.

NEW QUESTION 9

Which of the following commands can be used to gather information about the AS-PATH of a BGP route? (Choose all that apply.)

• A. show ip bgp neighbors
• B. debug ip bgp updates
• C. show ip route bgp
• D. show ip bgp
• E. show ip bgp summary
• F. sh ip bgp database

Answer: BD

Explanation:
Incorrect:
show ip bgp summary: The command show ip bgp summary does not presents informations about routes.

NEW QUESTION 10

Scenario:
A customer network engineer has edited their OSPF network configuration and now your customer is experiencing network issues. They have contacted you to resolve the issues and return the network to full functionality.







The OSPF neighbour relationship has been lost between R1 and R3. What is causing this problem?

• A. The serial interface in R1 should be taken out of the shutdown state.
• B. A neighbor statement needs to be configured in R1 and R3 pointing at each other.
• C. The R1 network type should be changed to point-to-multipoint non-broadcast.
• D. The hello, dead and wait timers on R1 need to be reconfigured to match the values on R3.

Answer: C

Explanation:
In order for two OSPF routers to become neighbors, they must have matching network types across the links. In this case, we see that R1 has been configured as non-broadcast and R3 is using point to point non-broadcast.


This can be seen by issuing the “show running-config” command on each router, or the “show ip ospf interface” command:

NEW QUESTION 11

Which of the following statements concerning IGMP are correct? (Choose all that apply.)

• A. With IGMPvl, queries are sent to a specific group.
• B. Hosts issuing IGMPvl requests will be correctly interpreted by IGMPv2 hosts due to backward compatibility.
• C. An IGMPv2 router will ignore IGMPv2 leave messages when IGMFVl hosts are present.
• D. With IGMFV2, a leave message is supported.
• E. An IGMPv2 host will send an IGMFVl report on an IGMFVl router.
• F. An IGMPv2 router can only allow IGMPv2 hosts to execute a join request.

Answer: CDE

NEW QUESTION 12

Drag the properties from the left onto their corresponding Unicast Reverse Path Forwarding mode on the right. Not all properties are used.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:

NEW QUESTION 13

Examine the output from R1. Interface FastEthernet0/0 is used for all management of the device. A client is able to connect to R1 on port 22, however, they are unable to connect on port 23. What is the cause of the problem?

• A. Management Plane Protection (MPP) is enabled, however telnet is not allowed
• B. Telnet and SSH are not allowed at the same time.
• C. Management Plane Protection (MPP) is enabled, which only allows SSH
• D. Management Plane Protection (MPP) is enabled on the wrong interface

Answer: A

NEW QUESTION 14

The implementation group has been using the test bed to do an IPv6 'proof-of-concept1. After several changes to the network addressing and routing schemes, a trouble ticket has been opened indicating that the loopback address on R1 (2026::111:1) is not able to ping the loopback address on DSW2 (2026::102:1).
Use the supported commands to isolate the cause of this fault and answer the following question. On which device is the fault condition located?

• A. R1
• B. R2
• C. R3
• D. R4
• E. DSW1
• F. DSW2
• G. ASW1
• H. ASW2

Answer: C

Explanation:
Start to troubleshoot this by pinging the loopback IPv6 address of DSW2 (2026::102:1). This can be pinged from DSW1, and R4, but not R3 or any other devices past that point. If we look at the routing table of R3, we see that there is no OSPF neighbor to R4:
Screen Shot 2015-03-11 at 4

This is due to mismatched tunnel modes between R3 and R4: Screen Shot 2015-03-11 at 4

Problem is with R3, and to resolve the issue we should delete the “tunnel mode ipv6” under interface Tunnel 34.

NEW QUESTION 15

A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.





You have configured PVST+ load balancing between SW1 and the New_Switch in such a way that both the links E2/2 and E2/3 are utilized for traffic flow, which component of the configuration is preventing PVST+ load balancing between SW1 and SW2 links

• A. Port priority configuration on SW1
• B. Port priority configuration on the New_Switch
• C. Path cost configuration on SW1
• D. Path cost configuration on the New_Switch

Answer: D

Explanation:
Here is the configuration found on the New_Switch:

This causes the port cost for link eth 1/3 to increase the path cost to 250 for all VLANs, making that link less preferred so that only eth 1/2 will be used.

NEW QUESTION 16

The following command is issued on a Cisco Router: Router(configuration)#logging console warnings Which alerts will be seen on the console?

• A. Warnings only
• B. debugging, informational, notifications, warnings
• C. warnings, errors, critical, alerts, emergencies
• D. notifications, warnings, errors
• E. warnings, errors, critical, alerts

Answer: C

Explanation:
Cisco routers prioritize log messages into 8 levels (0-7), as shown below: LevelLevel NameDescription
0 Emergencies System is unusable 1 Alerts Immediate action needed 2 Critical Critical conditions
3 Errors Error conditions
4 Warnings Warning conditions
5 Notifications Informational messages
6 Informational Normal but significant conditions 7 Debugging Debugging messages
When you enable logging for a specific level, all logs of that severity and greater (numerically less) will be logged. In this case, when you enable console logging of warning messages (level 4), it will log levels 0-4, making the correct answer warnings, errors, critical, alerts, and emergencies.

NEW QUESTION 17

The implementations group has been using the test bed to do a ‘proof-of-concept’ that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions. What is the solution to the fault condition?

• A. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport mode access vlan 10 command.
• B. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport access mode vlan 10 command.
• C. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport vlan 10 access command.
• D. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport access vlan 10 command.

Answer: D

Explanation:
The problem here is that VLAN 10 is not configured on the proper interfaces on switch ASW1.

NEW QUESTION 18

Which protocol does mGRE use to determine where packets are sent?

• A. CEF
• B. EIGRP
• C. NHRP
• D. DMVPN

Answer: A

Explanation:
Reference:
https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/41940-dmvpn.html

NEW QUESTION 19

Which of the following characteristics describe the BPDU Guard feature? (Choose all that apply.)

• A. ABPDU Guard port should only be configured on ports with PortFast enabled.
• B. BPDU Guard and PortFast should not be enabled on the same port.
• C. BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.
• D. ABPDU Guard port receiving a BPDU will go into err-disable state.
• E. ABPDU Guard port receiving a BPDU will be disabled.
• F. BPDU Guard can be enabled on any switch port.

Answer: ADE

Explanation:
Option A is, obviously, valid, since BPDUGuard is a enhancement of thePortFast feature. Reference: Spanning Tree PortFast BPDU Guard Enhancement
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a008009482f.shtml

NEW QUESTION 20

The implementations group has been using the test bed to do a ‘proof-of-concept’ that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions. The fault condition is related to which technology?

• A. BGP
• B. NTP
• C. IP NAT
• D. IPv4 OSPF Routing
• E. IPv4 OSPF Redistribution
• F. IPv6 OSPF Routing
• G. IPv4 layer 3 security

Answer: G

Explanation:
On R1, we need to permit IP 209.65.200.222/30 under the access list.

NEW QUESTION 21

Drag and drop the extended traceroute options from the left onto the troubleshooting they perform on the right.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
Max TTL —> limits the number of hops a packet travel
Port number –> troubleshoot connections generated from specific interface Probe count –> limits the number of traceroute
Source address–> troubleshoot TCP and UDP port
Type of service –> troubleshoot QoS issues

NEW QUESTION 22

Which of the following are shared distribution tree characteristics? (Choose all that apply.)

• A. Memory requirements are higher for shared distribution tree than for source distribution tree.
• B. Creates a tree from a central RP to all last-hop routers.
• C. Uses a rendezvous point.
• D. An optimal path is created between each source router and each last-hop router.
• E. Place (S,G) entry in each router's multicast routing table.
• F. Place (*,G) entry in a router's multicast routing to table.

Answer: CF

NEW QUESTION 23

Drag and drop the required GRE tunnel as below.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:

NEW QUESTION 24

Which two features are supported with GRE-based tunnels? (Choose two )

• A. on-demand tunnels
• B. any-to-any connectivity
• C. data encapsulation
• D. encryption
• E. multicast traffic forwarding

Answer: CE

NEW QUESTION 25
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