Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 291:

  Refer to the exhibit. Packets arriving from source 209.165.200.215 must be sent with the precedence bit set to 1, and packets arriving from source 209.165.200.216 must be sent with the precedence bit set to 5. Which action resolves the issue?

  

  A. set ip precedence critical in route-map Texas permit 10
  B. set ip precedence critical in route-map Texas permit 20
  C. set ip precedence immediate in route-map Texas permit 10
  D. set ip precedence priority in route-map Texas permit 20
  B. set ip precedence critical in route-map Texas permit 20

• Question 292:

  Refer to the exhibit.

  

  Which action limits the access to R2 from 192.168.12.1?

  A. Swap sequence 10 with sequence 20 in access-list 100.
  B. Modify sequence 20 to permit tcp host 192.168.12.1 eq 22 any to access-list 100
  C. Swap sequence 20 with sequence 10 in access-list 100
  D. Modify sequence 10 to deny tcp any eq 22 any to access-list 100.
  A. Swap sequence 10 with sequence 20 in access-list 100.

• Question 293:

  Refer to the exhibit.

  

  A NOC team receives a ticket that data traffic from RA to RF is not forwarded when the link between the RC-RE path goes down. All routers learn loopback IP through the IGP protocol. Which configuration resolves?

  A. RD(config)#router bgp B5201 RD(config-router)# neighbor 10.10.10.2 update-source loopback 0
  B. RD(config-router)# neighbor bgp 65101 RB(config-router)# neighbor 10.10.10.3 ebgp-multihop 3
  C. RB(config)# router bgp 65101 RB(config)#neighbor 10.10.10.3 update-source loopback 0
  D. RD(config)# router bgp 65201 RDI(config-router)# neighbor 10.10.10.2 ebgp-multihop 3
  B. RD(config-router)# neighbor bgp 65101 RB(config-router)# neighbor 10.10.10.3 ebgp-multihop 3

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• Question 294:

  Refer to the exhibit.

  

  During troubleshooting it was discovered that the device is not reachable using a secure web browser. What is needed to fix the problem?

  A. permit tcp port 443
  B. permit udp port 465
  C. permit tcp port 465
  D. permit tcp port 22
  A. permit tcp port 443

• Question 295:

  Refer to the exhibit.

  

  A network is under a cyberattack. A network engineer connected to R1 by SSH and enabled the terminal monitor via SSH session to find the source and destination of the attack. The session was flooded with messages, which made it impossible for the engineer to troubleshoot the issue. Which command resolves this issue on R1?

  A. #terminal no monitor
  B. (config)#terminal no monitor C. #no terminal monitor
  D. (config)#no terminal monitor
  A. #terminal no monitor

• Question 296:

  You have been alerted that TCP traffic leaving an interface has been reduced to near zero, while UDP traffic is steadily increasing at the same time. What is this behavior called and what causes it?

  A. jitter, caused by lack of QoS
  B. latency, caused by the MTU
  C. starvation, caused improper configuration of QoS queues
  D. windowing, caused by network congestion
  C. starvation, caused improper configuration of QoS queues

  ---

  This behavior is called starvation and is caused by improper configuration of QoS queues. When TCP and UDP flows are assigned to the same QoS queue, they compete with one another. This is not a fair competition because the TCP packets will react to packet drops by throttling back TCP traffic, while UDP packets are oblivious to drops and will take up the slack created by the diminishing TCP traffic. The results from mixing UDP and TCP traffic in the same queue are:

  Starvation

  Latency

  Lower throughput

  While it is true that jitter can be caused by a lack of QoS, jitter is not what is being described in the scenario. Jitter is the variation in latency as measured in the variability over time of the packet latency across a network. This phenomenon seriously impacts time-sensitive traffic, such as VoIP, and can be prevented by placing this traffic in a high-priority QoS queue.

  While latency can be caused by the maximum transmission unit (MTU) in the network, this is not a case of latency, although latency may be one of the perceived effects of starvation. Latency is the delay in reception of packets. The MTU is the largest packet size allowed to be transmitted, and an MTU that is set too large can result in latency.

  While windowing can be caused by network congestion, this is not a case of windowing. This is a technique used to adjust the number of packets that can acknowledged at once by a receiving computer in a transmission. In times of congestion the window, or number of packets that can be acknowledged at a time, will be small. Later, when congestion goes down, the window size can be increased.

  Objective:

  Network Principles

  Sub-Objective:

  Describe UDP operations

  References:

  Design Guide > Service Provider Quality of Service > CE Guidelines for Collapsing Enterprise Classes > Mixing TCP with UDP

• Question 297:

  Refer to the exhibit.

  

  An IP SLA was configured on router R1 that allows the default route to be modified in the event that Fa0/0 loses reachability with the router R3 Fa0/0 interface. The route has changed to flow through router R2.

  Which debug command is used to troubleshoot this issue?

  A. debug ip flow
  B. debug ip sla error
  C. debug ip routing
  D. debug ip packet
  C. debug ip routing

  ---

  debug ip routing This command enables debugging messages related to the routing table.

• Question 298:

  Refer to the exhibit.

  

  The engineer configured and connected Router2 to Router1. The link came up but could not establish a Telnet connection to Router1 IPv6 address of 2001:DB8::1. Which configuration allows Router2 to establish a Telnet connection to Router1?

  A. jpv6 unicast-routing
  B. permit ICMPv6 on access list INGRESS for Router2 to obtain IPv6 address
  C. permit ip any any on access list EGRESS2 on Router1
  D. IPv6 address on GigabitEthernet0/0
  D. IPv6 address on GigabitEthernet0/0

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• Question 299:

  SNMPv2 has been used throughout a network to manage all of the network devices. You have been asked to migrate to an SNMPv3 solution instead. What is the biggest advantage to migrating from SNMPv2 to SNMPv3?

  A. Enhanced security, including encryption of passwords
  B. Enhanced performance, supporting more messages per minute.
  C. Enhanced scaling, supporting thousands more devices per network segment than SNMPv2.
  D. Using a push model instead of pull. SNMPv3 uses telemetry to push data to SNMP management stations in real time.
  A. Enhanced security, including encryption of passwords

• Question 300:

  Refer to the following output:

  Router#show ip nhrp detail

  1.1.2/8 via 10.2.1.2, Tunnel1 created 00:00:12, expire 01:59:47 TypE. dynamic, Flags: authoritative unique nat registered used NBMA address:

  10.12.1.2

  What does the authoritative flag mean in regards to the NHRP information?

  A. It was obtained directly from the next-hop server.
  B. Data packets are process switches for this mapping entry.
  C. NHRP mapping is for networks that are local to this router.
  D. The mapping entry was created in response to an NHRP registration request.
  E. The NHRP mapping entry cannot be overwritten
  A. It was obtained directly from the next-hop server.