Cisco 350-401 Online Practice Questions and Exam Preparation

Cisco 350-401 Online Questions & Answers

• Question 1091:

  Where in Cisco DNA Center is documentation of each API call, organized by its functional area?

  A. Developer Toolkit
  B. platform management
  C. platform bundles
  D. Runtime Dashboard
  A. Developer Toolkit

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  Explanation

  https://developer.cisco.com/docs/dna-center/#!api-quick-start/cisco-dna-center-platform-api-overview

• Question 1092:

  Which unit of measure is used to measure wireless RF SNR?

  A. mW
  B. bBm
  C. dB
  D. dBi
  C. dB

• Question 1093:

  Which two actions, when applied in the LAN network segment, will facilitate Layer 3 CAPWAP discovery for lightweight AP? (Choose two.)

  A. Utilize DHCP option 17.
  B. Configure WLC IP address on LAN switch.
  C. Utilize DHCP option 43.
  D. Configure an ip helper-address on the router interface
  E. Enable port security on the switch port
  C. Utilize DHCP option 43.
  D. Configure an ip helper-address on the router interface

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  Explanation

  In a Cisco Unified Wireless network, the LAPs must first discover and join a WLC before they can service wireless clients.

  However, this presents a question: how did the LAPs find the management IP address of the controller when it is on a different subnet? If you do not tell the LAP where the controller is via DHCP option 43, DNS resolution of "Cisco-capwap- controller.local_domain", or statically configure it, the LAP does not know where in the network to find the management interface of the controller.

  https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/119286-lap-notjoin-wlc-tshoot.html

• Question 1094:

  Refer lo the exhibit.

  

  Which address type is 10.10.10.10 configured for?

  A. inside global
  B. outside local
  C. outside global
  D. inside local
  D. inside local

• Question 1095:

  Which feature is needed to maintain the IP address of a client when an inter- controller Layer 3 roam is performed between two WLCs that are using different mobility groups?

  A. interface groups
  B. RF groups
  C. AAA override
  D. auto anchor
  D. auto anchor

• Question 1096:

  What is a benefit of Type 1 hypervisors?

  A. Administrators are able to load portable virtual machine packages in OVA or QCOW2 formats.
  B. Network engineers are able to create virtual networks o interconnect virtual machines in Layer 2 topologies
  C. Operators are able to leverage orchestrators to manage workloads that run on multiple Type 1 hypervisors
  D. Storage engineers are able to leverage VMDK files to provide storage to virtual machine.
  B. Network engineers are able to create virtual networks o interconnect virtual machines in Layer 2 topologies

• Question 1097:

  A GRE tunnel is down with the error message %TUN-5-RECUR DOWN:

  

  Which two options describe possible causes of the error? (Choose two)

  A. There is link flapping on the tunnel
  B. Incorrect destination IP addresses are configured on the tunnel
  C. The tunnel mode and tunnel IP address are misconfigured
  D. There is instability in the network due to route flapping
  E. The tunnel destination is being routed out of the tunnel interface
  D. There is instability in the network due to route flapping
  E. The tunnel destination is being routed out of the tunnel interface

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  Explanation

  The %TUN-5-RECURDOWN: Tunnel0 temporarily disabled due to recursive routing error message means that the generic routing encapsulation (GRE) tunnel router has discovered a recursive routing problem.

  This condition is usually due to one of these causes:

  + A misconfiguration that causes the router to try to route to the tunnel destination address using the tunnel interface itself (recursive routing) + A temporary instability caused by route flapping elsewhere in the network Reference: https:// www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway- routingprotocol- eigrp/22327-gre-flap.html

• Question 1098:

  How does a Type 2 hypervisor function?

  A. It runs on a virtual server and includes its own operating system.
  B. It runs directly on a physical server and includes its own operating system.
  C. It is installed as an application on an already installed operating system.
  D. It enables other operating systems to run on it.
  C. It is installed as an application on an already installed operating system.

• Question 1099:

  Which QoS mechanism will prevent a decrease in TCP performance?

  A. Shaper
  B. Rate-Limit
  C. Policer
  D. Fair-Queue
  E. WRED
  F. LLQ
  E. WRED

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  Explanation

  Weighted Random Early Detection (WRED) is just a congestion avoidance mechanism. WRED drops packets selectively based on IP precedence. Edge routers assign IP precedences to packets as they enter the network. When a packet arrives, the following events occur:

  The average queue size is calculated.

  2. If the average is less than the minimum queue threshold, the arriving packet is queued.

  3. If the average is between the minimum queue threshold for that type of traffic and the maximum threshold for the interface, the packet is either dropped or queued, depending on the packet drop probability for that type of traffic.

  4. If the average queue size is greater than the maximum threshold, the packet is dropped. WRED reduces the chances of tail drop (when the queue is full, the packet is dropped) by selectively dropping packets when the output interface begins to show signs of congestion (thus it can mitigate congestion by preventing the queue from filling up). By dropping some packets early rather than waiting until the queue is full, WRED avoids dropping large numbers of packets at once and minimizes the chances of global synchronization. Thus, WRED allows the transmission line to be used fully at all times. WRED generally drops packets selectively based on IP precedence. Packets with a higher IP precedence are less likely to be dropped than packets with a lower precedence. Thus, the higher the priority of a packet, the higher the probability that the packet will be delivered. Reference: https://www.cisco.com/c/en/ us/td/docs/ios-xml/ios/qos_conavd/ configuration/15- mt/qos-conavd-15-mt-book/qos-conavd-cfg- wred.html WRED is only useful when the bulk of the traffic is TCP/IP traffic. With TCP, dropped packets indicate congestion, so the packet source will reduce its transmission rate. With other protocols, packet sources may not respond or may resend dropped packets at the same rate. Thus, dropping packets does not decrease congestion. Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_conavd/ configuration/xe- 16/qos- conavd-xe-16-book/qos-conavd-oview.html Note: Global synchronization occurs when multiple TCP hosts reduce their transmission rates in response to congestion. But when congestion is reduced, TCP hosts try to increase their transmission rates again simultaneously (known as slow-start algorithm), which causes another congestion. Global synchronization produces this graph:

  

• Question 1100:

  Refer to the exhibit. Which configuration enables OSPF for area 0 interfaces to establish adjacency with a neighboring router with the same VRF? ip vrf CCNP rd 1:1

  interface Ethernet1 ip vrf forwarding CCNP ip address 10.1.1.1 255.255.255.252 !

  interface Ethernet2 ip vrf forwarding CCNP ip address 10.2.2.2 255.2555.255.252

  A. router ospf 1 vrf CCNPnetwork 10.1.1.1 0.0.0.0 area 0network 10.2.2.2 0.0.0.0 area 0
  B. router ospf 1interface Ethernet1ip ospf 1 area 0.0.0.0interface Ethernet2ip ospf 1 area 0.0.0.0
  C. router ospf 1 vrf CCNPinterface Ethernet1ip ospf 1 area 0.0.0.0interface Ethernet2ip ospf 1 area 0.0.0.0
  D. router ospf 1 vrf CCNPnetwork 10.0.0.0 0.0.255.255 area 0
  A. router ospf 1 vrf CCNPnetwork 10.1.1.1 0.0.0.0 area 0network 10.2.2.2 0.0.0.0 area 0