Cisco 350-401 Online Practice Questions and Exam Preparation

Cisco 350-401 Online Questions & Answers

• Question 651:

  A technician needs to find the MAC address of a connecting router. Which of the following commands should the technician use?

  A. arp
  B. traceroute
  C. nslookup
  D. ping
  A. arp

• Question 652:

  Refer to the exhibit. Which command must be applied to R2 for an OSPF neighborship to form?

  

  A. network 20.1.1.2.0.0.0.0 area 0
  B. network 20.1.1.2 255.255.0.0. area 0
  C. network 20.1.1.2.0.0.255.255 area 0
  D. network 20.1.1.2 255.255.255 area 0
  A. network 20.1.1.2.0.0.0.0 area 0

  ---

  Explanation

  The network 20.0.0.0 0.0.0.255 area 0 command on R2 did not cover the IP address of Fa1/1 interface of R2 so OSPF did not run on this interface. Therefore we have to use the command network 20.1.1.2 0.0.255.255 area 0 to turn on OSPF on this interface.

  Note: The command network 20.1.1.2 0.0.255.255 area 0 can be used too so this answer is also correct but answer C is the best answer here. The network 0.0.0.0 255.255.255.255 area 0 command on R1 will run OSPF on all active

• Question 653:

  SIMULATION Guidelines

  This is a lab item in which tasks will be performed on virtual devices.

  1. Refer to the Tasks tab to view the tasks for this lab item.

  2. Refer to the Topology tab to access the device console(s) and perform the tasks.

  3. Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.

  4. All necessary preconfigurations have been applied.

  5. Do not change the enable password or hostname for any device.

  6. Save your configurations to NVRAM before moving to the next item.

  7. Click Next at the bottom of the screen to submit this lab and move to the next question.

  8. When Next is clicked, the lab closes and cannot be reopened.

  Topology

  

  Tasks

  

  A. See the solution below in Explanation.
  B. Place Holder
  C. Place Holder
  D. Place Holder
  A. See the solution below in Explanation.

  ---

  Explanation

  Solution:

  R22

  config t

  int tunn0

  vrf forwarding FINANCE

  ip add 10.11.22.2 255.255.255.0

  tunn so e0/0

  tunn dest 209.165.200.230

  no shut

  int et0/1

  vrf forward FINANCE

  ip add 10.22.22.1 255.255.255.252

  no shut

  ip route vrf FINANCE 10.10.111.0 255.255.255.0 tunn0

  

• Question 654:

  What is a characteristic of Wi-Fi channels?

  A. The 2.4-GHz band has 24 non-overlapping channels.
  B. Devices that connect to the same Wi-Fi channel reside in the same collision domain.
  C. Wi-Fi channels are spaced 30 MHz apart.
  D. The 5-GHz band offers 11 different channels for Wi-Fi clients.
  B. Devices that connect to the same Wi-Fi channel reside in the same collision domain.

• Question 655:

  Which Cisco Catalyst SD-WAN component is responsible for distributing data plane traffic policies?

  A. vBond
  B. vManage
  C. vSmart
  D. WAN edge
  C. vSmart

• Question 656:

  How does CEF switching differ from process switching on Cisco devices?

  A. CEF switching saves memory by sorting adjacency tables in dedicate memory on the line cards, and process switching stores all tables in the main memory
  B. CEF switching uses adjacency tables built by the CDP protocol, and process switching uses the routing table
  C. CEF switching uses dedicated hardware processors, and process switching uses the main processor
  D. CEF switching uses proprietary protocol based on IS-IS for MAC address lookup, and process switching uses in MAC address table
  B. CEF switching uses adjacency tables built by the CDP protocol, and process switching uses the routing table

  ---

  Explanation

  Cisco Express Forwarding (CEF) switching is a proprietary form of scalable switching intended to tackle the problems associated with demand caching. With CEF switching, the information which is conventionally stored in a route cache is split up over several data structures. The CEF code is able to maintain these data structures in the Gigabit Route Processor (GRP), and also in slave processors such as the line cards in the 12000 routers. The data structures that provide optimized lookup for efficient packet forwarding include:

  1. The Forwarding Information Base (FIB) table - CEF uses a FIB to make IP destination prefix-based switching decisions. The FIB is conceptually similar to a routing table or information base. It maintains a mirror image of the forwarding information contained in the IP routing table. When routing or topology changes occur in the network, the IP routing table is updated, and these changes are reflected in the FIB. The FIB maintains next-hop address information based on the information in the IP routing table.

  2. Because there is a one-to-one correlation between FIB entries and routing table entries, the FIB contains all known routes and eliminates the need for route cache maintenance that is associated with switching paths such as fast switching and optimum switching.

  3. Adjacency table - Nodes in the network are said to be adjacent if they can reach each other with a single hop across a link layer. In addition to the FIB, CEF uses adjacency tables to prepend Layer 2 addressing information. The adjacency table maintains Layer 2 next-hop addresses for all FIB entries.

  CEF can be enabled in one of two modes:

  1. Central CEF mode - When CEF mode is enabled, the CEF FIB and adjacency tables reside on the route processor, and the route processor performs the express forwarding. You can use CEF mode when line cards are not available for CEF switching, or when you need to use features not compatible with distributed CEF switching.

  2. Distributed CEF (dCEF) mode - When dCEF is enabled, line cards maintain identical copies of the FIB and adjacency tables. The line cards can perform the express forwarding by themselves, relieving the main processor - Gigabit Route Processor (GRP) - of involvement in the switching operation. This is the only switching method available on the Cisco 12000 Series Router.

  CEF uses an Inter-Process Communication (IPC) mechanism to ensure synchronization of FIBs and adjacency tables on the route processor and line cards.

  For more information about CEF switching, see Cisco Express Forwarding (CEF) White Paper.

• Question 657:

  Which statement about route targets is true when using VRF-Lite?

  A. When BGP is configured, route targets are transmitted as BGP standard communities.
  B. Route targets control the import and export of routes into a customer routing table.
  C. Route targets allow customers to be assigned overlapping addresses.
  D. Route targets uniquely identify the customer routing table.
  B. Route targets control the import and export of routes into a customer routing table.

  ---

  Explanation

  Answer 'Route targets allow customers to be assigned overlapping addresses' and answer 'Route targets uniquely identify the customer routing table' are not correct as only route distinguisher (RD) identifies the customer routing table and "allows customers to be assigned overlapping addresses".

  Answer 'When BGP is configured, route targets are transmitted as BGP standard communities' is not correct as "When BGP is configured, route targets are transmitted as BGP extended communities"

• Question 658:

  What does a router do when configured with the default DNS lookup settings, and a URL is entered on the CLI?

  A. initiates a ping request to the URL
  B. prompts the user to specify the desired IP address
  C. continuously attempts to resolve the URL until the command is cancelled
  D. sends a broadcast message in an attempt to resolve the URL
  D. sends a broadcast message in an attempt to resolve the URL

• Question 659:

  Refer to the exhibit.

  

  How to make DSW1 the primary root for VLAN 10? (Choose two)

  A. DWS1(config-if)#spanning-tree port-priority 0
  B. DSW2(config-if)#spanning-tree port-priority 16
  C. DSW1(config-if)#interface gi1/3
  D. DSW2(config-if)#interface gi1/3
  E. DSW2(config-if)#spanning-tree port-priority 128
  A. DWS1(config-if)#spanning-tree port-priority 0
  C. DSW1(config-if)#interface gi1/3

  ---

  Explanation

  Maybe something was wrong with this question but we still have to choose the best answers.

• Question 660:

  SIMULATION

  Guidelines

  This is a lab item in which tasks will be performed on virtual devices.

  1. Refer to the Tasks tab to view the tasks for this lab item.

  2. Refer to the Topology tab to access the device console(s) and perform the tasks.

  3. Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.

  4. All necessary preconfigurations have been applied.

  5. Do not change the enable password or hostname for any device.

  6. Save your configurations to NVRAM before moving to the next item.

  7. Click Next at the bottom of the screen to submit this lab and move to the next question.

  8. When Next is clicked, the lab closes and cannot be reopened.

  Topology

  

  Tasks

  EIGRP is preconfigured on all routers. Configure R10 and R20 to complete these tasks.

  Task 1:

  Modify the existing ACL on R10 so that EIGRP routes are received from R20 and R30.

  1. The modification should only allow EIGRP routes to pass.

  2. Do not remove any configuration from R10 to achieve this task.

  Task 2:

  Configure CoPP on R20 to achieve these results:

  1. Permit ICMP traffic from 192.168.24.0/24.

  2. Limit traffic to 8,000 bps.

  3. Discard additional packets.

  A. See the solution below in Explanation.
  B. Place Holder
  C. Place Holder
  D. Place Holder
  A. See the solution below in Explanation.

  ---

  Explanation