Cisco 350-501 Online Practice Questions and Exam Preparation

Cisco 350-501 Online Questions & Answers

• Question 531:

  Refer to the exhibit.

  

  Which additional configuration must an engineer to the adge router to inject a default router into the MP-BGP address family for the internet_Shared_Services dedicated VRF?

  A. router bgp 100address-family vpnv4neighbor 1.1.1.1 activateneighbor 1.1.1.1 send-community extendedneighbor 1.1.1.1 next-hop-selfaddress-family ipv4 vrf internet_shared_servicenetwork 1.1.1.1
  B. router bgp 100address-family vpnv4neighbor 1.1.1.1 send-community bothexit-address-familyaddress-family ipv4 vrf internetno synchornizationnetwork 0.0.0.0
  C. router bgp 100address-family vpnv4neighbor 1.1.1.1 activateneighbor 1.1.1.1 send-community extendedexit-address-familyaddress-family ipv4 vrf internetno synchornizationnetwork 0.0.0.0
  D. router bgp 100address-family vpnv4neighbor 1.1.1.1 activateneighbor 1.1.1.1 send-community bothexit-address-familyaddress-family ipv4 vrf internet_shared_serviceno synchornizationnetwork 0.0.0.0
  D. router bgp 100address-family vpnv4neighbor 1.1.1.1 activateneighbor 1.1.1.1 send-community bothexit-address-familyaddress-family ipv4 vrf internet_shared_serviceno synchornizationnetwork 0.0.0.0

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  Explanation

• Question 532:

  What is the role of NSO?

  A. Provides public cloud services for customers that need Internet access.
  B. Controls the turn-up of a device.
  C. Provides network monitoring services for Layer 3 devices.
  D. Maintains data storage.
  B. Controls the turn-up of a device.

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  Explanation

• Question 533:

  How does TACACS+ facilitate secure connections for user access to network routers?

  A. The user's end device uses CHAP to securely query the network access server to authenticate the user via the TACACS+ protocol.
  B. The network access server communicates securely with a TACACS+ daemon to authenticate the user.
  C. The user provides a password over a secure connection to the TACACS+ server for authorization.
  D. The network access server communicates securely with the router via the TACACS+ protocol to authorize Telnet access by the user to specific parts of a router.
  B. The network access server communicates securely with a TACACS+ daemon to authenticate the user.

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  Explanation

• Question 534:

  In a L2VPN service, customer CE sends frames to PE1 using a CoS making value of 3. However , the remote CE receives those frames from PE2 with a CoS marking value of 0.

  Which description of this behavior is true?

  A. Egress PE2 is not configured with an outbound policy-map facing CE2 to preserve CoS marking
  B. Egress PE2 is marking EXP 0 upon label imposition
  C. Egress PE2 is not configured with mpls Ldp explicit-null command
  D. Ingress PE1 is remarking the CoS frame received from CE1 with valuye of 0
  D. Ingress PE1 is remarking the CoS frame received from CE1 with valuye of 0

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  Explanation

• Question 535:

  Refer to the exhibit.

  

  Which two statements about the IS-IS topology are true? (Choose two.)

  A. R1 and R4 are Level 2 neighbors.
  B. All four routers are operating as Level 1-2 routers.
  C. All four routers are operating as Level 2 routers only.
  D. All four routers are operating as Level 1 routers only.
  E. R1 and R2 are Level 2 neighbors.
  B. All four routers are operating as Level 1-2 routers.
  E. R1 and R2 are Level 2 neighbors.

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  Explanation

  default session IS-IS is L1-2, only R1 and R2 is neighbors, not directly neighbors R1 and R4

  The ISIS topology exhibit indicates that all four routers are configured as Level 1-2 routers, which means they can operate in both Level 1 and Level 2 IS-IS areas. This is evident from the net addresses that show a mix of area addresses, allowing for intra-area (Level 1) and inter-area (Level 2) routing. Additionally, R1 and R2 are Level 2 neighbors because they have different area addresses, allowing them to form Level 2 adjacencies and route between different areas.

  Implementing and Operating Cisco Service Provider Network Core Technologies course materials.

• Question 536:

  Refer to the exhibit.

  

  An engineer is configuring multitopology IS-IS for IPv6 on router R1. Which additional configuration must be applied to the router to complete the task?

  A. R1# configure terminalR1(config)# router isis area2R1(config-router)# address-family ipv6R1(config-router-af)# multi-topology Most Voted
  B. R1# configure terminalR1(config)# router isis area1R1(config-router)# metric-style wide level-2R1(config-router)# address-family ipv6R1(config-router-af)# multi-topology
  C. R1# configure terminalR1(config)# router isis area2R1(config-router)# metric-style wideR1(config-router)# address-family ipv6R1(config-router-af)# multi topology
  D. R1# configure terminalR1(config)# router isis area1R1(config-router)# metric-style wide level-1R1(config-router)# address-family ipv6 R1(config-router-af)# multi topology
  A. R1# configure terminalR1(config)# router isis area2R1(config-router)# address-family ipv6R1(config-router-af)# multi-topology Most Voted

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  Explanation

• Question 537:

  What does DWDM use to combine multiple optical signals?

  A. frequency
  B. IP protocols
  C. time slots
  D. wavelength
  D. wavelength

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  Explanation

  DWDM, or Dense Wavelength Division Multiplexing, uses different wavelengths of light to combine multiple optical signals. This method allows for the transmission of various data streams simultaneously over a single optical fiber. By using closely spaced wavelengths, DWDM can fit more channels onto a single fiber, significantly increasing the capacity and efficiency of fiber-optic networks.

  The explanation is based on the information available from the web search results on DWDM, which aligns with the principles outlined in the Cisco Service Provider source book.

• Question 538:

  Refer to the exhibit.

  

  A company recently deployed a new network using OSPF in the core to share routes. The network administrator selected OSPF as the routing protocol because of its ability to maintain a route database. When the new network was started up, all routers booted normally, but the link between routers R1 and R2 failed to come up. The two routers are located in the same rack at the data center. Which task should an engineer perform to correct the problem?

  A. Synchronize the dead timers.
  B. Change one of the OSPF router IDs so that the router IDs are in different subnets
  C. Change the OSPF process ID on one of the devices so that the two IDs match
  D. Configure the MTUs on the interface to match.
  D. Configure the MTUs on the interface to match.

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  Explanation

  When OSPF routers establish adjacency, they must agree on the MTU size on the connecting interface. If the MTUs do not match, the routers will not form an OSPF adjacency, and the link between them will not come up. Therefore, configuring the MTUs on the interfaces to match is essential for the OSPF network to function correctly.

  Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR)

• Question 539:

  Refer to the exhibit

  

  A user is performing QoS marking on internet traffic and sending it with IPv4 and IPv6 headers on the provider edge device PE1. IPv4 traffic is classified with DSCP 4 and IPv6 traffic is classified with DSCP 6.

  Which action must the engineer take to begin implementing a QoS configuration on PE1 for the IPv6 traffic?

  A. Create an access list that includes any IPv6 traffic and apply it to CM-20.
  B. Create access list IPv6-match and configure match ip dscp 4 and match ip dscp 6 in class maps CM-10 and CM-20.
  C. Configure match ip dscp 4 in class map CM-10 and match ip dscp 6 in class map CM-20.
  D. Create access list IPv6-filter and remove DSCP value 4 and 6 in class maps CM-10 and CM-20.
  A. Create an access list that includes any IPv6 traffic and apply it to CM-20.

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  Explanation

• Question 540:

  Refer to the exhibit.

  

  An engineer is securing a customer's network.

  Which command must the engineer use to complete this configuration to prevent a DoS attack?

  A. neighbor ttl-security
  B. ebgp-multihop
  C. neighbor ebgp-multihop
  D. ttl-security
  D. ttl-security

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  Explanation

  The TTL security mechanism is used to protect a router from receiving BGP sessions that are not originated from the expected peer. It drops incoming TCP segments whose TTL value is not equal to or greater than the expected minimum value, thus helping in preventing DoS attacks that could be initiated from an unauthorized source pretending to be a legitimate BGP peer. References: Implementing and Operating Cisco Service Provider Network Core Technologies