300-410 Exam Dumps - Implementing Cisco Enterprise Advanced Routing and Services (300-410 ENARSI)

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Question # 73

Refer to the exhibit.

An engineer is monitoring reachability of the configured default routes to ISP1 and ISP2. The default route from ISP1 is preferred if available. How is this issue resolved?

Use the icmp-echo command to track both default routes

Use the same AD for both default routes

Start IP SLA by matching numbers for track and ip sla commands

Start IP SLA by defining frequency and scheduling it

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Question # 74

Drag and Drop the IPv6 First-Hop Security features from the left onto the definitions on the right.

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Question # 75

Which statement about route distinguishers in an MPLS network is true?

Route distinguishers allow multiple instances of a routing table to coexist within the edge router.

Route distinguishers are used for label bindings.

Route distinguishers make a unique VPNv4 address across the MPLS network.

Route distinguishers define which prefixes are imported and exported on the edge router.

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Question # 76

Refer to the exhibit.

A network engineer for AS64512 must remove the inbound and outbound traffic from link A during maintenance without closing the BGP session so that there ............ a backup link over link A toward the ASN. Which BGP configuration on R1 accomplishes this goal?

Option A

Option B

Option C

Option D

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Question # 77

Which command is used to check IP SLA when an interface is suspected to receive lots of traffic with options?

show track

show threshold

show timer

show delay

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Question # 78

Which two protocols can cause TCP starvation? (Choose two)

TFTP

SNMP

SMTP

HTTPS

FTP

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Question # 79

After some changes in the routing policy, it is noticed that the router in AS 45123 is being used as a transit AS router for several service provides. Which configuration ensures that the branch router in AS 45123 advertises only the local networks to all SP neighbors?

Option A

Option B

Option C

Option D

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Question # 80

Drag and drop the DHCP messages from the left onto the correct uses on the right.

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Answer:

Explanation:

DHCPACK

The server-to-client communication with configuration parameters, including committed network address.

DHCPINFORM

The client-to-server communication, asking for only local configuration parameters that the client already has externally configured as an address.

DHCPNAK

The server-to-client communication, refusing the request for configuration parameter.

DHCPDECLINE

The client-to-server communication, indicating that the network address is already in use

[Reference: https://www.cisco.com/c/en/us/support/docs/ip/dynamic-address-allocation-resolution/27470-100.html, DHCPINFORM: If a client has obtained a network address through some other means or has a manually configured IP address, a client workstation may use a DHCPINFORM request message to obtain other local configuration parameters, such as the domain name and Domain Name Servers (DNSs). DHCP servers receiving a DHCPINFORM message construct a DHCPACK message with any local configuration parameters appropriate for the client without allocating a new IP address. This DHCPACK will be sent unicast to the client., DHCPNAK: If the selected server is unable to satisfy the DHCPREQUEST message, the DHCP server will respond with a DHCPNAK message. When the client receives a DHCPNAK message, or does not receive a response to a DHCPREQUEST message, the client restarts the configuration process by going into the Requesting state. The client will retransmit the DHCPREQUEST at least four times within 60 seconds before restarting the Initializing state., DHCPACK: After the DHCP server receives the DHCPREQUEST, it acknowledges the request with a DHCPACK message, thus completing the initialization process., DHCPDECLINE: The client receives the DHCPACK and will optionally perform a final check on the parameters. The client performs this procedure by sending Address Resolution Protocol (ARP) requests for the IP address provided in the DHCPACK. If the client detects that the address is already in use by receiving a reply to the ARP request, the client will send a DHCPDECLINE message to the server and restart the configuration process by going into the Requesting state., , Reference:, https://www.cisco.com/c/en/us/support/docs/ip/dynamic-address-allocation-resolution/27470-100.html, ]

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