Cisco 300-410 Online Practice Questions and Exam Preparation

Cisco 300-410 Online Questions & Answers

• Question 21:

  While working with software images, an engineer observes that Cisco DNA Center cannot upload its software image directly from the device. Why is the image not uploading?

  A. The device must be resynced to Cisco DNA Center.
  B. The software image for the device is in install mode.
  C. The device has lost connectivity to Cisco DNA Center.
  D. The software image for the device is in bundle mode
  B. The software image for the device is in install mode.

  ---

  Upload Software Images for Devices in Install Mode

  The Image Repository page might show a software image as being in Install Mode. When a device is in Install Mode, Cisco DNA Center is unable to upload its software image directly from the device. When a device is in install mode, you must first manually upload the software image to the Cisco DNA Center repository before marking the image as golden, as shown in the following steps.

  https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/1-2-10/user_guide/b_cisco_dna_center_ug_1_2_10/b_dnac_ug_1_2_10_chapter_0100.html

• Question 22:

  Refer to the exhibit.

  

  The administrator configured the network devise for end-to-end reachability, but the ASBRs are not propagation routes to each other.

  Which set of configuration resolves this issue?

  A. router bgp 100 neighbor 10.1.1.1 next-hop-self neighbor 10.1.2.2 next-hop-self neighbor 10.1.3.3 next-hop-self
  B. router bgp 100 neighbor 10.1.1.1 update-source Loopback0 neighbor 10.1.2.2 update-source Loopback0 neighbor 10.1.3.3 update-source Loopback0
  C. router bgp 100 neighbor 10.1.1.1 route-reflector-client neighbor 10.1.2.2 route-reflector-client neighbor 10.1.3.3 route-reflector-client
  D. router bgp 100 neighbor 10.1.1.1 ebgp-multihop neighbor 10.1.2.2 ebgp-multihop neighbor 10.1.3.3 ebgp-muttihop
  C. router bgp 100 neighbor 10.1.1.1 route-reflector-client neighbor 10.1.2.2 route-reflector-client neighbor 10.1.3.3 route-reflector-client

• Question 23:

  What are the two reasons for RD and VPNv4 addresses in an MPLS Layer 3 VPN? (Choose two.)

  A. VPN RT communities are used to identify customer unique routes.
  B. When the PE redistributes customer routes into MP-BGP, they must be unique.
  C. They are on a CE device to use for static configuration.
  D. They are used for a BGP session with the CE device.
  E. RD is prepended to each prefix to make routes unique.
  B. When the PE redistributes customer routes into MP-BGP, they must be unique.
  E. RD is prepended to each prefix to make routes unique.

  ---

  As its name implies, a route distinguisher (RD) distinguishes one set of routes (one VRF) from another. It is a unique number prepended to each route within a VRF to identify it as belonging to that particular VRF or customer. An RD is carried along with a route via MP-BGP when exchanging VPN routes with other PE routers. https://packetlife.net/blog/2013/jun/10/route-distinguishers-and-route-targets/

• Question 24:

  Which two label distribution methods are used by routers in MPLS? (Choose two.)

  A. LDP discovery hello message
  B. LDP session protection message
  C. downstream unsolicited
  D. downstream on demand
  E. targeted hello message
  C. downstream unsolicited
  D. downstream on demand

  ---

  After the LDP TCP connection session is established, the LSRs negotiate the session parameters, including the method of label distribution to be used. Two methods are available:

  Downstream Unsolicited: An LSR advertises label mappings to peers without being asked to.

  Downstream on Demand: An LSR advertises label mappings to a peer only when the peer asks for them.

  https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ldp/configuration/xe-16-11/mp-ldp-xe-16-11-book/mp-ldp.html

• Question 25:

  Refer to the exhibit.

  

  The network administrator must configure Cape Town to reach Dubai via Tokyo based on the speeds provided by the service provider. It was noticed that Cape Town is reaching Dubai directly and failed to meet the requirement.

  Which configuration fixes the issue?

  A. CapeTown router eigrp 100 variance 2
  B. CapeTown interface E 0/0 bandwidth 5000 interface E 0/1 bandwidth 10000
  C. CapeTown interface E 0/0 bandwidth 5000 interface E 0/1 bandwidth 10000 Dubai interface E 0/0 bandwidth 50000 interface E 0/1 bandwidth 5000 Tokyo interface E 0/0 bandwidth 50000 interface E 0/1 bandwidth 10000
  D. Dubai router eigrp 100 variance 2
  C. CapeTown interface E 0/0 bandwidth 5000 interface E 0/1 bandwidth 10000 Dubai interface E 0/0 bandwidth 50000 interface E 0/1 bandwidth 5000 Tokyo interface E 0/0 bandwidth 50000 interface E 0/1 bandwidth 10000

  ---

• Question 26:

  A network administrator opens a telnet connection to the router and gets the message:

  R1#telnet 10.1.1.2

  Trying 10 1.1 2 Open

  (Connection to 10.1.1.2 closed by foreign host)

  Router R2 is configured with enable secret and password commands.

  Which action resolves the issue?

  A. Configure the logging synchronous command on line vty.
  B. Configure the exec command on line vty.
  C. Configure the login local command on line vty
  D. Configure the enable password command on line vty.
  C. Configure the login local command on line vty

• Question 27:

  What are the two prerequisites of setting up DMVPN tunnel? (Choose two.)

  A. Before a multipoint GRE (mGRE) and IPsec tunnel can be established, define an Internet Key Exchange (IKE) policy by using the crypto isakmp policy command.
  B. The Public IP's of the routers should be able to ping each other.
  C. To enable 2547oDMPVN - Traffic Segmentation Within DMVPN configure multiprotocol label switching (MPLS) by using the mpls ip command
  D. It is mandatory to use wildcard preshared keys to build the DMVPN tunnel
  E. DMVPN can work on all OEM devices that support IKE.
  A. Before a multipoint GRE (mGRE) and IPsec tunnel can be established, define an Internet Key Exchange (IKE) policy by using the crypto isakmp policy command.
  C. To enable 2547oDMPVN - Traffic Segmentation Within DMVPN configure multiprotocol label switching (MPLS) by using the mpls ip command

• Question 28:

  Refer to the exhibit.

  

  

  Jitter on the link between R101 and R201 was tested for voice traffic over port 16384 without the control communication on port 1967. Which command enables R201 to receive RTT for the configured IP SLA?

  A. ip sla responder tcp-connect port 1967
  B. ip sla responder udp-echo ipaddress 2.2.2.2 port 16384
  C. ip sla responder udp-echo ipaddress 1.1.1.1 port 16384
  D. ip sla responder auto-register 1.1.1.1
  B. ip sla responder udp-echo ipaddress 2.2.2.2 port 16384

• Question 29:

  Refer to the exhibit. The Internet traffic should always prefer Site-A ISP-1 if the link and BGP connection are up; otherwise, all Internet traffic should go to ISP-2. Redistribution is configured between BGP and OSPF routing protocols, and it is not working as expected.

  

  What action resolves the issue?

  A. Set OSPF Cost 200 at Site-A RTR1, and set OSPF Cost 100 at Site-B RTR2.
  B. Set metric-type 2 at Site-A RTR1, and set metric-type 1 at Site-B RTR2.
  C. Set metric-type 1 at Site-A RTR1, and set metric-type 2 at Site-B RTR2.
  D. Set OSPF Cost 100 at Site-A RTR1, and set OSPF Cost 200 at Site-B RTR2.
  C. Set metric-type 1 at Site-A RTR1, and set metric-type 2 at Site-B RTR2.

  ---

  OSPF type 1 route is always preferred over a type 2 route for the same destination so we can set metric-type 1 at Site-A RTR1 so that it is preferred over Site-B RTR2.

  Note:

  Routes are redistributed in OSPF as either type 1 (E1) routes or type 2 (E2) routes, with type 2 being the default.

  1. A type 1 route has a metric that is the sum of the internal OSPF cost and the external redistributed cost.

  2. A type 2 route has a metric equal only to the redistributed cost.

  3. If routes are redistributed into OSPF as type 2 then every router in the OSPF domain will see the same cost to reach the external networks.

  4. If routes are redistributed into OSPF as type 1, then the cost to reach the external networks could vary from router to router.

• Question 30:

  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?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

  ---

  By default BGP advertises all prefixes to external BGP neighbors. This means that if you are multihomed (connected to two or more ISPs) then you might become a transit AS. For example, ISP 2 in AS 200 can send traffic to your router in AS 100 to reach ISP 3 in AS 300 because you advertised prefixes in ISP 3 to ISP 2. This is what will be seen in the BGP routing table of ISP1: