300-101 practice test

1. Question 1 · 1

   Which parameter in an SNMPv3 configuration offers authentication and encryption?

   Choose one answer.

   • auth
   • noauth
   • priv
   • secret

2. Question 2 · 1

   Which IPv6 address type is seen as the next-hop address in the output of the show ipv6 rip RIPng database command?

   Choose one answer.

   • link-local
   • global
   • site-local
   • anycast
   • multicast

3. Question 3 · 1

   Which statement describes what this command accomplishes when inside and outside interfaces are correctly identified for NAT? ip nat inside source static tcp 192.168.1.50 80 209.165.201.1 8080 extendable

   Choose one answer.

   • It allows host 192.168.1.50 to access external websites using TCP port 8080.
   • It allows external clients coming from public IP 209.165.201.1 to connect to a web server at 192.168.1.50.
   • It allows external clients to connect to a web server hosted on 192.168.1.50.
   • It represents an incorrect NAT configuration because it uses standard TCP ports.

4. Question 4 · 1

   A network administrator notices that the BGP state and logs are generated for missing BGP hello keepalives. What is the potential problem?

   Choose one answer.

   • hello timer mismatch
   • MTU mismatch
   • incorrect neighbor options
   • BGP path MTU enabled

   Read explanation

   Introduction - This document describes how to determine if internal or external Border Gateway Protocol (BGP) neighbor flaps are caused by maximum transmission unit (MTU) issues. Problem - BGP neighbors form; however, at the time of prefix exchange, the BGP state drops and the logsgenerate missing BGP hello keepalives or the other peer terminates the session. References:

5. Question 5 · 1

   Refer to the exhibit. Router 1 cannot ping router 2 via the Frame Relay between them. Which two statements describe the problems? (Choose two.)

   Choose all answers that apply.

   

   • Frame Relay map is configured.
   • DLCI is active.
   • DLCI isinactive or deleted.
   • Encapsulation is mismatched.
   • An access list is needed to allow ping.

6. Question 6 · 1

   An engineer is using a network sniffer to troubleshoot DHCPv6 between a router and hosts on the LAN with the following configuration: interface Ethernet0 ipv6 dhcp server DHCPSERVERPOOL rapid-commit ! Which two DHCP messages will appear in the sniffer logs? (Choose two.)

   Choose all answers that apply.

   • reply
   • request
   • advertise
   • Acknowledge
   • solicit
   • accept

   Read explanation

   The DHCPv6 client can obtain configuration parameters from a server either through a rapid two-message exchange (solicit, reply) or through a four-message exchange (solicit, advertise, request, and reply). By default, the four-message exchange is used. When the rapid-commit option is enabled by both the client and the server, the two-message exchange is used. References:

7. Question 7 · 1

   You are configuring a Microsoft client to call a PPP server using CHAP. Only the client will be authenticated, but the client's password has expired and must be changed. Which PPP server configuration allows the call to be completed?

   Choose one answer.

   • ppp authentication ms-chap-v2
   • ppp authentication chap callin
   • ppp authentication chap
   • ppp authentication ms-chap-v2 callin
   • ppp authentication ms-chap callin

8. Question 8 · 1

   Refer to the exhibit. Which one statement is true?

   Choose one answer.

   

   • Traffic from the 172.16.0.0/16 network will be blocked by the ACL.
   • The 10.0.0.0/8 network will not be advertised by Router B because the network statement for the 10.0.0.0/8 network is missing from Router B.
   • The 10.0.0.0/8 network will not be in the routing table on Router B.
   • Users on the 10.0.0.0/8 network can successfully ping users on the 192.168.5.0/24 network, but users on the 192.168.5.0/24 cannot successfully ping users on the 10.0.0.0/8 network.
   • Router B will not advertise the 10.0.0.0/8 network because it is blocked by the ACL.

   Read explanation

   You can filter what individual routes are sent (out) or received (in) to any interface within your EIGRP configuration. One example is noted above. If you filter outbound, the next neighbor(s) will not know about anything except the 172.16.0.0/16 route and therefore won't send it to anyone else downstream. If you filter inbound, YOU won't know about the route and therefore won't send it to anyone else downstream.

9. Question 9 · 1

   Refer to the exhibit. For which reason is EIGRP failing to redistribute the default route?

   Choose one answer.

   

   • The EIGRP process is missing the no auto-summary command.
   • The EIGRP process is missing the default metric.
   • The route-map statement is missing the match any keyword.
   • The EIGRP process is missing the router ID.

10. Question 10 · 1

    Refer to the exhibit. Why is the default route not removed when 172.20.20.2 stops replying to ICMP echos?

    Choose one answer.

    

    • The source-interface is configured incorrectly.
    • The default route is missing the track feature.
    • The destination must be 172.30.30.2 for icmp-echo.
    • The threshold value is wrong.

11. Question 11 · 1

    In which scenario can asymmetric routing occur?

    Choose one answer.

    • active/active firewall setup
    • redundant routers running VRRP
    • active/standby firewall setup
    • single path in and out of the network

    Read explanation

    What is Asymmetric Routing? In Asymmetric routing, a packet traverses from a source to a destination in one path and takes a different path when it returns to the source. This is commonly seen in Layer-3 routed networks. Asymmetric routing is when a packet returns on a patch that is different from a path that the traffic was sent. This can be seen in normal situations when there are multiple paths to/from a destination. It can also be seen in misconfiguration situations such as a server having two NIC's for load balancing and it's instead routing between them.

12. Question 12 · 1

    Which feature can mitigate fragmentation issues within network segments that are between GRE endpoints?

    Choose one answer.

    • TCP Flow Control
    • TCP MSS
    • PMTU
    • ICMP DF bit

13. Question 13 · 1

    If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

    Choose one answer.

    • The lowest IP address of any physical interface
    • The highest IP address of any physical interface
    • The lowest IP address of any logical interface
    • The highest IP address of any logical interface

14. Question 14 · 1

    Which security feature can you enable to control access to the vty lines on a router?

    Choose one answer.

    • Exec-time out
    • Logging
    • Username and password
    • Transport output

15. Question 15 · 1

    Which two commands must you configure in the calling router to support the PPPoE client? (Choose two.)

    Choose all answers that apply.

    • pppoe enable group
    • peer default ip address pool
    • pppoe-client-dial-pool-number
    • bba-group pppoe
    • mtu

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