6. Describe the Functionality of These IP Services: DHCP, DNS, NAT, SNMP, NTP 200-901 Practice Questions (Page 4)

Questions 16–20

1. 16expert · hard

   A network monitoring system is configured to receive SNMP traps from routers. The traps are not appearing in the NMS. The NMS is reachable from the routers via ping. The routers are configured with the correct community string and the NMS IP address. What is the most likely cause of the missing traps?

   • AThe NMS is not listening on the SNMP trap port (UDP 162)
   • BThe SNMP community string is incorrect on the routers
   • CThe routers are sending traps to the wrong port
   • DThe routers are not synchronized with NTP
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A network engineer is configuring NTP on a router that will act as a time source for other devices in the lab. The router has a direct connection to a GPS-based stratum 1 time source. What stratum level should this router be configured with?

   • AStratum 15
   • BStratum 2
   • CStratum 0
   • DStratum 1
   Reveal Solution Discussion Select an answer first
4. 18expert · hard

   A network administrator is designing NAT for a branch office with a single public IP. The office has 100 users who need outbound internet access, and one internal server that must be reachable from the internet on TCP port 443. The administrator wants to minimize configuration complexity while meeting both requirements. Which approach should be used?

   • AConfigure PAT for outbound traffic and static NAT for the internal server
   • BConfigure static NAT for all 100 users and the server
   • CConfigure PAT for both outbound traffic and inbound access to the server
   • DConfigure dynamic NAT with a pool of public IPs for outbound traffic and static NAT for the server
   Reveal Solution Discussion Select an answer first
5. 19expert · hard

   A network monitoring system uses SNMPv2c to poll device metrics every 5 minutes. The administrator notices that some SNMP GET requests time out during peak hours. The devices are reachable via ping. What is the most likely cause of the SNMP timeouts?

   • AThe NTP clock is not synchronized
   • BThe SNMP agent is overloaded due to excessive polling
   • CThe SNMP manager is using the wrong port
   • DThe SNMP community string is incorrect
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A network administrator wants to receive immediate notifications when a router interface goes down. The router supports SNMPv2c. Which SNMP feature should be configured on the router to send an unsolicited message to the NMS?

   • ASNMP trap
   • BSNMP set
   • CSNMP poll
   • DSNMP walk
   Reveal Solution Discussion Select an answer first