3.3 IP Services 350-401 Practice Questions (Page 6)

Questions 26–30

1. 26application · medium

   A small office has a single public IP address 203.0.113.5 on its router's outside interface. There are 50 internal hosts using private IP addresses in the 192.168.1.0/24 range. The hosts need to access the internet. Which NAT configuration should be used?

   • APAT using the single public IP address
   • BStatic NAT for each internal host
   • CNAT overload with a pool of private addresses
   • DDynamic NAT with a pool of 50 public addresses
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A branch office has two routers (R1 and R2) providing default gateway redundancy for a /24 subnet. R1 is the preferred active router, but after a reload it does not regain the active role even though it has a higher priority. The network engineer wants R1 to become active again automatically after it recovers, without manual intervention. Which configuration change on R1 accomplishes this?

   • AConfigure HSRP authentication on R1.
   • BEnable HSRP preemption on R1.
   • CIncrease the HSRP hello interval on R1.
   • DSet the HSRP virtual IP address to match R1's interface IP.
   Reveal Solution Discussion Select an answer first
4. 28foundation · easy

   What is the main enhancement of IGMPv3 over IGMPv2?

   • AFaster leave latency
   • BEncryption of membership reports
   • CSupport for IPv6 multicast
   • DSupport for source-specific multicast
   Reveal Solution Discussion Select an answer first
5. 29application · medium

   A network uses VRRP for gateway redundancy. The engineer wants to ensure that the router with the highest priority is always the active virtual router, even if it was down and later recovers. What should be configured?

   • AConfigure the virtual router IP address as the primary IP address on the preferred router.
   • BSet the same priority on both routers.
   • CEnable preemption on both routers.
   • DDisable preemption on the preferred router.
   Reveal Solution Discussion Select an answer first
6. 30application · medium

   A network engineer is configuring NTP authentication on a router. The router is configured with 'ntp authenticate', 'ntp authentication-key 1 md5 secret', and 'ntp trusted-key 1'. The router is also configured with 'ntp server 192.168.1.1'. Which additional configuration is required for the router to synchronize with the NTP server?

   • AThe router must be configured with 'ntp source' to specify the source interface.
   • BThe NTP server must be configured with the same authentication key.
   • CThe router must be configured with 'ntp peer 192.168.1.1' instead of 'ntp server'.
   • DThe router must be configured with 'ntp broadcast client'.
   Reveal Solution Discussion Select an answer first