Sample Questions:
Q) Automatic 6-to-4 tunnels exist between dual-stack routers (A, B, and C). One router has the IPv6 address, 2002:D030:6BC0:173C::26:37D0/48 Which of the following addresses is the IPv4 address of the router with the IPv6 address 2002:D030:6BC0:173C::26:37D0/48?
A. 10.176.15.131
B. 10.200.80.67
C. 208.48.107.192
D. 208.138.16.110
Q) An automatic IPv4-compatible IPv6 tunnel exists between two IPv6 networks. The two IPv6 networks belong to different BGP autonomous systems (AS). The tunnel source has the IPv4 address 172.168.111.65/24 and the tunnel destination has the IPv4 address 172.168.222.80/24. Which of the following statements is TRUE about the tunnel source and tunnel destination IPv6 addresses? (Choose two.)
A. the IPv6 address of the tunnel source is :: 172.168.111.65
B. the IPv6 address of the tunnel source is ::172.168.111.65
C. the IPv6 address of the tunnel destination is:: 172.168.222.80
D. the IPv6 address of the tunnel destination is ::172.168.222.80
Q) Which of the following statements are TRUE about manually configured IPV4-to-IP6 tunnels and GRE tunnels? (Choose two.)
A. Manually configured tunnels use the tunnel mode ipv6ip command, while GRE tunnels use the tunnel mode gre ip command.
B. Manually configured tunnels support IPv6 IGPs, while GRE tunnels do not.
C. Manually configured tunnels block IPv6 multicasts, while GRE forwards them.
D. Manually configured tunnels do not support multiple passenger protocols, while GRE tunnels support them.
Q) Which of the following IPv6/IPv4 interoperability techniques routes both IP versions simultaneously?
A. NAT-PT
B. Dual stack
C. 6to4 tunnels
D. Teredo
Q) Which of the following statements represent characteristics of an automatic 6to4 tunnel through an IPv4 network? (Choose all that apply.)
A. There is a NAT-PT router on either end of the tunnel.
B. There is a dual stack router on either end of the tunnel.
C. Each 6to4 site will have a /48 prefix.
D. Each 6to4 site will have a /16 prefix.
E. The IPv4 addresses of the edge routers are part of the site prefix.
F. The IPv6 addresses of the sending and receiving IPv6 hosts are part of the site prefix.
Q) You have been alerted that TCP traffic leaving an interface has been reduced to near zero, while UDP traffic is steadily increasing at the same time. What is this behavior called and what causes it?
A. jitter, caused by lack of QoS
B. latency, caused by the MTU
C. starvation, caused improper configuration of QoS queues
D. windowing, caused by network congestion
