In a lab, R1 connects to R2, which connects to R3. R1 and R2 each have several working interfaces, all assigned addresses in class A network 10.0.0.0. Router R3 has some working interfaces in class A net work 10.0.0.0, and others in class B network 172.16.0.0. The engineer experiments with the auto -summary command on R2 and R3, enabling and disabling the command in various combinations.
Which of the following combinations will result in R1 seeing a rout e for 172.16.0.0/16, instead of the individual subnets of class B network 172.16.0.0?（）

R1 has 5 working interfaces, with EIGRP neighbors existing off each interface. R1 has routes for subnets 10.1.1.0/24, 10.1.2.0/24, and 10.1.3.0/24, with EIGRP integer metrics of roughly 1 million, 2 million, a nd 3 million, respectively. An engineer then adds the ip summary - address eigrp 1 10.1.0.0 255.255.0.0 command to interface Fa0/0.
Which of the following is true?（）

An engineer has typed four different single - line prefix lists in a word processor. The four answers show the four different single -lin e prefix lists. The engineer then does a copy/paste of the configuration into a router.
Which of the lists could match a subnet whose prefix length is 27?（）

R1 has correctly configured EIGRP to filter routes using a route map named question. The configuration that follows shows the entire route map and related configuration. Which of the following is true regarding the filtering action on prefix 10.10.10.0/24 in this case?（）
route - map question deny 10
match ip address 1
route - map question permit 20
match ip address prefix- list fred
!
access - list 1 deny 10.10.10.0 0.0.0.255
ip prefix - list fred permit 10.10.10.0/23 le 25

The command output that follows was gathered from router R1. If correctly referenced by an EIGRP distribution list that filters outbound Updates, which of the following statements is true about the filtering of various prefixes by this Prefix list?（）
R1#sh ip prefix - list
ip prefix - list question: 4 entries
seq 5 deny 10.1.2.0/24 ge 25 le 27
seq 15 deny 10.2.0.0/16 ge 30 le 30
se q 20 permit 0.0.0.0/0

Router R1 has been configured for EIGRP. The configuratio n also includes an ACL with one line -access - list 1 permit 10.100.32.0 0.0.15.255 - and the EIGRP configuration includes the distribute -list 1 in command.
Which of the following routes could not be displayed in the output of the show ip eigrp topology comm and as a result?（）

Router R1 lists 4 routes for subnet 10.1.1.0/24 in the output of the show ip eigrp topology all - links command. The variance 200 command is configured, but no other related commands are configured. Which of the following rules are true regarding R1's decision of what r outes to add to the IP routing table?
Note that RD refers to reported distance and FD to feasible distanc E.（）

A network design shows that R1 has four different possible paths from itself to the Data Center subnets.
Which one of the following commands is most likely to show you all the possible next - hop IP addresses for these four possible routes?（）

A company has a Frame Relay WAN with one central - site router and 100 branch office routers. A partial mesh of PVCs exists: one PVC between the central site and each of the 100 branch routers.
Which of the following could be true about the number of EIGRP neighbor ships?（）