Which three of the following protocols will be forwarded to a host specified by the ip helper - address interface configuration command if the configuration has not been modified by the ip forward - protocol udp global con figuration command?（）

单项选择题Refer to the exhibit. Routers R1 and R2 have established a neighbor relationship and are exchanging routing information. The network design requires that R1 r eceive routing updates from R2, but not advertise any routes to R2. Which configuration command sequence will successfully accomplish this task? （）

A. R1(config)# router eigrp 1   R1(config - router)# passive - interface serial 0
B. R1(config)# access - list 2 0 deny any   R1(config)# router eigrp 1   R1(config - router)# distribute - list 20 out serial 0
C. R2(config)# access - list 20 permit any   R2(config)# router eigrp 1   R2(config - router)# distribute - list 20 in serial 0
D. R1(config)# access - list 20 permit any   R 1(config)# router eigrp 1   R1(config - router)# distribute - list 20 in serial 0
E. R2(config)# access - list 20 deny any   R2(config)# router eigrp 1   R2(config - router)# distribute - list 20 out serial 0
F. R2(config)# router eigrp 1   R2(config - router)# passive - interface serial 0

多项选择题When policy - based routing (PBR) is being configured, which three criteria can the set command specify?（）

A. all interfaces in the path toward the destination
B. all networks in the path toward the destination
C. adjacent next hop router in the path toward the destination
D. all routers in the path toward the destination
E. all interfaces through which the packets can be routed
F. type of service and precedence in the IP packets

单项选择题Refer to the exhibit. The routing protocols EIGRP and OSPF have been configured as indicated in the exhibit. Given the partial configuration of router R2, which network will be present in th e routing table of R4?（）

A. Network B
B. Network A and Network B
C. Network A
D. neither Network A nor Network B

多项选择题Which two provide intra -area routing services?（）

A. L1  ES
B. L2 IS
C. L2 ES
D. L1 IS
E. L1/L2 IS

多项选择题Which three statements are correct about the differences in IS - IS and OSPF?（）

A. IS - IS is more CPU - intensive than is OSPF
B. For greater fine tuning there are more IS - IS timers
C. IS - IS LSP con tains TLV fields and OSPF LSU contains the LSAs
D. New additions to the protocol are easily implemented in OSPF but not with IS - IS
E. OSPF has more area types than does IS - IS