单选题BCP （Best Common Practices） 38/RFC 2827 Ingress and Egress Packet Filtering would help mitigate whatclassification of attack？（）ASniffing attackBDenial of service attackCPort Scan attackDReconnaisance attackESpoofing attack
单选题
BCP （Best Common Practices） 38/RFC 2827 Ingress and Egress Packet Filtering would help mitigate whatclassification of attack？（）
A
Sniffing attack
B
Denial of service attack
C
Port Scan attack
D
Reconnaisance attack
E
Spoofing attack
参考解析
解析：
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单选题How is an RSVP resv message sent back to the ingress router？（）A reverse path of the RROB least cost to the ingress routerC shortest path to the egress routerD reverse path of the path vector TLV
单选题When implementing best practices for IP Source Address Spoofing and Defeating Denial of Service Attacks with IP SourceAddress Spoofing， what RFC is commonly usedto protect your network？（）A RFC 1149B RFC 3704C RFC 1918D RFC 2827
单选题What is the term "ordered control" mean regarding how MPLS LSPs are established?（）Aestablish starting at the egress router going back to the ingress routerBestablish starting at the ingress router going downstream to the egress routerCestablish when a router learns of a new prefixDestablish when the path correctly matches the reverse path forwarding check
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多选题What are BCP 38 （Best Common Practices 38）/RFC 2827 Ingress Packet Filtering Principles？（）AFilter Smurf ICMP packets.BFilter as close to the core as possibleCFilter as close to the edge as possibleDFilter as precisely as possibleEFilter both source and destination where possible
单选题BCP （Best Common Practices） 38/RFC 2827 Ingress and Egress Packet Filtering would help mitigate whatclassification of attack？（）ASniffing attackBDenial of service attackCPort Scan attackDReconnaisance attackESpoofing attack