单选题What protocol specified by RFC 1256 will allow an enabled IP host a new router when a router  becomes unavailable？ （）AIRDPBSNMPCHSRPDVRRP

第1题：

What protocol specified by RFC 1256 will allow an enabled IP host a new router when a router  becomes unavailable？ （）

• A、 IRDP
• B、 SNMP
• C、 HSRP
• D、 VRRP

第2题：

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?（）

• A、BOOTP
• B、TFTP
• C、ARP
• D、DNS
• E、proxy - ARP
• F、FTP

第3题：

What can be specified in IP VACLs?（）

• A、Protocol and IP source only
• B、IP Source, IP Destination and ports
• C、IP Source Only
• D、IP Destination Only

第4题：

Which statement about the ip classless router command is true?（）

• A、The ip classless command is enabled by default in recent versions of IOS.
• B、The ip classless command should only be enabled when static routing is being used instead of a routing protocol.
• C、The ip classless command should be enabled by the network administrator whenever RIPv1 or IGRP is being used.
• D、The ip classless command should be enabled by the network administrator whenever OSPF, RIPv2, or EIGRP is being used.

第5题：

What are the steps for configuring stateful NBAR for dynamic protocols？ （）

• A、use the command ip nbar protocol-discovery to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface
• B、use the command match protocol rtp to allow identification of real-time audio and video traffic. Use the command ip nbar port-map to extend the NBAR functionality for well-known protocols to new port numbers
• C、use the command match protocol to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface
• D、configure a traffic class. Configure a traffic policy. Attach the traffic policy to an interface. 
• E、configure video streaming. Configure audio streaming. Attach the codec to an interface

第6题：

Internet Protocol version 6 （IPv6） is the next-generation Internet Layer protocol for packet-switched internetworks and the Internet. IPv6 router solicitation is（）

• A、A request made by a node for the IP address of the local router
• B、A request made by a node to join a specified multicast group
• C、A request made by a node for a DHCP provided IP address
• D、A request made by a node for the IP address of the DHCP server

第7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 1149
• B、 RFC 3704
• C、 RFC 1918
• D、 RFC 2827

第8题：

You are a technician at TestKing. Your newly appointed TestKing trainee wants to know what the CDP is.What would your reply be?（）

• A、It is globally enabled by default on Cisco routers.
• B、It is globally enabled by default on all routers.
• C、It is a proprietary protocol.
• D、It is a non-proprietary protocol.
• E、It can be used to gather hardware and protocol information about neighbor devices.

第9题：

You want to implement router redundancy in the Company network using the best method  available.  Which protocol specified by RFC 2281 provides network redundancy for IP networks，  ensuring that user traffic immediately and transparently recovers from first-hop failures in network  edge devices or access circuits？（）

• A、 ICMP
• B、 IRDP
• C、 HSRP
• D、 STP
• E、 None of the other alternatives apply

第10题：

Two BGP peers connected through a routed firewall are unable to establish a peering relationship. What could be the most likely cause？ （）

• A、 BGP peers must be Layer 2-adjacent
• B、 EBGP multihop is not configured
• C、 The firewall is not configured to allow IP protocol 89
• D、 The firewall is not configured to allow UDP 179.