Which three attributes are carried in a source active message?（）A、NLRI informationB、IP address of originating RPC、address of multicast sourceD、all active RPs in the local domainE、group address to which the source is sending

第1题：

第2题：

The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.00.0.0.255 any What is the effect of this access list configuration？（）

• A、ermit all packets matching the first three octets of the source address to all destinations
• B、permit all packet matching the last octet of the destination address and accept all source addresses
• C、permit all packet matching the host bits in the source address to all destinations
• D、permit all packet from the third subnet of the network address to all destinations

第3题：

第4题：

What is the function of the Cisco IOS command ip nat inside source static 10.1.1.5 172.35.16.5？（）

• A、It creates a global address pool for all outside NAT transactions.
• B、It establishes a dynamic address pool for an inside static address.
• C、It creates dynamic source translations for all inside local PAT transactions.
• D、It creates a one-to-one mapping between an inside local address and an inside global address.
• E、It maps one inside source address to a range of outside global addresses.

第5题：

Which of the following descriptions about IP spoofing is correct？（）

• A、IP source address is forged
• B、IP destination address is forged
• C、IP TCP source port is forged
• D、IP TCP destination port is forged
• E、None of above

第6题：

第7题：

What is the function of the Cisco IOS command ip nat inside source static 10.1.1.5 172.35.16.5（）。

• A、It creates a global address pool for all outside NAT transactions
• B、It establishes a dynamic address pool for an inside static address
• C、It creates dynamic source translations for all inside local PAT transactions
• D、It creates a one-to-one mapping between an inside local address and an inside global address
• E、It maps one inside source address to a range of outside global addresses

第8题：

第9题：

Which three IP multicast group concepts are true?（）

• A、If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.
• B、A router does not have to be a member of a multicast group to receive multicast data.
• C、A router must be a member of a multicast group to send to the group.
• D、A router does not have to be a member of a multicast group to send to the group.
• E、If a packet is sent to a multicast group address, all members of the multicast group will rece ive it.
• F、A router must be a member of a multicast group to receive multicast data.

第10题：

Which three methods of source NAT does the Junos OS support?（） (Choose three.)

• A、interface-based source NAT
• B、source NAT with address shifting
• C、source NAT using static source pool
• D、interface-based source NAT without PAT
• E、source NAT with address shifting and PAT