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：

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2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3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4题：

Which statement describes the behavior of source NAT with address shifting？（）

• A、Source NAT with address shifting translates both the source IP address and the source port of a packet.
• B、Source NAT with address shifting defines a one-to-one mapping from an original source IP address to a translated source IP address.
• C、Source NAT with address shifting can translate multiple source IP addresses to the same translated IP address.
• D、Source NAT with address shifting allows inbound connections to be initiated to the static source pool IP addresses.

第5题：

Which statement about multicast VPN is true？（）

• A、The MDT group address should be the same for both address families in the same VRF
• B、The MDT group address should be the same for both address families in the different VRFs
• C、Configuration of the MDT source on a pre-VRF basis is supported only on IPv6
• D、The MDT group address should be different for both address families in the same VRF

第6题：

What is the effect of the following access list condition access-list 101 permit ip 10.25.30.0 0.0.0.255 any（）。

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

第7题：

Which configuration command controls the source IP address for packets sent to a RADIUS server？（）

• A、radius override nas-ip-addr
• B、radius source-ip-address 10.13.7.55
• C、radius update-source-address 10.13.7.11
• D、radius authentication server 10.13.7.55

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第13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14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15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

第16题：

Which three methods of source NAT does JUNOS Software support？（）

• 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

第17题：

Which three IP multicast group concepts are true？ （Choose three.） （）

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

第18题：

Which of one the following fields is contained within an IEEE Ethernet frame header?（）

• A、source and destination MAC address
• B、source MAC address and destination network address only
• C、source and destination network address only
• D、source network address and destination MAC address
• E、source and destination MAC address and source and destination network address

第19题：

Which two statements are true about the primary address on an interface? （）

• A、It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface
• B、You use the primary address when you have multiple IP addresses belonging to the same subnet on the same inteface
• C、It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface
• D、By default, the primary address on an interface is selected as the nmerically highest local address configured on the interface

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