If you want to set the frame relay LMI type to ANSI, you should ______.

• A.Use the command fr lmi class ansi in interface mode
• B.Use the command fr lmi type ansi in interface mode
• C.Use the command fr lmi class ansi in system mode
• D.Use the command fr lmi type ansi in system mode

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The following description of the star network topology is correct ______. (Multiple choice)

• A.Star topology is easy to maintain
• B.In the star topology, the failure of one line does not affect the computer communication under other lines
• C.The star topology has high robustness, and there is no single point of failure. Central node failure
• D.Since the star topology network shares the bus bandwidth, when the network load is too heavy, it will cause performance degradation

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The correct statement about the IP address below is ______. (Multiple choice)

• A.Class D IP addresses are usually used as multicast addresses.
• B.Address translation (NAT) technology is usually used to solve the conversion of class A addresses to class C addresses.
• C.IP address consists of two parts: network number and host number.
• D.The network number of the Class A IP address has 8 digits, and the actual variable number is 7 digits.

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To set a subnet mask so that 192.168.0.94 and 192.168.0.116 are not in the same network segment, the subnet mask used may be ______. (Multiple choice)

• A.255.255.255.224
• B.255.255.255.192
• C.255.255.255.240
• D.255.255.255.248

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A network connection is like:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
The two MSR routers MSR1 and MSR2 are interconnected back-to-back through their S1/0 interfaces, and their GigabitEthernet0/0 interfaces are respectively connected to the client hosts HostA and HostB. HostA can communicate with HostB in the current network by configuring the IP address and routing.
The following configuration has been added to MSR-2:
firewall enable
acl number 3000
rule 0 deny tcp destination-port eq telnet
interface Serial1/0
link-protocol ppp
ip address 1.1.1.2 255.255.255.252
firewall packet-filter 3000 inbound
firewall packet-filter 3000 outbound
interface GigabitEthernet0/0
ip address 10.1.1.1 255.255.255.0
So which of the following statements are correct? (multiple choice)

• A.The firewall packet-filter 3000 outbound configured later will replace the firewall packet-filter 3000 inbound command
• B.Telnet to MSR-1 on HostB successfully
• C.The last configured firewall packet-filter 3000 outbound will not replace the firewall packet-filter 3000 inbound command
• D.Can't successfully Telnet to MSR-1 on HostB

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