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質問 1：
An analyzer indicates that packets cannot be delivered because the 'Don't Fragment" bit was set on packets. Which protocol might cause such a fragmentation fault?
A. UDP
B. IP
C. ICMP
D. TCP
E. ARP
正解：B
質問 2：
You are assigned the task of configuring subnetworks for your company's class C IP network address. You have the following current and future requirements:
Current requirement 1: Allow support for 5 subnetworks.
Current requirement 2: Allow support for 20 hosts per subnetwork.
Future requirement 1: Allow growth to 10 subnetworks.
Future requirement 2: Allow growth to 30 hosts per subnetwork.
If you configure a subnet mask of 255.255.255.224, which requirement or requirements are met?
A. Current requirement 1 and future requirement 1 only
B. Current requirements 1 and 2 and future requirement 1
C. Current requirements 1 and 2 only
D. Only current requirement 1
E. Only current requirement 2
F. Current requirements 1 and 2 and future requirement 2
G. All requirements
正解：F
質問 3：
A client appears to be unable to establish an HTTP session with a local web server. The client can ping and FTP to the server successfully and appears to be able to connect to other web servers on the network. Which protocol is most likely the cause of this error?
A. IP
B. TCP
C. ARP
D. HTTP
正解：D
質問 4：
Which phrase describes a TCP/IP port?
A. Used to distinguish data intended for a particular service
B. Used to route data to a particular IP address
C. Allows copies of a packet to be sent to multiple destinations
D. Provides a message format that allows two machines to communicate
正解：A
質問 5：
CORRECT TEXT
Which protocol provides hypermedia access to resources? (Enter the abbreviation only.)
正解：
HTTP
質問 6：
Which are ICMP message types? (Choose 4.)
A. Checksum
B. Echo Request and Reply
C. Datagram Express
D. Source Quench
E. Destination Unreachable
F. Time Exceeded for a Datagram
G. Destination Address Request and Reply
正解：B,D,E,F
質問 7：
What type of problem might occur on a network that uses DHCP addressing for a web server that is listed in a DNS server host file?
A. Clients may receive ICMP destination unreachable replies when they contact the DNS server.
B. DNS host file entries may conflict with DHCP-assigned addresses.
C. DNS lookups may return 'no name' replies to DNS queries.
D. Clients cannot reach the DHCP server when the bootup.
正解：B
質問 8：
What is the purpose of the IGMP protocol?
A. To multiplex signals on a transmission channel
B. To transfer electronic mail messages between hosts
C. To communicate multicast group membership information with local routers
D. To monitor hosts that belong to a network broadcast group
E. To specify how mail systems in a network group interact and exchange messages
F. To send datagram problems back to the host that sent the datagram
正解：C
質問 9：
Which type of firewall uses two screening routers and a bastion host on its own subnetwork?
A. Bastion hosts
B. Screened subnets
C. Screened hosts
D. Screening routers
E. Tri-Homed hosts
F. Dual-homed hosts
正解：B
An analyzer indicates that packets cannot be delivered because the 'Don't Fragment" bit was set on packets. Which protocol might cause such a fragmentation fault?
A. UDP
B. IP
C. ICMP
D. TCP
E. ARP
正解：B
質問 2：
You are assigned the task of configuring subnetworks for your company's class C IP network address. You have the following current and future requirements:
Current requirement 1: Allow support for 5 subnetworks.
Current requirement 2: Allow support for 20 hosts per subnetwork.
Future requirement 1: Allow growth to 10 subnetworks.
Future requirement 2: Allow growth to 30 hosts per subnetwork.
If you configure a subnet mask of 255.255.255.224, which requirement or requirements are met?
A. Current requirement 1 and future requirement 1 only
B. Current requirements 1 and 2 and future requirement 1
C. Current requirements 1 and 2 only
D. Only current requirement 1
E. Only current requirement 2
F. Current requirements 1 and 2 and future requirement 2
G. All requirements
正解：F
質問 3：
A client appears to be unable to establish an HTTP session with a local web server. The client can ping and FTP to the server successfully and appears to be able to connect to other web servers on the network. Which protocol is most likely the cause of this error?
A. IP
B. TCP
C. ARP
D. HTTP
正解：D
質問 4：
Which phrase describes a TCP/IP port?
A. Used to distinguish data intended for a particular service
B. Used to route data to a particular IP address
C. Allows copies of a packet to be sent to multiple destinations
D. Provides a message format that allows two machines to communicate
正解：A
質問 5：
CORRECT TEXT
Which protocol provides hypermedia access to resources? (Enter the abbreviation only.)
正解：
HTTP
質問 6：
Which are ICMP message types? (Choose 4.)
A. Checksum
B. Echo Request and Reply
C. Datagram Express
D. Source Quench
E. Destination Unreachable
F. Time Exceeded for a Datagram
G. Destination Address Request and Reply
正解：B,D,E,F
質問 7：
What type of problem might occur on a network that uses DHCP addressing for a web server that is listed in a DNS server host file?
A. Clients may receive ICMP destination unreachable replies when they contact the DNS server.
B. DNS host file entries may conflict with DHCP-assigned addresses.
C. DNS lookups may return 'no name' replies to DNS queries.
D. Clients cannot reach the DHCP server when the bootup.
正解：B
質問 8：
What is the purpose of the IGMP protocol?
A. To multiplex signals on a transmission channel
B. To transfer electronic mail messages between hosts
C. To communicate multicast group membership information with local routers
D. To monitor hosts that belong to a network broadcast group
E. To specify how mail systems in a network group interact and exchange messages
F. To send datagram problems back to the host that sent the datagram
正解：C
質問 9：
Which type of firewall uses two screening routers and a bastion host on its own subnetwork?
A. Bastion hosts
B. Screened subnets
C. Screened hosts
D. Screening routers
E. Tri-Homed hosts
F. Dual-homed hosts
正解：B
森ひ** -
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