更多"Host 1 sends a request for a file t"的相关试题:
[单项选择]Host 1 sends an ICMP echo request to remote sever1. Layer2 header of the frame containing the ping packet（）。
A. The IP address of sever 1.
B. The MAC address of NIC in sever 1.
C. The IP address of F0/0 interface of router R1.
D. The MAC address of the Fa0/0 interface of router R1.
E. The IP address of the s0/0/0 interface of router R2
F. The MAC address of the s0/0/0 interface of router R2
[多项选择] When an IPv6 enabled host boots, it sends a router solicitation (RS) message. An IPv6 router responds with a router advertisement (RA). Which two items are c ontained in the RA?（）
A. any route advertisements it has received
B. prefixes for the link
C. keepalive timers
D. IPv6 address for the host
E. request for the local host IP address
F. lifetime of the prefix
[单项选择]Host 1 receives a file from remote server 1. Which MAC address appears as the source address in the header of the frames received by Host 1（）。
A. The MAC address of the NIC in Host 1
B. The MAC address of the NIC in server 1
C. The MAC address of the Fa0/0 interface of router R1
D. The MAC address of the s0/0/0 interface of the router R2
[简答题] 将下列的环境变量表示的含义写出来 1.REMOTE_ADDR 2.REQUEST_METHOD 3.REMOTE_HOST
[单项选择] Host A opens a Telnet connection to Host B. Host A then opens another Telnet connection to Host B. These connections are the only communication between Host A and Host B. The security policy configuration permits both connections. How many flows exist between Host A and Host B? （）
A. 1
B. 2
C. 3
D. 4
[判断题]命令cat file1 file2 >file3把file1和file2组合成file3。
[单项选择]A host is attempting to send data to another host on a different network. What is the first action that the sending host will take?（）
A. Drop the data.
B. Send the data frames to the default gateway.
C. Create an ARP request to get a MAC address for the receiving host.
D. Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.
[多项选择]A network host is configured as follows: Host IP address: 192.168.16.183 Subnet mask: 255.255.255.224 Default gateway: 192.168.16.190 Which of the following statements describe the network to which this host is attached?（）
A. The default gateway is configured on a different subnet form this host.
B. The host is a member of the fifth usable subnet of the 192.168.16.0 network.
C. The subnetwork address for this host is 192.168.16.160/28.
D. The address of the next higher subnet is 192.168.16.192.
E. The address of the router interface that is attached to this subnetwork is 192.168.16.190.
F. There are 60 usable host addresses on this subnet.
[多项选择]Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?（）
A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.
B. Router C will use ICMP to inform Router B that Host 2 cannot be reached.
C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.
D. Router C will send a Destination Unreachable message type.
E. Router C will send a Router Selection message type.
F. Router C will send a Source Quench message type.
[单项选择]In the "host to host" layer of the DOD model, which of the following is a valid connection oriented protocol?（）
A. ARP
B. RARP
C. TCP
D. UDP
E. IP
F. ICMP
G. BootP
[多项选择]When an LNS sends a Start Control Connection Reply to a LAC，which three parameters can be conveyed？（）
A. host name
B. Tunnel ID
C. IP address
D. DHCP reply
E. L2TP version
[单项选择]A networking device that sends packets to all connections is a:（）
A. gateway.
B. hub.
C. switch.
D. router.
[单项选择]You are developing a client that sends several types of SOAP messages to a Windows Communication Foundation (WCF) service method named PostData. PostData is currently defined as follows:[OperationContract]void PostData(Order data);You need to modify PostData so that it can receive any SOAP message. Which code segment should you use？（）
A. [OperationContract(IsOneWay=true, Action="*", ReplyAction="*")] void PostData(Order data);
B. [OperationContract(IsOneWay=true, Action="*", ReplyAction = "*")] void PostData(BodyWriter data);
C. [OperationContract] void PostData(BodyWriter data);
D. [OperationContract] void PostData(Message data);
[判断题]如当前目录中没有file文件，touch file命令建立长度为0的文件file。
