A. TRACERT
B. ROUTE
C. NBTSTAT
D. IPCONFIG
The TRACERT utility is Microsoft's own, used to trace a packet from its source ( your computer ) to a destination host ( a remote computer ).
Question 2. If you wanted to display all entries in the ARP cache, which of the following utilities would you use?
A . ARP - G
B. ARP - E
C. ARP - D
D. ARP - S
To display all entries in the ARP ( Address Resolution Protocol ) cache, you would use the ARP utility with the -G or - A switch. They are the same thing. To get the answer type "arp /?" at the command prompt.
ARP ( Address Resolution Protocol ) is used to obtain hardware ( MAC = Media Access Control ) addresses for communications with a destination host.
Question 3. You notice that the subnet mask is 0.0.0.0 on your Windows NT computer while using the IPCONFIG utility at the command prompt to check for IP address configuration. What does it mean when the IPCONFIG utility displays a subnet mask of 0.0.0.0?
A. The default gateway on your computer does not match the default gateway of the network.
B. Your computer has the same subnet mask as another computer on the network.
C. Your computer does not have the correct IP address class specified for it.
D. Your computer has the same IP address as another computer on the network.
The most likely cause in this scenario is that your computer has the same IP address as another computer in the network. When this happens, running IPCONFIG will yield an IP address of 0.0.0.0.
Question 4. If you want to copy files from one Windows NT computer to another, what TCP / IP utility would you use?
A . RCP
B. REXEC
C. TELNET
D. TRACERT
The RCP ( Remote Copy ) is Microsoft's own TCP / IP utility. It is used to copy files from a source Windows NT computer to a destination ( remote ) Windows NT computer, or vice-versa. Type "rcp /?" at the command prompt to get the command's full syntax.
Question 5. Use the following diagram to answer this question :
You are working on your Windows NT workstation, SMALLNT, and you would like to communicate with another Windows NT computer, BIGNT. If both computers are on the same local subnet , where does SMALLNT look for the hardware address of the destination host? ( BIGNT in this case )
A. In its own ARP cache.
B. In the ARP cache of the destination host, BIGNT in this case.
C. If there is a DHCP server present , then in the ARP cache of the DHCP server.
D. In the LMHOSTS or HOSTS file of the source computer.
The ARP protocol ( and NOT the ARP command ) is used to map IP addresses to hardware addresses ( MAC addresses ). Anytime you communicate with a destination host that is on the same subnet ( locally ), then the hardware address of the destination host is obtained from the source host's LOCAL ARP cache. In this scenario, BIGNT's hardware address is obtained from SMALLNT's own ARP cache since both computers are on the same network.
Question 6. You have a print device connected to a server running the LPD service. From your Windows NT computer, you would like to obtain the status of the print device. What utility would you use to achieve the task?
A. LPD
B. NET USE
C. LPQ
D. GETDAEMON
The LPD ( Line Printer Daemon ) is a TCP / IP printing service. A print server that has a TCP / IP print device connected to it must have the LPD service installed on it. However, to obtain the status of a TCP / IP print device ( or print queue as it is often called in the TCP / IP circle ), you would use the LPQ command.
Type "lpq /?" at the command prompt to get the proper syntax. Pay close attention to the "-S" and "-P" switches. For the "-S" switch, you can specify the NAME or IP address of the print server running the LPD service.
Question : Under Windows NT Server 4.0, how do you install the LPD service?
Answer : Under Windows NT, the LPD service is known as "Microsoft TCP / IP Printing" ===> right-click Network Neighborhood | Properties | Services tab | Add... | "Microsoft TCP / IP Printing" service.
Question 7. Let's say that you want to run a process on a remote host that is using the REXEC service, what Microsoft TCP / IP utility would you use?
A. RCP
B. REXEC
C. TELNET
D. FTP
The REXEC ( Remote Execute ) command is Microsoft's home-grown utility used to run processes on a remote computer that is also running the REXEC service. Type "rexec /?" at the command prompt to get the full syntax.
Question 8. If you want to retrieve system information from a remote host running the Finger service, what TCP / IP utility would you use?
A. REXEC
B. PING
C. RCP
D. FINGER
The FINGER utility is used to obtain system information from a remote host that is using the Finger service. To get the proper syntax, type "finger" at the command prompt.
Question 9. Let's say that you want a DHCP client to give up its lease with a DHCP server, what command would you use to accomplish the task?
A. ipconfig / endlease
B. ipconfig / release
C. route / release
D. route / endlease
The IPCONFIG / RELEASE command is used to send a DHCPRELEASE message from a DHCP client to a DHCP server. The DHCPRELEASE message specifies that a client wishes to give up its current lease with the DHCP server. Type, "ipconfig /?" at the command prompt to display all the switches of the utility.
Question 10. You would like to see a list of NetBIOS computer names that have been resolved into IP addresses on your Windows NT computer. Which of the following utilities would you use?
A. ARP
B. NetBIOS
C. NETSTAT
D. NBTSTAT
You can use the "nbtstat" utitliy to view all NetBIOS computer names that have been resolved into IP addresses. To see the NetBIOS local name table of your workstation, use "nbtstat -n."
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UCHAR Netbios(
PNCB pncb // 指向|络控制块的指针
);
q回?
<1>作ؓ同步h,q回值就是NCB的返回代?同时q个q回代码也包含在NCB的ncb_retcode成员?
<2>作ؓ异步h有下面几U情?
1.如果异步命o在netbios()q回q回他的调用者之前已l完?情况?lt;1>
2.?.相反,q回值就?
<3>如果pncb指针无效q回值是NRC_BADNCB
<4>如果ncb_length成员的g正确或者是ncb_buffer区域被写保护q回gؓNRC_BUFLEN
下面讲讲NCB控制块的l构:
typedef struct _NCB {
UCHAR ncb_command;
UCHAR ncb_retcode;
UCHAR ncb_lsn;
UCHAR ncb_num;
PUCHAR ncb_buffer;
WORD ncb_length;
UCHAR ncb_callname[NCBNAMSZ];
UCHAR ncb_name[NCBNAMSZ];
UCHAR ncb_rto;
UCHAR ncb_sto;
void (*ncb_post) (struct _NCB *);
UCHAR ncb_lana_num;
UCHAR ncb_cmd_cplt;
UCHAR ncb_reserve[10];
HANDLE ncb_event;
} NCB;
3 ncb_command:指定一个命令码和一个该NCB是同步还是异步处理的标志,如果ASYNCH帔R通过"|"q? 符与命令码l合的话,那么q个NCB块将会异步执行?
.NCBACTION:用于 Win NT非标准的Netbios 3.0的标准命?
.NCBADDGRNAME:d一个组名字到本地名字表,q个名称不能被网l上的其他进E作Z个唯一? 名字来用但是他可以被其他进E作为组名字来添?
.NCBADDNAME:d一个唯一名字到本地名字表,TDI驱动E序保证q个名字在网l中的唯一?
.NCBASTAT:q回一个本地或者远E适配器的状?当用这个命令的时?ncb_buffer 成员指向一个ADAPTER_STATUSl构后面紧跟着一个NAME_BUFFERl构数组
.NCBCALL:用另外一个名字开启一个会?
.NCBCANCEL:l止前一个未执行完的命o
.NCBCHAINSEND:发送两份数据缓冲到指定的会话伙?
.NCBCHAINSENDNA:发送两份数据缓冲到指定的会话伙?但不{待Ҏ应答q卌?
.NCBDELNAME:从本地名字表中删除一个名?
.NCBDGRECV:接收来自宁一个名字的数据?
.NCBDGRECVBC:接收来自宁一个名字的以广播方式发送的数据?
.NCBDGSEND:发送一个数据包C个指定的名字(q程)
.NCBDGSENDBC:发送一个数据包到局域网中的每一C?
.NCBENUM:用于WinNT,非标准的Netbios3.0的命?
.NCBFINDNAME:定位一个名字在|络中的位置,此时ncb_buffer指向FIND_NAME_HEADERl构,同时后面紧跟着一个或者多个FIND_NAME_BUFFERl构
.NCBHANGUP:关闭一个指定的会话
.NCBLISTEN:允许一个会话以另外一个名字打开(本地或者远E的会话都可?
.NCBRECV:从一个指定的会话伙伴接收数据
.NCBRECVANY:从Q何一个其他的以一个指定的名字通信的会话接收数?
.NCBRESET:复位一个网l适配?在他接收M命o(与ncb_lana_num成员有相同的数字)之前必须q行复位操作????
.NCBSEND:发送数据到指定的会话伙?
.NECBSENDNA:发送数据到指定的会话伙伴后不等待应{立卌?
.NCBSSTAT:q回某个会话的状?指定q个命o以后ncb_buffer成员指向一个SESSION_HEADER l构,后面紧接着一个或多个SESSION_BUFFER l构
.NCBUNLINK:断开一个适配器的q接,该命令的讄是处于兼Ҏ的考虑,在Win32中不支持该命?/p>
]]>