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单选题Which of the following is TRUE about the ping  -f command?（）AIt is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line. BIt is useful for flooding from slow character based termi

题目
单选题
Which of the following is TRUE about the ping  -f command?（）
A

 It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line. 

B

 It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent in fast mode. 

C

 It is useful for flooding from slow character based terminals since it only displays a dot .       for each packet sent and a backspace on returned in fast mode. 

D

 The command can only be run by root.

相似考题

1.Regarding the extended ping command; which of the statements below are true?(Select all valid answer choices)A．The extended ping command is supported from user EXEC mode.B．The extended ping command is available from privileged EXEC mode.C．With the extended ping command you can specify the TCP and UDP port to be pinged.D．With the extended ping command you can specify the timeout value.E．With the extended ping command you can specify the datagram size.

2.Which of the following answers can be verified as true based on the following command output from Router R1?（）R1show ip ospf virtual - linksVirtual Link OSPF_VL0 to router 4.4.4.4 is upRun as demand circuitDoNotAge LSA alloweD.Transit area 1, via interface FastEthernet0/1, Cost of using 3A. R1 is configured with an area 0 virtual - link 4.4.4.4 cost 3 command.B. The ping 4.4.4.4 command on R1 must currently be successful.C. R1‘s Fa0/0 OSPF cost is 3.D. 4.4.4.4 is known to R1 based on a Type 1 LSA in area 1.

3.Which of the following commands would result in the following output： M.M.M（）。A、Ping 10.1.1.1 Data Pattern MB、Ping 10.1.1.1 timeout 0C、Ping 10.1.1.1 size 1500 df-bitD、Ping 10.1.1.1 source loopback 0E、Ping 10.1.1.1 size 1500F、Ping 10.1.1.1 size 1500 Strict

4.If you want to test if fragmentation is causing problems on the network, which two ping command options are useful?()A. ttlB. sizeC. rapidD. do-not-fragment

更多“单选题Which of the following is TRUE about the ping  -f command?（）A  It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line. B  It is useful for flooding from slow character based t”相关问题

  • 第1题：

    A technician is attempting to use a command line prompt to continuously ping a remote server to check availability and reliability of the connection. Which of the following provides the ping command needed to continuously ping the system?（）

    • A、ping -a
    • B、ping -f
    • C、ping -r
    • D、ping -t

    正确答案:D

  • 第2题：

    Which of the following is TRUE about the ping  -f command?（）

    • A、 It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the "f" in the command line. 
    • B、 It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent in fast mode. 
    • C、 It is useful for flooding from slow character based terminals since it only displays a dot "."       for each packet sent and a backspace on returned in fast mode. 
    • D、 The command can only be run by root.

    正确答案:D

  • 第3题：

    An administrator is testing setting the IP address on a Linux server from command line. Which of the following commands is used to set the default gateway for the server？（）

    • A、route
    • B、traceroute
    • C、ipconfig
    • D、nmap

    正确答案:A

  • 第4题：

    Which of the following commands should be used to identify packet sequence problems？（）

    • A、 ping and arp
    • B、 lsattr and ifconfig
    • C、 netstat and iostat
    • D、 iptrace and tcpdump

    正确答案:D

  • 第5题：

    If you want to test if fragmentation is causing problems on the network, which two ping command options are useful?（）

    • A、ttl
    • B、size
    • C、rapid
    • D、do-not-fragment

    正确答案:B,D

  • 第6题：

    Examine the following command used to perform incremental level 0 backup：   RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE；   To enable the block change tracking， after the incremental level 0 backup you issued the following command：   SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ’/mydir/ rman_change_track.f’；To perform incremental level 1 cumulative backup， you issued the following command：   RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE；   Which two statements are true in the above situation？（）

    • A、 The block change tracking data will be used only from the next incremental 0 backup.
    • B、 The incremental backup will use change tracking data for accomplishing the backup.
    • C、 The incremental backup will not use change tracking data for accomplishing the backup.
    • D、 The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.

    正确答案:A,C

  • 第7题：

    多选题
    Examine the following command used to perform incremental level 0 backup: RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable the block change tracking, after the incremental level 0 backup you issued the following command: SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE '/mydir/ rman_change_track.f'; To perform incremental level 1 cumulative backup, you issued the following command: RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which two statements are true in the above situation?（）
    A

    The block change tracking data will be used only from the next incremental 0 backup.

    B

    The incremental backup will use change tracking data for accomplishing the backup.

    C

    The incremental backup will not use change tracking data for accomplishing the backup.

    D

    The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.


    正确答案： D,C
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following commands is most useful in initially collecting data to determine a network performance problem？（）
    A

     ping

    B

     trace

    C

     ifconfig

    D

     lsattr


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the following commands should be used to identify packet sequence problems？（）
    A

     ping and arp

    B

     lsattr and ifconfig

    C

     netstat and iostat

    D

     iptrace and tcpdump


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following answers can be verified as true based on the following command output from Router R1?（） R1#show ip ospf virtual - links Virtual Link OSPF_VL0 to router 4.4.4.4 is up Run as demand circuit DoNotAge LSA alloweD. Transit area 1, via interface FastEthernet0/1, Cost of using 3
    A

    R1 is configured with  an area 0 virtual - link 4.4.4.4 cost 3 command.

    B

    The ping 4.4.4.4 command on R1 must currently be successful.

    C

    R1's Fa0/0 OSPF cost is 3.

    D

    4.4.4.4 is known to R1 based on a Type 1 LSA in area 1.


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Which of the following options indicates why it is important to talk to the user and ask appropriate questions about a software problem? （）
    A

    Software problems don't generate errors. 

    B

    The user is more knowledgeable about software. 

    C

    The system logs will provide useful information alone. 

    D

    Key information pertaining to the software may be uncovered.


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    A technician is attempting to use a command line prompt to continuously ping a remote server to check availability and reliability of the connection. Which of the following provides the ping command needed to continuously ping the system?（）
    A

    ping -a

    B

    ping -f

    C

    ping -r

    D

    ping -t


    正确答案： D
    解析： 暂无解析

  • 第13题：

    A system administrator is trying to troubleshoot company wide email problems that may be related to DNS.  Which of the following network tools would be MOST useful to determine if it is a DNS issue？（）

    • A、netstat
    • B、tracert
    • C、nslookup
    • D、ping

    正确答案:C

  • 第14题：

    Which of the following best describes the following command： ip flow-export destination192.168.1.50 1500？（）

    • A、it is not a valid NetFlow command
    • B、it is an SNMP command that exports 1500-byte packets to IP address 192.168.1.50
    • C、it is a NetFlov/ command that v/ill export 1500-byte packets to IP address 192.168.1.50
    • D、it is a NetFlov/ command that allows IP address 192.168.1.50 to send traffic to port 1500
    • E、It is a NetFlov/ command that v/ill specify that the NetFlov/ collector’s IP address is192.168.1.50 over UDP port 1500
    • F、It is an SNMP command that exports flows to destination address 1Q2.168.1.50 for packets upto an MTU of 1500

    正确答案:E

  • 第15题：

    Which of the following commands is most useful in initially collecting data to determine a network performance problem？（）

    • A、 ping
    • B、 trace
    • C、 ifconfig
    • D、 lsattr

    正确答案:A

  • 第16题：

    Which of the following options indicates why it is important to talk to the user and ask appropriate questions about a software problem? （）

    • A、Software problems don't generate errors. 
    • B、The user is more knowledgeable about software. 
    • C、The system logs will provide useful information alone. 
    • D、Key information pertaining to the software may be uncovered.

    正确答案:D

  • 第17题：

    Which of the following options is true about shutting down an Automatic Storage Management （ASM） instance？（）  

    • A、 If the SHUTDOWN IMMEDIATE command is issued to the ASM instance， the ASM instance immediately shuts down.
    • B、 If the SHUTDOWN ABORT command is issued to the ASM instance， the ASM instance will shut down all the database instances and then shut down immediately.
    • C、 If the SHUTDOWN NORMAL command is issued to the ASM instance， before shutting down， the ASM instance waits for the dependent database instances to shut down.
    • D、 If the SHUTDOWN TRANSACTIONAL command is issued to the ASM instance， the ASM instance passes the same SHUTDOWN command to the dependent database instances， but does not wait for any active transactions to complete before it shuts down.

    正确答案:C

  • 第18题：

    单选题
    A system administrator ran the iostat command because of system performance problems. The following iostat output is provided： Based on the output， which of the following is insufficient？（）
    A

    CPU

    B

    Memory

    C

    Paging space

    D

    Disk capacityX


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the following options is true about shutting down an Automatic Storage Management （ASM） instance？（）
    A

     If the SHUTDOWN IMMEDIATE command is issued to the ASM instance， the ASM instance immediately shuts down.

    B

     If the SHUTDOWN ABORT command is issued to the ASM instance， the ASM instance will shut down all the database instances and then shut down immediately.

    C

     If the SHUTDOWN NORMAL command is issued to the ASM instance， before shutting down， the ASM instance waits for the dependent database instances to shut down.

    D

     If the SHUTDOWN TRANSACTIONAL command is issued to the ASM instance， the ASM instance passes the same SHUTDOWN command to the dependent database instances， but does not wait for any active transactions to complete before it shuts down.


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    You are managing an Oracle Database 11g instance with ASM storage. The ASM instance is down. To know the details of the disks in the DATA disk group ，you issued the following ASMCMD command：   ASMCMD> lsdsk -I -d DATA   Which statement is true regarding the outcome of this command？（）
    A

     The command succeeds but it retrieves only the disk names.

    B

     The command produces an error because the ASM instance is down.

    C

     The command succeeds but it shows only the status of the ASM instance.

    D

     The command succeeds and retrieves information by scanning the disk headers based on an  ASM_DISKSTRING  value.


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    An administrator is testing setting the IP address on a Linux server from command line. Which of the following commands is used to set the default gateway for the server？（）
    A

    route

    B

    traceroute

    C

    ipconfig

    D

    nmap


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    You issued the following commands to configure setting in RMAN; Then you issued the following command to take the backup: RMAN> BACKUP DATABASE PLUS ARCHIVELOG; Which statement is true about the execution of the above command?（）
    A

    The backup will terminate because the FORMAT clause was not configured for the channel

    B

    It backs up two copies of data files to tape and disk, and two copies of archived log file on tape

    C

    It backs up the data files and archived log files to disk, making two copies of each data file and archived log file

    D

    It backs up the data files and archived log files to tape, making two copies of each data file and archived log file


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    You are managing an Oracle Database 11g instance with ASM storage. The ASM instance is down. To know the details of the disks in the DATA disk group , you issued the following ASMCMD command: ASMCMD> lsdsk -I -d DATA Which statement is true regarding the outcome of this command?（）
    A

    The command succeeds but it retrieves only the disk names.

    B

    The command produces an error because the ASM instance is down.

    C

    The command succeeds but it shows only the status of the ASM instance.

    D

    The command succeeds and retrieves information by scanning the disk headers based on an ASM_DISKSTRING value.


    正确答案： D
    解析： 暂无解析

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