更多"You need to change the definition o"的相关试题:
[单项选择]You need to change the definition of an existing table. The COMMERCIALS table needs its DESCRIPTION column changed to hold varying length characters up to 1000 bytes. The column can currently hold 500 bytes per value. The table contains 20000 rows. Which statement is valid?（）
A. ALTER TABLE commercials MODIFY (description CHAR2(1000));
B. ALTER TABLE commercials CHANGE (description CHAR2(1000));
C. ALTER TABLE commercials CHANGE (description VARCHAR2(1000));
D. ALTER TABLE commercials MODIFY (description VARCHAR2(1000));
E. You cannot increase the size of a column if the table has rows.
[多项选择]You are troubleshooting a routing issue and need to check the hop-by-hop path to the 10.10.10.10 destination. Which three commands would display the path?（）
A. user@router# traceroute 10.10.10.10
B. user@router> ping record-route 10.10.10.10
C. user@router>traceroute 10.10.10.10
D. user@router# run traceroute 10.10.10.10
E. user@router# ping record-route 10.10.10.10
[单项选择] You enable block change tracking. You issue the following command: BACKUP INCREMENTAL LEVEL 0 DATABASE; The next day, you issue the following command: BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which statement about the use of the change tracking file is true?（）
A. RMAN reads the block change tracking file only when it performs the incremental level 0 backup.
B. RMAN reads the block change tracking file when it performs both incremental backups.
C. RMAN reads the block change tracking file only when it performs the incremental level 1 backup.
D. RMAN does not read the block change tracking file when it performs either incremental backup.
[单项选择] You need to change the hostname and IP address of a server. Without manually editing all of the required files， which command can be run to restore a system configuration to an unconfigured state， ready to be reconfigured again restore a system configuration to an unconfigured state， ready to be reconfigured again？ （）
A. /usr/sbin/sys-unconfig
B. /usr/sbin/unconfig
C. /sbin/ipconfig
D. /usr/sbin/set_parms initial
[多项选择]You need to add a reservation for a print device to a DHCP scope.Which two components should you include in the reservation？（）
A. the default gateway
B. the IP address
C. the MAC address
D. the printer server name
E. the subnet mask
[单项选择]You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface.You have decided to use a firewall filter.How should you apply the firewall filter?（）
A. as an outbound filter on interface fxp0
B. as an outbound filter on interface lo0
C. as an inbound filter on interface fxp0
D. as an inbound filter on interface lo0
[单项选择]If you ______a touch-tone phone, you won't need an operator.
A. (A) had
B. (B) are having
C. (C) have
D. (D) will have
[单项选择]You don't need to carry large amounts of cash; actually all financial {{U}}businesses{{/U}} will be conducted by computers.
A. transmissions
B. transitions
C. transactions
D. transportation
[单项选择]You need to change the text of a pop-up menu that appears when a user right clicks the mouse in the EMP_DATA data block. Where could you find the node for the pop-up menu in the Object Navigator?（）
A. Built-in Packages
B. Menus
C. PL/SQL Libraries
D. Object Libraries
E. Form Module
[单项选择]Which is the telephone number you need when you intend to book a double room at Ramada Inn
A. 1-800-667-8868 or (250) 374-4788.
B. 1-800-575-7322 or (250) 851-0111.
C. 1-800-726-3626 or (250) 374-1218.
D. 14100-663-2832 or (260) 374-0358.
