单选题How many channels are defined in the IEEE 802.11b DSSS channel set?()A 3B 4C 11D 13E 14
单选题
How many channels are defined in the IEEE 802.11b DSSS channel set?()
A
3
B
4
C
11
D
13
E
14
参考解析
解析:
暂无解析
相关考题:
What is the maximum data rate specified for IEEE 802.11b WLANs()。 A.10MbpsB.11MbpsC.54MbpsD.100Mbps
Which spread spectrum technology does the 802.11b standard define for operation()。 A.IRB.DSSSC.FHSSD.DSSS and FHSSE.IR, FHSS, and DSSS
________will the discharging operations take?A.How longB.How lengthC.How many timesD.How many shift
锚链吃力如何?()A、How much weight is on the cable ?B、How many shackles are left ?C、How much shackles are left ?D、How many weight is on the cable ?
有多少节锚链在外?()A、How many shackles are out ?B、How much shackles are out ?C、How much cable is out ?D、How many cable is out ?
A particular cell is expected to support 6 Erlangs of traffic at 1% Grade of Service. How many traffic channels are required?()A、6B、13C、3D、15E、22
Which spread spectrum technology does the 802.11b standard define foroperation?()A、IRB、DSSSC、FHSSD、DSSS and FHSSE、IR,FHSS,and DSSS
单选题Examine this syntax which allocates channels during a parallel image copy: RMAN CONFIGURE DEVICE TYPE disk parallelism 4: 2 COPY 3 datafile 1 TO ‘/BACKUP/datafile1.dbf’, 4 datafile 2 TO ‘/BACKUP/datafile2.dbf’, 5 datafile 3 TO ‘/BACKUP/datafile3.dbf; RMANCOPY 2 datafile 4 TO ‘/BACKUP/datafile4.dbf’; How many channels are used?()A0B1C3D4
单选题You have configured the following: RMAN CONFIGURE DEFAULT DEVICE TYPE TO ’sbt’; new RMAN configuration parameters: CONFIGURE DEFAULT DEVICE TYPE TO ’sbt’; new RMAN configuration parameters are successfully stored RMAN SHOW DEVICE TYPE; RMAN configuration parameters are: CONFIGURE DEVICE TYPE SBT PARALLELISM 1; # CONFIGURE DEVICE TYPE DISK PARALLELISM 1; # RMAN CONFIGURE DEVICE TYPE SET PARALLELISM 5; RMAN SHOW DEVICE TYPE; RMAN configuration parameters are: CONFIGURE DEVICE TYPE SBT PARALLELISM 5; CONFIGURE DEVICE TYPE DISK PARALLELISM 1; # How many channels are allocated to SBT?()A0, because channels have not been defined.B3, as indicated by the degree of parallelism.C1, the default value when device is configured.D5, as indicated by the last parallelism command.
单选题Which spread spectrum technology does the 802.11b standard define for operation()。AIRBDSSSCFHSSDDSSS and FHSSEIR, FHSS, and DSSS