[单项选择]Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintaineD.To fix this issue, at which layer should the troubleshooting process begin?（）
A. presentation
B. session
C. transport
D. network
E. physical

[单项选择]Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin?（）
A. presentation
B. session
C. transport
D. network
E. physical

[单项选择]The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
A. remain constant along the tubes length
B. be greatest in a single pass counter flow heat exchanger
C. remain constant throughout the heat exchanger
D. vary from section to section through out the heat exchanger

[单项选择]Which command can be used to verify the DLCI destination address in a Frame Relay static configuration?（）
A. show frame-relay end-to-end
B. show frame-relay map
C. show frame-relay lmi
D. show frame-relay pvc

[单项选择]Why is a data source required？（）
A.  Data source contains data required for impact event enrichment.
B.  Data source contains data required for calculating server downtime.
C.  Data source contains data required for services and other related service information.
D.  Data source contains data required for LDAP configurations， including login attempts and errors.

[单项选择]The special education class contained the slow learners, those with ______ or mental disabilities, or those whose behavior made it hard for them to learn.
A. physical
B. practical
C. natural
D. behavior

[多项选择]计量型Data与计数型Data比较，计量型Data一般：（）。
A. 易于收集，计算
B. 易于方便检测
C. 收集的Data较小
D. 提供的信息较多

[单项选择]Our journey was very slow because the train stopped {{U}}constantly{{/U}} at different village.
A. unceasingly
B. continuously
C. gradually
D. continually

[单项选择]Users are complaining of slow performance. The iostat command indicates hdiskxxx is extremely busy. There is no activity on any other hdisks in the same volume group. Which of the following is the best action to take?（）
A. Change intra policy to outer
B. Change intra policy to center
C. Change inter policy to maximum
D. Increase the physical partition size

[单项选择]Most medium and slow speed diesels are started by what medium?（）
A. Electric starting motors
B. Hydraulics
C. Compressed air
D. Ether

[单项选择]A technician has a laptop that is running slow and notices the fan is on high. Which of the following should the technician try FIRST?（）
A. Clean the heatsink assembly of debris.
B. Turn the fan off when the AC adapter is attached.
C. Turn the fan to low in the BIOS.
D. Replace the processor and fan.

[单项选择] A user reports that the wireless network is slow and is able to see and access shared folders that are unknown to the user. Which of the following is the cause of the problem?（）
A. The SSID broadcast is disabled.
B. Wireless router is improperly configured.
C. The user is connecting to the wrong SSID
D. The wireless NIC is defective.

[单项选择]A slow，gradual fall of the barometer indicates approaching（）.
A. gale force winds within 12 hours
B. blizzard conditions
C. deteriorating or unsettled weather
D. heavy，wind driven rain

[单项选择]The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and （） of the pistons in the cylinders.
A. crack
B. knocking
C. leaking
D. seizure

[单项选择]A slow rise in the barometric pressure forecasts（）.
A. rainy weather for the next 48 hours
B. high seas
C. improving weather conditions
D. deteriorating weather conditions

[单项选择]Running an electric winch at slow speed over a long period of time causes（）.
A. the speed to be retarded by the friction brake
B. a load to go downward at full speed
C. the circuit breaker to turn off
D. the resistors to overheat and eventually burn out

[单项选择] You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output: Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0), root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) ) Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000), root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1) agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER （　） Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000), root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?（）
A. CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)
B. SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'
C. SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()
D. SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'