FTP performs basic interactive file transfers between hosts.（)

A.DNS

B. DHCP

C. WINS

D. FTP

A.FTP

B. DHCP

C. DNS

D. WINS

A.marketing

B.package

C.quality

D.transportation

The group of technicians are engaged in a study which all aspects Of urban planning.

A) embraces B) performs C) inserts D) grips

(71)

A. CPU

B. Disk

C. Memory

D. I/O

55 In a contract, the point of total assumption refers to the point where:

A. The customer incurs the total financial responsibility for each additional dollar spent.

B. The contractor incurs the total financial responsiblity for each dollar spent.

C. The schedule and cost variance are zero.

D. The customer will incur no further costs for the work the contractor performs in the completion of the contract.

E. B and D only

A. It permanently switches to the low_group consumer group if the session exceeds 10,000 I/O requests or 2,500 MB of data transfer.

B. It performs the first 10000 I/O requests or 2,500 MB of data transfer in the LOW-GROUP consumer group, and then switches to the original group.

C. It switches to the LOW_GROUP consumer group if the session exceeds 10000 I/O requests or 2500 MB of data transfer and returns to the original group after the operation.

D. It switches to the LOW_GROUP consumer group if the session exceeds 10000 I/O requests or 2500MB of data transfer for queries, but not for data manipulation language (DML) operations.

the(136)information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.The still active side of a half-open connections can close the connection using a(137)timer. This timer measures the time the transport machine will continue to await an(138)of a transmitted segment after the segment has been retransmitted the maximum number of times. When the timer(139), the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user.In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment, the failed side returns an RST i to every segment i that it receives, when the RST i reaches the other side, it must be checked for validity based on the(140)number i, as the RST could be in response to an old segment, if the reset is valid, the transport entity performs an abnormal termination.

A．data

B．state

C．signal

D．control

运行下列程序：

Private Sub Command1_Click()

s1 = "Basic"

For i = 1 To Len(s1)

t = Mid(s1, i, 1)

s2 = s2 + Chr(Asc(t) + 1)

Next i

Debug.Print s2

End Sub

单击Command1命令按钮后，则在立即窗口上输出结果是()。

A.Cbtjd

B.65

C.Basic

D.出错