Explain the notion of spooling and why it is useful.
What will be an ideal response?
In spooling, a high-speed device like a disk is interposed between a running program and a low-speed I/O device. This prevents the program execution time from being limited by the speed of the I/O device. One of the most common types of spooling is print spooling. Instead of a program directing its output to a relatively slow mechanical printing device, output is placed in a disk file (spool file).The program can run at the speed of the disk and therefore finish more quickly.When the printer becomes available, it reads the data from the spool file. Because the disk is much faster than the printer, the spooling program can drive the printer at top speed while the original user program proceeds with new activities in parallel with the spooling (this is one of the most common forms of multitasking, especially on personal computers).
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Which Cisco IOS command is used on a trunking interface to disable VLAN 20 from being sent across the trunk?
A) switchport vlan remove 20 B) switchport trunk allowed vlan remove 20 C) switchport trunk remove 20 D) switchport vlan trunk remove 20
Answer the following statements true (T) or false (F)
1. Integrity-related email security threats could result in unauthorized disclosure of sensitive information. 2. The MIME-Version field must have the parameter value 1.0 in order for the message to conform to RFCs 2045 and 2046. 3. For the text type of body no special software is required to get the full meaning of the text aside from support of the indicated character set. 4. The objective of MIME Transfer Encodings is to provide reliable delivery across the largest range of environments. 5. DKIM is designed to provide an email authentication technique that is not transparent to the end user.