What is an omnidirectional antenna and how is it used?
What will be an ideal response?
An omnidirectional antenna radiates the radio waves in all directions. Because the signal is diffused more than the signal of a directional antenna, it is likely to have less gain than a directional antenna. In wireless networking, an omnidirectional antenna is often used on an indoor network, in which users are mobile and need to broadcast and receive in all directions. In addition, the signal gain in an indoor network often does not have to be as high as for an outdoor network, because the indoor distances between wireless devices are shorter.
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Which type of security device can speed up Web page retrieval and shield hosts on the internal network?
A. caching firewall B. proxy server C. caching-only DNS server D. DMZ intermediary
What does it mean to extend a class?
What will be an ideal response?
In Kerberos, the Ticket Granting Ticket (TGT) is used for which of the following?
A. Identification B. Authorization C. Authentication D. Multifactor authentication
During the installation of ESXi 6.0, the following error message is reported: Hardware Virtualization is not a feature of the CPU, or is not enabled in the BIOS. Which condition would generate this message?
A. LAHF/SAHF is not enabled in the BIOS. B. NX/XD is not enabled in the BIOS. C. SSE3 is not enabled in the BIOS. D. Hyperthreading is not enabled in the BIOS.