THINGS YOU NEED TO KNOW

Question 1

ipconfig /flushdns command provides you with what ?

Answer 1

the means to flush and reset the contents of the DNS client resolver cache

Question 2

VM escape refers to?

Answer 2

malware running on a guest OS jumping to another guest or the host
(VM escape is the biggest threat to virtualized systems)

Question 3

A virtual network interface card (vNIC) represents what?

Answer 3

The VM is connected to a network (Can have multiple)

Question 4

A rogue VM is what?

Answer 4

is a VM that has been installed without authorization

Question 5

VM sprawl is what?

Answer 5

the uncontrolled deployment of more and more VMs

Question 6

A dynamic IP address should be used for what?

Answer 6

client workstations and devices to ensure they are easy to configure and less prone to human error

Question 7

A static IP address should be used for what?

Answer 7

servers to ensure they are easy to find, access, and manage on the network

Question 8

Automatic Private IP Addressing (APIPA) is a feature of Windows-based operating systems that enables what?

Answer 8

a computer to automatically assign itself an IP address when there is no Dynamic Host Configuration Protocol (DHCP) server available to perform that function
(considered a Link-local adress)

Question 9

STP (Shielded Twisted Pair) is a type of cabling that can help prevent what?

Answer 9

electrical interferences or cross-talk
(cross-talk can cause CRC “Cyclic Redundancy Check” errors)

Question 10

Coaxial and fiber are what number of CAT cables?

Answer 10

CAT 6

Question 11

what are we talking about when we say Intel CPU architecture implemented to expose two or more logical processors to the OS to deliver performance benefits
(virtualized environment)

Answer 11

HyperThreading (HT)
( it’s like multi-core but for virtual machines)

Question 12

what am I talking about when i say a microprocessor on a single integrated circuit with two or more separate processing units, called cores (for example, dual-core or quad-core), each of which reads and executes program instructions

Answer 12

multi-core processing
(for physical computers)
(not virtual)

Question 13

VM can communicate between the host and the other VMs

Answer 13

internal

Question 14

VMs would have internet access

Answer 14

external

Question 15

create a switch that is usable only by the VMs

Answer 15

private
(The VMs cannot use the switch to communicate with the host)

Question 16

each VM could only communicate with itself

Answer 16

localhost

Question 17

HSPA+ and EV-DO. HSPA+ (Evolved High-Speed Packet Access) is which cellular

Answer 17

3G

Question 18

Long Term Evolution & LTE Advanced
(LTE and LTA-A)
is what cellular

Answer 18

4G

Question 19

Low-band 5G reaches speeds of?

Answer 19

55 Mbps with a theoretical speed of 150 Mbps

Question 20

Mid-band 5G reaches an average speed of?

Answer 20

150 Mbps with a theoretical speed of 1.5 Gbps

Question 21

High-band 5G reaches an average speed of?

Answer 21

3 Gbps with a theoretical speed of up to 70 Gbps

Question 22

IMAP it to receive or to send emails?

Answer 22

receive emails

Question 23

SMTP is to receive or to send emails

Answer 23

send emails

Question 24

A coaxial cable is a cable used to?

Answer 24

transmit video, communications, and audio
(most commonly used as a cable to connect a TV to a cable TV service)

Question 25

Which RAIDS are failure resistant
(protect against loss of data)

Answer 25

RAID 1 / RAID 5

Question 26

Which RAID is fault tolerant
(can still function even if a disk fails)

Answer 26

RAID 1 / RAID 5 / RAID 6

Question 27

Which RAID is disaster tolerant
(RAID with two independent zones with full data access)

Answer 27

RAID 10

Question 28

Which frequency standard is in the 5 GHz band

Answer 28

802.11a , 802.11n , 802.11ac ,
802.11ax

Question 29

Which frequency standard is in the 2.4 GHz band

Answer 29

802.11b , 802.11g , 802.11n ,
802.11ax