Certiport IT Specialist Certification Exam Section 1 & 2
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27 Terms
What is the Internet of Things (IOT) ?
an idea that all devices are connected to the internet
What is internet?
interconnected networks
What is Intranet?
allows only users within an organization to access
What is Extranet?
allows business and educational organizations to access
What is a virtual machine?
a software enabled emulated operating system
Unicast is 1 to 1 communication
true
multicast is 1 to many communication
true
broadcast is one to all communications
true
what is a VPN(Virtual Private Network)?
a network service that encrypts and secures a data connection to a company LAN
What is Remote Desktop: Port 3389?
it allows remote connection to another computer system
What is a perimeter Network = DMZ?
it protects private networks (Internal Lan) from the Internet
A web server should be placed in the perimeter network
true
802.11a stanard is 54mbps and 5.0 ghz
true
What is 802.11b standard?
11 Mbps & 2.4 Ghz
What is 802.11g standard
54 mbps & 2.4 ghz
What is 802.11n standard
600 mbps & 2.4/5.0 ghz
What is 802.11ac standard
1.3Gbps & 2.4/5.0A/5.0 B ghz
Is WEP encrypted?
No, it is weak and susceptible to hacks
What is WPA?
stronger that WEP, but weaker that WPA2
What is WPA2?
Pre-shared key, the strongest and most recommended wireless security setting
What is WPA/WPA2 Enterprise?
Uses a RADIUS Server for companies
What is 802.1x?
a wireless setting that uses security certifications
What are two advantages of Star Topology?
flexibility(easy to change) and scalability (it can be used in a large situation)
What are advantages of Mesh Topology?
very redundant(if something breaks it doesn't shutdown the whole system) and every machine is connected to each other
what is the central device of a Star ?
switch
What is VLAN?
Virtual Local Area Network - treated like a subnet but with more security
What are the 3 properties of VLAN?
1)Requires a router
2)Isolates traffic
3)Creates the same LAN regardless of physical location, reduces nodes in broadcast