CERTIPORT UPDATED EXAM SCRIPT QUESTIONS AND
ANSWERS RATED A+
✔✔Star Topology - ✔✔Each computer is connected by a single cable.
Their is a central connectivity device.
✔✔Ring Topology - ✔✔Each workstation acts as a repeater.
Each node is connected to 2 other nodes.
✔✔2 Advantages of Star vs Ring - ✔✔Flexibility and scalability
✔✔Mesh advantages - ✔✔Redundancy, every machine connected to others
✔✔802.11a - ✔✔5 GHz, 54 Mbps
✔✔802.11b - ✔✔11 Mbps, 2.4 GHz
✔✔802.11g - ✔✔54 Mbps, 2.4 GHz
✔✔802.11n - ✔✔600 Mbps - 5GHz and 2.4GHzm, MIMO
uses dual antennas, MIMO, channel bonding, frame aggregation
✔✔802.11ac - ✔✔2.4GHz 5.0aGHz 5.0GHzb 1300mbps
MU-MIMO
✔✔SSL VPN - ✔✔allows a remote user to connect to a private network from anywhere
on the internet.
✔✔Layer 2 Tunneling Protocol (L2TP) - ✔✔creates an unencrypted connection
between 2 network devices.
✔✔site-to-site VPN - ✔✔securely connects 2 portions of a private network or 2 private
networks.
✔✔MAC/HW/physical address - ✔✔48 bits
✔✔Logical address IPv4 - ✔✔32 bits
✔✔IPv6 - ✔✔128 bits per address
✔✔Internet - ✔✔interconnected networks
✔✔Intranet - ✔✔allows only users within an organization access
, ✔✔Extranet - ✔✔allows certain business and educational organizations to access
✔✔Unicast - ✔✔1 to 1 communications
✔✔Multicast - ✔✔1 to many communications
✔✔Broadcast - ✔✔1 to all communications
✔✔Virtual machine - ✔✔software enabled operating system
✔✔Virtual Private Network (VPN) - ✔✔Network Service to encrypt and secure a
connection to company LAN (DirectAccess = without any user action)
✔✔Remote Desktop: Port 3389 - ✔✔allow remote connection to another computer
system
✔✔CSMA/CA - ✔✔Carrier Sense Multiple Access/Collision
Security is a concern wireless networks because of the radio broadcast access method
(CSMA/CA)
✔✔MU-MIMO - Multi User AND Multiple Input and Multiple Output - ✔✔Allows a WiFi
router to Communicate w/ multiple devices simultaneously (no waiting and this is
faster).
✔✔SSID (Service Set Identifier) - ✔✔Access Point Broadcast ID
✔✔WEP (Wired Equivalent Privacy) - ✔✔Weak and susceptible to hacks - Not
encrypted
✔✔WPA - ✔✔Wireless Protected Access
Stronger
✔✔WPA2 - ✔✔WiFi Protected Access 2
WPA2-PSK (Pre-shared key)
Strongest and recommended
✔✔WPA/WPA2-Enterprise - ✔✔802.1x, needs Radius server, various EAP's can be
used
Uses a RADIUS Server for companies
✔✔802.1x - ✔✔Uses security certificates
✔✔Central Device of a star - ✔✔Switch or Hub
ANSWERS RATED A+
✔✔Star Topology - ✔✔Each computer is connected by a single cable.
Their is a central connectivity device.
✔✔Ring Topology - ✔✔Each workstation acts as a repeater.
Each node is connected to 2 other nodes.
✔✔2 Advantages of Star vs Ring - ✔✔Flexibility and scalability
✔✔Mesh advantages - ✔✔Redundancy, every machine connected to others
✔✔802.11a - ✔✔5 GHz, 54 Mbps
✔✔802.11b - ✔✔11 Mbps, 2.4 GHz
✔✔802.11g - ✔✔54 Mbps, 2.4 GHz
✔✔802.11n - ✔✔600 Mbps - 5GHz and 2.4GHzm, MIMO
uses dual antennas, MIMO, channel bonding, frame aggregation
✔✔802.11ac - ✔✔2.4GHz 5.0aGHz 5.0GHzb 1300mbps
MU-MIMO
✔✔SSL VPN - ✔✔allows a remote user to connect to a private network from anywhere
on the internet.
✔✔Layer 2 Tunneling Protocol (L2TP) - ✔✔creates an unencrypted connection
between 2 network devices.
✔✔site-to-site VPN - ✔✔securely connects 2 portions of a private network or 2 private
networks.
✔✔MAC/HW/physical address - ✔✔48 bits
✔✔Logical address IPv4 - ✔✔32 bits
✔✔IPv6 - ✔✔128 bits per address
✔✔Internet - ✔✔interconnected networks
✔✔Intranet - ✔✔allows only users within an organization access
, ✔✔Extranet - ✔✔allows certain business and educational organizations to access
✔✔Unicast - ✔✔1 to 1 communications
✔✔Multicast - ✔✔1 to many communications
✔✔Broadcast - ✔✔1 to all communications
✔✔Virtual machine - ✔✔software enabled operating system
✔✔Virtual Private Network (VPN) - ✔✔Network Service to encrypt and secure a
connection to company LAN (DirectAccess = without any user action)
✔✔Remote Desktop: Port 3389 - ✔✔allow remote connection to another computer
system
✔✔CSMA/CA - ✔✔Carrier Sense Multiple Access/Collision
Security is a concern wireless networks because of the radio broadcast access method
(CSMA/CA)
✔✔MU-MIMO - Multi User AND Multiple Input and Multiple Output - ✔✔Allows a WiFi
router to Communicate w/ multiple devices simultaneously (no waiting and this is
faster).
✔✔SSID (Service Set Identifier) - ✔✔Access Point Broadcast ID
✔✔WEP (Wired Equivalent Privacy) - ✔✔Weak and susceptible to hacks - Not
encrypted
✔✔WPA - ✔✔Wireless Protected Access
Stronger
✔✔WPA2 - ✔✔WiFi Protected Access 2
WPA2-PSK (Pre-shared key)
Strongest and recommended
✔✔WPA/WPA2-Enterprise - ✔✔802.1x, needs Radius server, various EAP's can be
used
Uses a RADIUS Server for companies
✔✔802.1x - ✔✔Uses security certificates
✔✔Central Device of a star - ✔✔Switch or Hub
