Network and Security- Foundations- D315
EXAM STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH VERIFIED
CORRECT ANSWERS || 100%
GUARANTEED PASS <NEWEST VERSION>
802.11a/Wireless-A - ANSWER wireless 5GHz - 54Mbps - *75ft*
802.11b/Wireless-B - ANSWER wireless 2.4GHz - *11Mbps* - 100-150ft
802.11g/Wireless-G - ANSWER 2.4GHz - *54Mbps - 150ft*
802.11ac/Wireless-AC - ANSWER 5GHz - *1.3Gbps*
802.11n/Wireless-N - ANSWER 2.4GHz - *200+Mbps*
2.4GHz - ANSWER Frequency ranges of 802.11G/802.11B
5GHz - ANSWER Frequency ranges of 802.11AC/802.11A
Application Layer - ANSWER Layer 7 in the OSI model. Support for
applications. Examples: HTTP, FTP, SMTP
Presentation Layer - ANSWER Layer 6 in the OSI model. Protocol conversion,
data translation. Examples: ASCII, JPEG
, Session Layer - ANSWER Layer 5 in the OSI model. Establishes, manages, and
terminates sessions. Examples: NFS, SQL
Transport Layer - ANSWER Layer 4 in the OSI model. Ensures error-free
packets. Examples: TCP, UDP
Network Layer - ANSWER Layer 3 in the OSI model. Provides routing decisions.
Examples: IP, IPX
WAN - ANSWER A network that is used to connect computer networks and LANs
over vast geographical distances.
tracecert - ANSWER The Windows network command that displays the path a
packet takes from source to destination.
PaaS - ANSWER A cloud service model best for software development
companies that want to develop and test software applications without managing
the underlying infrastructure.
STP cables - ANSWER Preferred over UTP cables in environments with high
electromagnetic interference (EMI).
Firewall - ANSWER To filter incoming and outgoing traffic based on a set of
rules.
OSI model vs TCP/IP model - ANSWER OSI has 7 layers, while TCP/IP has 4
layers.
, ipconfig - ANSWER The command a network administrator should use to get the
IP Address of the Windows computer they are working on.
nslookup - ANSWER The command a network admin would use to query a DNS
server to resolve a hostname or domain name to an IP address.
Router - ANSWER To connect multiple networks and route data packets between
them.
PAN - ANSWER A type of network used for device communication over a short
distance, such as connecting wireless earbuds to a cell phone.
Layer 5 - Session - ANSWER The layer of the OSI model that establishes,
manages, and terminates connections with a remote device.
IaaS - ANSWER Provides physical computing resources, virtualized and delivered
over the internet.
Presentation layer - ANSWER Handles data encryption, decryption, and
formatting.
CAN - ANSWER A type of network typically used to connect multiple buildings.
MAC Address - ANSWER Operates at Layer 2 - Data Link of the OSI model.
LAN - ANSWER A type of network typically used to connect devices within a
single building.
, WAP - ANSWER A device commonly used to provide wireless connectivity to
devices in a local area network (LAN).
CAT6 cable - ANSWER An example of a UTP cable.
Client/server architecture - ANSWER Centralized configuration, where the
configuration is done on a central server and pushed to all other devices.
OSI layers order - ANSWER Application, Presentation, Session, Transport,
Network, Data Link, Physical.
Fiber optic cables - ANSWER Have a major advantage of higher data
transmission speed and longer cable runs over Twisted Pair cables.
Private Cloud - ANSWER A type of deployment most likely to use dedicated
hardware for cloud services.
IP Address - ANSWER Operates at Layer 3 - Network of the OSI model.
arp - ANSWER The network command that displays the IP Address to MAC
Address mapping on a Windows computer.
ifconfig - ANSWER The command a network administrator should use on a Linux
computer to get the IP Address of the computer they are working on.
netstat - ANSWER The command a network admin should use to see if a TCP
connection is active on a Windows computer.
EXAM STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH VERIFIED
CORRECT ANSWERS || 100%
GUARANTEED PASS <NEWEST VERSION>
802.11a/Wireless-A - ANSWER wireless 5GHz - 54Mbps - *75ft*
802.11b/Wireless-B - ANSWER wireless 2.4GHz - *11Mbps* - 100-150ft
802.11g/Wireless-G - ANSWER 2.4GHz - *54Mbps - 150ft*
802.11ac/Wireless-AC - ANSWER 5GHz - *1.3Gbps*
802.11n/Wireless-N - ANSWER 2.4GHz - *200+Mbps*
2.4GHz - ANSWER Frequency ranges of 802.11G/802.11B
5GHz - ANSWER Frequency ranges of 802.11AC/802.11A
Application Layer - ANSWER Layer 7 in the OSI model. Support for
applications. Examples: HTTP, FTP, SMTP
Presentation Layer - ANSWER Layer 6 in the OSI model. Protocol conversion,
data translation. Examples: ASCII, JPEG
, Session Layer - ANSWER Layer 5 in the OSI model. Establishes, manages, and
terminates sessions. Examples: NFS, SQL
Transport Layer - ANSWER Layer 4 in the OSI model. Ensures error-free
packets. Examples: TCP, UDP
Network Layer - ANSWER Layer 3 in the OSI model. Provides routing decisions.
Examples: IP, IPX
WAN - ANSWER A network that is used to connect computer networks and LANs
over vast geographical distances.
tracecert - ANSWER The Windows network command that displays the path a
packet takes from source to destination.
PaaS - ANSWER A cloud service model best for software development
companies that want to develop and test software applications without managing
the underlying infrastructure.
STP cables - ANSWER Preferred over UTP cables in environments with high
electromagnetic interference (EMI).
Firewall - ANSWER To filter incoming and outgoing traffic based on a set of
rules.
OSI model vs TCP/IP model - ANSWER OSI has 7 layers, while TCP/IP has 4
layers.
, ipconfig - ANSWER The command a network administrator should use to get the
IP Address of the Windows computer they are working on.
nslookup - ANSWER The command a network admin would use to query a DNS
server to resolve a hostname or domain name to an IP address.
Router - ANSWER To connect multiple networks and route data packets between
them.
PAN - ANSWER A type of network used for device communication over a short
distance, such as connecting wireless earbuds to a cell phone.
Layer 5 - Session - ANSWER The layer of the OSI model that establishes,
manages, and terminates connections with a remote device.
IaaS - ANSWER Provides physical computing resources, virtualized and delivered
over the internet.
Presentation layer - ANSWER Handles data encryption, decryption, and
formatting.
CAN - ANSWER A type of network typically used to connect multiple buildings.
MAC Address - ANSWER Operates at Layer 2 - Data Link of the OSI model.
LAN - ANSWER A type of network typically used to connect devices within a
single building.
, WAP - ANSWER A device commonly used to provide wireless connectivity to
devices in a local area network (LAN).
CAT6 cable - ANSWER An example of a UTP cable.
Client/server architecture - ANSWER Centralized configuration, where the
configuration is done on a central server and pushed to all other devices.
OSI layers order - ANSWER Application, Presentation, Session, Transport,
Network, Data Link, Physical.
Fiber optic cables - ANSWER Have a major advantage of higher data
transmission speed and longer cable runs over Twisted Pair cables.
Private Cloud - ANSWER A type of deployment most likely to use dedicated
hardware for cloud services.
IP Address - ANSWER Operates at Layer 3 - Network of the OSI model.
arp - ANSWER The network command that displays the IP Address to MAC
Address mapping on a Windows computer.
ifconfig - ANSWER The command a network administrator should use on a Linux
computer to get the IP Address of the computer they are working on.
netstat - ANSWER The command a network admin should use to see if a TCP
connection is active on a Windows computer.
