CCNA 1 Modules 1 – 17 with all Correct & 100%
Verified Answers| Actual Complete Exam| Already
Graded A+ (Just Released)
Q: What is a network ✔Correct Answer-A: A network is a group of devices that are connected
together to share resources and communicate with each other.
Q: What is a protocol ✔Correct Answer-A: A protocol is a set of rules and standards that govern the
way devices communicate with each other over a network.
Q: What is the purpose of the OSI model ✔Correct Answer-A: The purpose of the OSI model is to
provide a framework for organizing and understanding how network protocols and technologies
work together.
Q: What are the seven layers of the OSI model ✔Correct Answer-A: The seven layers of the OSI
model are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Q: What is the purpose of the Physical layer ✔Correct Answer-A: The purpose of the Physical layer
is to transmit bits over a physical medium.
Q: What is the purpose of the Data Link layer ✔Correct Answer-A: The purpose of the Data Link
layer is to provide a reliable and error-free transfer of data between devices on the same network
segment.
Q: What is the purpose of the Network layer ✔Correct Answer-A: The purpose of the Network
layer is to provide logical addressing and routing of data between devices on different network
segments.
Q: What is the purpose of the Transport layer ✔Correct Answer-A: The purpose of the Transport
layer is to provide reliable end-to-end delivery of data between devices.
Q: What is the purpose of the Session layer ✔Correct Answer-A: The purpose of the Session layer is
to establish, manage, and terminate sessions between applications.
Q: What is the purpose of the Presentation layer ✔Correct Answer-A: The purpose of the
Presentation layer is to provide services that format, encrypt, or compress data to be exchanged
between applications.
Q: What is the purpose of the Application layer ✔Correct Answer-A: The purpose of the
Application layer is to provide access to network resources for applications and end users.
Q: What is an IP address ✔Correct Answer-A: An IP address is a unique identifier assigned to a
device on a network to enable communication with other devices on the network.
Q: What is the purpose of a subnet mask ✔Correct Answer-A: The purpose of a subnet mask is to
divide an IP address into a network portion and a host portion, enabling the device to determine
which network it belongs to and which devices are on the same network.
,Q: What is a node in a network ✔Correct Answer-A: A node is any device connected to a network,
such as a computer, printer, or router.
Q: What is a protocol in networking ✔Correct Answer-A: A protocol is a set of rules that governs
the way devices communicate on a network.
Q: What is the role of a NIC ✔Correct Answer-A: A NIC (Network Interface Card) is a device that
enables a node to connect to a network and communicate with other devices.
Q: What is the purpose of a MAC address ✔Correct Answer-A: A MAC (Media Access Control)
address is a unique identifier assigned to a NIC, which enables devices to communicate with each
other on a local network.
Q: What is the difference between a LAN and a WAN ✔Correct Answer-A: A LAN (Local Area
Network) is a network that covers a small geographical area, such as an office or a building, while a
WAN (Wide Area Network) covers a large geographical area, such as a city or a country.
Q: What is a hub ✔Correct Answer-A: A hub is a device that connects multiple devices on a LAN
and broadcasts data to all devices connected to it.
Q: What is the purpose of an IP address ✔Correct Answer-A: An IP (Internet Protocol) address is a
unique identifier assigned to a node on a network, which enables devices to communicate with each
other on a global network, such as the internet.
Q: What is the difference between IPv4 and IPv6 ✔Correct Answer-A: IPv4 uses 32-bit addresses,
while IPv6 uses 128-bit addresses, providing a much larger address space for future growth of the
internet.
Q: What is DNS ✔Correct Answer-A: DNS (Domain Name System) is a system that translates
human-readable domain names, such as www.example.com, into IP addresses that computers can
use to communicate with each other.
Q: What is the purpose of a router ✔Correct Answer-A: The purpose of a router is to connect
different networks and direct traffic between them.
Q: What is the difference between a distance vector and link-state routing protocol ✔Correct
Answer-A: Distance vector protocols use a simple algorithm that relies on hop counts to determine
the best path, while link-state protocols use more complex algorithms that consider additional
metrics such as bandwidth and delay.
Q: What is the purpose of a default route ✔Correct Answer-A: The purpose of a default route is to
forward packets to destinations outside of the router's directly connected networks.
Q: What is a routing loop ✔Correct Answer-A: A routing loop occurs when packets are continuously
forwarded between two or more routers in a network without reaching their destination.
Q: What is administrative distance ✔Correct Answer-A: Administrative distance is a metric used to
compare the trustworthiness of routing information from different sources, with lower values being
more trustworthy.
, Q: What is a routing metric ✔Correct Answer-A: A routing metric is a value used by a routing
protocol to determine the best path to a destination network.
Q: What is a router advertisement ✔Correct Answer-A: A router advertisement is a message sent
by a router to inform other routers on the network about its existence and the networks it is
connected to.
Q: What is a router solicitation ✔Correct Answer-A: A router solicitation is a message sent by a
host to ask for the IP address of a router on the network.
Q: What is a link-local address ✔Correct Answer-A: A link-local address is an IP address that is only
valid on a single network segment and is used for communication between devices on that segment.
Q: What is a packet ✔Correct Answer-A: A packet is a unit of data that is transmitted between
devices over a network.
Q: What is the purpose of the Transport Control Protocol (TCP) ✔Correct Answer-A: The purpose of
TCP is to provide reliable, ordered, and error-checked delivery of data between applications running
on hosts communicating over an IP network.
Q: What is the purpose of the User Datagram Protocol (UDP) ✔Correct Answer-A: The purpose of
UDP is to provide a lightweight and low-overhead protocol for applications that do not require
reliable data delivery.
Q: What is flow control ✔Correct Answer-A: Flow control is a mechanism that allows for the
control of the rate of data transmission between devices.
Q: What is congestion control ✔Correct Answer-A: Congestion control is a mechanism that
prevents network congestion by controlling the rate of data transmission.
Q: What is latency ✔Correct Answer-A: Latency is the time it takes for a packet to travel from its
source to its destination.
Q: What is throughput ✔Correct Answer-A: Throughput is the amount of data that can be
transmitted over a network in a given amount of time.
Q: What is a socket ✔Correct Answer-A: A socket is an endpoint of a two-way communication link
between two programs running on a network.
Q: What is a port number ✔Correct Answer-A: A port number is a 16-bit number used to identify
specific processes or services running on a device in a network.
Q: What is a socket address ✔Correct Answer-A: A socket address is the combination of an IP
address and a port number, used to identify a specific socket on a device.
Q: What is the default subnet mask for a Class A network ✔Correct Answer-A: The default subnet
mask for a Class A network is 255.0.0.0.
Q: What is the default subnet mask for a Class B network ✔Correct Answer-A: The default subnet
mask for a Class B network is 255.255.0.0.
Verified Answers| Actual Complete Exam| Already
Graded A+ (Just Released)
Q: What is a network ✔Correct Answer-A: A network is a group of devices that are connected
together to share resources and communicate with each other.
Q: What is a protocol ✔Correct Answer-A: A protocol is a set of rules and standards that govern the
way devices communicate with each other over a network.
Q: What is the purpose of the OSI model ✔Correct Answer-A: The purpose of the OSI model is to
provide a framework for organizing and understanding how network protocols and technologies
work together.
Q: What are the seven layers of the OSI model ✔Correct Answer-A: The seven layers of the OSI
model are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Q: What is the purpose of the Physical layer ✔Correct Answer-A: The purpose of the Physical layer
is to transmit bits over a physical medium.
Q: What is the purpose of the Data Link layer ✔Correct Answer-A: The purpose of the Data Link
layer is to provide a reliable and error-free transfer of data between devices on the same network
segment.
Q: What is the purpose of the Network layer ✔Correct Answer-A: The purpose of the Network
layer is to provide logical addressing and routing of data between devices on different network
segments.
Q: What is the purpose of the Transport layer ✔Correct Answer-A: The purpose of the Transport
layer is to provide reliable end-to-end delivery of data between devices.
Q: What is the purpose of the Session layer ✔Correct Answer-A: The purpose of the Session layer is
to establish, manage, and terminate sessions between applications.
Q: What is the purpose of the Presentation layer ✔Correct Answer-A: The purpose of the
Presentation layer is to provide services that format, encrypt, or compress data to be exchanged
between applications.
Q: What is the purpose of the Application layer ✔Correct Answer-A: The purpose of the
Application layer is to provide access to network resources for applications and end users.
Q: What is an IP address ✔Correct Answer-A: An IP address is a unique identifier assigned to a
device on a network to enable communication with other devices on the network.
Q: What is the purpose of a subnet mask ✔Correct Answer-A: The purpose of a subnet mask is to
divide an IP address into a network portion and a host portion, enabling the device to determine
which network it belongs to and which devices are on the same network.
,Q: What is a node in a network ✔Correct Answer-A: A node is any device connected to a network,
such as a computer, printer, or router.
Q: What is a protocol in networking ✔Correct Answer-A: A protocol is a set of rules that governs
the way devices communicate on a network.
Q: What is the role of a NIC ✔Correct Answer-A: A NIC (Network Interface Card) is a device that
enables a node to connect to a network and communicate with other devices.
Q: What is the purpose of a MAC address ✔Correct Answer-A: A MAC (Media Access Control)
address is a unique identifier assigned to a NIC, which enables devices to communicate with each
other on a local network.
Q: What is the difference between a LAN and a WAN ✔Correct Answer-A: A LAN (Local Area
Network) is a network that covers a small geographical area, such as an office or a building, while a
WAN (Wide Area Network) covers a large geographical area, such as a city or a country.
Q: What is a hub ✔Correct Answer-A: A hub is a device that connects multiple devices on a LAN
and broadcasts data to all devices connected to it.
Q: What is the purpose of an IP address ✔Correct Answer-A: An IP (Internet Protocol) address is a
unique identifier assigned to a node on a network, which enables devices to communicate with each
other on a global network, such as the internet.
Q: What is the difference between IPv4 and IPv6 ✔Correct Answer-A: IPv4 uses 32-bit addresses,
while IPv6 uses 128-bit addresses, providing a much larger address space for future growth of the
internet.
Q: What is DNS ✔Correct Answer-A: DNS (Domain Name System) is a system that translates
human-readable domain names, such as www.example.com, into IP addresses that computers can
use to communicate with each other.
Q: What is the purpose of a router ✔Correct Answer-A: The purpose of a router is to connect
different networks and direct traffic between them.
Q: What is the difference between a distance vector and link-state routing protocol ✔Correct
Answer-A: Distance vector protocols use a simple algorithm that relies on hop counts to determine
the best path, while link-state protocols use more complex algorithms that consider additional
metrics such as bandwidth and delay.
Q: What is the purpose of a default route ✔Correct Answer-A: The purpose of a default route is to
forward packets to destinations outside of the router's directly connected networks.
Q: What is a routing loop ✔Correct Answer-A: A routing loop occurs when packets are continuously
forwarded between two or more routers in a network without reaching their destination.
Q: What is administrative distance ✔Correct Answer-A: Administrative distance is a metric used to
compare the trustworthiness of routing information from different sources, with lower values being
more trustworthy.
, Q: What is a routing metric ✔Correct Answer-A: A routing metric is a value used by a routing
protocol to determine the best path to a destination network.
Q: What is a router advertisement ✔Correct Answer-A: A router advertisement is a message sent
by a router to inform other routers on the network about its existence and the networks it is
connected to.
Q: What is a router solicitation ✔Correct Answer-A: A router solicitation is a message sent by a
host to ask for the IP address of a router on the network.
Q: What is a link-local address ✔Correct Answer-A: A link-local address is an IP address that is only
valid on a single network segment and is used for communication between devices on that segment.
Q: What is a packet ✔Correct Answer-A: A packet is a unit of data that is transmitted between
devices over a network.
Q: What is the purpose of the Transport Control Protocol (TCP) ✔Correct Answer-A: The purpose of
TCP is to provide reliable, ordered, and error-checked delivery of data between applications running
on hosts communicating over an IP network.
Q: What is the purpose of the User Datagram Protocol (UDP) ✔Correct Answer-A: The purpose of
UDP is to provide a lightweight and low-overhead protocol for applications that do not require
reliable data delivery.
Q: What is flow control ✔Correct Answer-A: Flow control is a mechanism that allows for the
control of the rate of data transmission between devices.
Q: What is congestion control ✔Correct Answer-A: Congestion control is a mechanism that
prevents network congestion by controlling the rate of data transmission.
Q: What is latency ✔Correct Answer-A: Latency is the time it takes for a packet to travel from its
source to its destination.
Q: What is throughput ✔Correct Answer-A: Throughput is the amount of data that can be
transmitted over a network in a given amount of time.
Q: What is a socket ✔Correct Answer-A: A socket is an endpoint of a two-way communication link
between two programs running on a network.
Q: What is a port number ✔Correct Answer-A: A port number is a 16-bit number used to identify
specific processes or services running on a device in a network.
Q: What is a socket address ✔Correct Answer-A: A socket address is the combination of an IP
address and a port number, used to identify a specific socket on a device.
Q: What is the default subnet mask for a Class A network ✔Correct Answer-A: The default subnet
mask for a Class A network is 255.0.0.0.
Q: What is the default subnet mask for a Class B network ✔Correct Answer-A: The default subnet
mask for a Class B network is 255.255.0.0.
