CCNA - NETWORK FUNDAMENTALS
EXAM WITH CORRECT ANSWERS
What is the number and name of the layers of the modern TCP/IP model? - Correct
Answers -There are 5 layers - Physical, Data Link, Network, Transport, and Application.
What is at Layer 1 of the TCP/IP model, the Physical layer? - Correct Answers -Physical
cables and connectors, and anything related to light or electricity traveling over cables.
What is at Layer 2 of the TCP/IP model, the Data Link layer? - Correct Answers -MAC
addresses with data structured into frames. The frames include the source and
destination MAC addresses in the header.
What is at Layer 3 of the TCP/IP model, the Network layer? - Correct Answers -Logical
addressing, such as IPv4 and IPv6 addresses that are globally unique and sent through
routers to reach their destinations.
What is at Layer 4 of the TCP/IP model, the Transport layer? - Correct Answers -1)
Transmission Control Protocol (TCP). 2) User Datagram Protocol (UDP). 3) Port
numbers from 1 to 65,535.
What ports are used by HTTP and TFTP? - Correct Answers -Port 80 and UDP port 69,
respectively.
What information can be found in the ARP cache? - Correct Answers -The presently
known table of MAC addresses that match up to IP addresses in that network.
When a host sends an ARP request, what information do they already have? - Correct
Answers -The IP address of the host that they want to communicate with, and they are
asking for the MAC address.
What does the arp-a command do? - Correct Answers -Brings up the ARP table on that
device.
What is at Layer 5 of the TCP/IP model, the Application layer? - Correct Answers -1)
How software communicates with lower-level protocols, such as how a web browser
uses HTTP to pull information from a web server.
, What is data called at levels 2, 3, and 4 of the TCP/IP model? - Correct Answers -At
Layer 4, the Transport layer, it is a segment. At layer 3, the Network layer, it is a packet.
At layer 2, the Data Link layer, it is a frame.
How does the TCP/IP model Application layer compare to the OSI model Application
layer? - Correct Answers -In the OSI model, the top 3 layers are the Session,
Presentation, and Application layers. In the TCP/IP model, all 3 of those layers are
combined into the Application layer.
Name 4 things that are defined by Ethernet standards. - Correct Answers -Protocols,
Interfaces, Cabling types, and Connectors.
In order to connect separate LAN's to each other, what do routers connect to? - Correct
Answers -WAN, or Wide Area Networks, such as the Internet, leased lines, etc.
Do wireless access points, or AP's, perform routing functions? - Correct Answers -True
AP's that are just AP's will not. However, many SOHO routers are an AP combined with
a switch, a router, and various other capabilities.
How are small wireless networks managed vs. large wireless networks? - Correct
Answers -Small networks can be individually configured and monitored. Large wireless
networks will include 10's or 100's of AP's, a Wireless LAN Controller, or WLC, and the
network is centrally managed and monitored.
Name 5 functions or features of a Next Generation Firewall, or NGFW. - Correct
Answers -1) Unified Threat Management, or UTM. 2) A standard firewall. 3) Web
filtering. 4) Inline file scanning. 5) Intrusion Prevention System, or IPS.
Name 3 reasons to use a Next Generation Firewall. - Correct Answers -Prevent
breaches, Identify compromised machines, and Receive alerts.
What is Cisco's DNA center? - Correct Answers -A single interface that can be used to
manage a network, deploy workflows on a network, and automate provisioning and
change management throughout a network.
Describe a Tier 2 network design. - Correct Answers -There are 2 layers of switches.
Access switches that aggregate user machines are close to the network endpoints.
Access switches are in turn connected to Distribution switches that aggregate the
Access switch traffic.
What are Tier 2 networks sometimes called? - Correct Answers -A Collapsed core
design, referring to the Distribution layer switches that are the core of the network.
Describe a Tier 3 network design. - Correct Answers -There are 3 layers of switches.
Access switches that aggregate user machines are close to the network endpoints.
Access switches are in turn connected to Distribution switches that aggregate the
EXAM WITH CORRECT ANSWERS
What is the number and name of the layers of the modern TCP/IP model? - Correct
Answers -There are 5 layers - Physical, Data Link, Network, Transport, and Application.
What is at Layer 1 of the TCP/IP model, the Physical layer? - Correct Answers -Physical
cables and connectors, and anything related to light or electricity traveling over cables.
What is at Layer 2 of the TCP/IP model, the Data Link layer? - Correct Answers -MAC
addresses with data structured into frames. The frames include the source and
destination MAC addresses in the header.
What is at Layer 3 of the TCP/IP model, the Network layer? - Correct Answers -Logical
addressing, such as IPv4 and IPv6 addresses that are globally unique and sent through
routers to reach their destinations.
What is at Layer 4 of the TCP/IP model, the Transport layer? - Correct Answers -1)
Transmission Control Protocol (TCP). 2) User Datagram Protocol (UDP). 3) Port
numbers from 1 to 65,535.
What ports are used by HTTP and TFTP? - Correct Answers -Port 80 and UDP port 69,
respectively.
What information can be found in the ARP cache? - Correct Answers -The presently
known table of MAC addresses that match up to IP addresses in that network.
When a host sends an ARP request, what information do they already have? - Correct
Answers -The IP address of the host that they want to communicate with, and they are
asking for the MAC address.
What does the arp-a command do? - Correct Answers -Brings up the ARP table on that
device.
What is at Layer 5 of the TCP/IP model, the Application layer? - Correct Answers -1)
How software communicates with lower-level protocols, such as how a web browser
uses HTTP to pull information from a web server.
, What is data called at levels 2, 3, and 4 of the TCP/IP model? - Correct Answers -At
Layer 4, the Transport layer, it is a segment. At layer 3, the Network layer, it is a packet.
At layer 2, the Data Link layer, it is a frame.
How does the TCP/IP model Application layer compare to the OSI model Application
layer? - Correct Answers -In the OSI model, the top 3 layers are the Session,
Presentation, and Application layers. In the TCP/IP model, all 3 of those layers are
combined into the Application layer.
Name 4 things that are defined by Ethernet standards. - Correct Answers -Protocols,
Interfaces, Cabling types, and Connectors.
In order to connect separate LAN's to each other, what do routers connect to? - Correct
Answers -WAN, or Wide Area Networks, such as the Internet, leased lines, etc.
Do wireless access points, or AP's, perform routing functions? - Correct Answers -True
AP's that are just AP's will not. However, many SOHO routers are an AP combined with
a switch, a router, and various other capabilities.
How are small wireless networks managed vs. large wireless networks? - Correct
Answers -Small networks can be individually configured and monitored. Large wireless
networks will include 10's or 100's of AP's, a Wireless LAN Controller, or WLC, and the
network is centrally managed and monitored.
Name 5 functions or features of a Next Generation Firewall, or NGFW. - Correct
Answers -1) Unified Threat Management, or UTM. 2) A standard firewall. 3) Web
filtering. 4) Inline file scanning. 5) Intrusion Prevention System, or IPS.
Name 3 reasons to use a Next Generation Firewall. - Correct Answers -Prevent
breaches, Identify compromised machines, and Receive alerts.
What is Cisco's DNA center? - Correct Answers -A single interface that can be used to
manage a network, deploy workflows on a network, and automate provisioning and
change management throughout a network.
Describe a Tier 2 network design. - Correct Answers -There are 2 layers of switches.
Access switches that aggregate user machines are close to the network endpoints.
Access switches are in turn connected to Distribution switches that aggregate the
Access switch traffic.
What are Tier 2 networks sometimes called? - Correct Answers -A Collapsed core
design, referring to the Distribution layer switches that are the core of the network.
Describe a Tier 3 network design. - Correct Answers -There are 3 layers of switches.
Access switches that aggregate user machines are close to the network endpoints.
Access switches are in turn connected to Distribution switches that aggregate the
