CCNA JEREMY | COMPLETE PRACTICE QUESTIONS, ANSWERS & STUDY
GUIDE 2026/2027
A computer network is a digital telecommunications network which allows [...] to share resources. - ANS
✔✔nodes
[...] and [...] are also known as 'end hosts' or 'endpoints'. - ANS ✔✔Servers / clients
What does this symbol represent? - ANS ✔✔Router
What does this symbol represent? - ANS ✔✔Switch
What does this symbol represent? - ANS ✔✔Client
What does this symbol represent? - ANS ✔✔Server
What does this symbol represent? - ANS ✔✔Firewall
A [...] is a device that accesses a service made available by a server. - ANS ✔✔client
A [...] is a device that provides functions or services for clients. - ANS ✔✔server
Can a single device be both a client and a server? - ANS ✔✔Yes
What does LAN stand for? - ANS ✔✔Local Area Network
A [...] provides connectivity to hosts within the same LAN. - ANS ✔✔switch
A [...] has many network interfaces for end hosts to connect to. - ANS ✔✔switch
What kind of network device is a Cisco 'Catalyst'? - ANS ✔✔Switch
What kind of network device is a Cisco ISR? - ANS ✔✔Router
Routers have [...] network interfaces than switches. - ANS ✔✔fewer
A [...] is used to send data over the Internet. - ANS ✔✔router
A [...] monitors and controls network traffic based on configured rules. - ANS ✔✔firewall
[...] firewalls are software applications that filter traffic entering and exiting a host machine, like a PC. -
ANS ✔✔Host-based
What kind of network device is a Cisco ASA? - ANS ✔✔Firewall
,What kind of network device is a Cisco Firepower? - ANS ✔✔Firewall
A firewall which combines a traditional firewall with more advanced filtering functionalities is known as a
'[...] firewall'. - ANS ✔✔next-generation
What is the name of the connector on the end of an Ethernet UTP cable? - ANS ✔✔RJ45
How many pins are in an RJ45 connector? - ANS ✔✔8
How many bits are in 1 byte? - ANS ✔✔8
Network speeds are measured in [...] per second. - ANS ✔✔bits
How many bits are in 1 kilobit? - ANS ✔✔1,000 (one thousand)
How many bits are in 1 megabit? - ANS ✔✔1,000,000 (1 million)
How many bits are in 1 gigabit? - ANS ✔✔1,000,000,000 (1 billion)
How many bits are in 1 terabit? - ANS ✔✔1,000,000,000,000 (1 trillion)
Ethernet was originally defined in the IEEE [...] standard in 1983. - ANS ✔✔802.3
What is the maximum length of an Ethernet UTP cable? - ANS ✔✔100 meters
What is the speed of an 'Ethernet' connection? - ANS ✔✔10 Mbps
What is the speed of a 'FastEthernet' connection? - ANS ✔✔100 Mbps
What is the speed of a 'Gigabit Ethernet' connection? - ANS ✔✔1 Gbps
What is the speed of a '10 Gig Ethernet' connection? - ANS ✔✔10 Gbps
IEEE standard [...] = 10 Mbps Ethernet (10BASE-T) - ANS ✔✔802.3i
IEEE standard [...] = 100 Mbps Ethernet (100BASE-T) - ANS ✔✔802.3u
IEEE standard [...] = 1 Gbps Ethernet (1000BASE-T) - ANS ✔✔802.3ab
IEEE standard [...] = 10 Gbps Ethernet (10GBASE-T) - ANS ✔✔802.3an
What does UTP stand for? - ANS ✔✔Unshielded Twisted Pair
Why are the wire pairs in a UTP cable twisted together? - ANS ✔✔It protects against EMI
(Electromagnetic Interference)
How many pairs of wires are used in a 10BASE-T cable? - ANS ✔✔2 (=4 wires)
, How many pairs of wires are used in a 100BASE-T cable? - ANS ✔✔2 (=4 wires)
How many pairs of wires are used in a 1000BASE-T cable? - ANS ✔✔4 (=8 wires)
How many pairs of wires are used in a 10GBASE-T cable? - ANS ✔✔4 (=8 wires)
A [...] connection allows both devices to send and receive data at the same time. - ANS ✔✔full-duplex
In a FastEthernet connection, a router transmits data on which pins [...] - ANS ✔✔1 and 2
In a FastEthernet connection, a router receives data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a firewall transmits data on which pins [...] - ANS ✔✔1 and 2
In a FastEthernet connection, a firewall receives data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a PC transmits data on which pins [...] - ANS ✔✔1 and 2
In a FastEthernet connection, a PC receives data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a switch transmits data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a switch receives data on which pins [...] - ANS ✔✔1 and 2
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect a router and a switch? - ANS
✔✔straight-through cable
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect a PC and a switch? - ANS
✔✔straight-through cable
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect two routers together? - ANS
✔✔crossover cable
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect two switches together? -
ANS ✔✔crossover cable
What kind of cable connects a pin pair on one end of a UTP cable to the same pair on the other end? -
ANS ✔✔straight-through cable
What kind of cable connects a pin pair on one end of a UTP cable to the opposite pair on the other end?
- ANS ✔✔crossover cable
What is the name of the feature that allows a device to automatically adjust which RJ45 pin pairs it uses
to transmit and receive data? - ANS ✔✔Auto MDI-X
Which two pin pairs are used in a 10BASE-T or 100BASE-T connection? - ANS ✔✔Pair 1-2, Pair3-6
GUIDE 2026/2027
A computer network is a digital telecommunications network which allows [...] to share resources. - ANS
✔✔nodes
[...] and [...] are also known as 'end hosts' or 'endpoints'. - ANS ✔✔Servers / clients
What does this symbol represent? - ANS ✔✔Router
What does this symbol represent? - ANS ✔✔Switch
What does this symbol represent? - ANS ✔✔Client
What does this symbol represent? - ANS ✔✔Server
What does this symbol represent? - ANS ✔✔Firewall
A [...] is a device that accesses a service made available by a server. - ANS ✔✔client
A [...] is a device that provides functions or services for clients. - ANS ✔✔server
Can a single device be both a client and a server? - ANS ✔✔Yes
What does LAN stand for? - ANS ✔✔Local Area Network
A [...] provides connectivity to hosts within the same LAN. - ANS ✔✔switch
A [...] has many network interfaces for end hosts to connect to. - ANS ✔✔switch
What kind of network device is a Cisco 'Catalyst'? - ANS ✔✔Switch
What kind of network device is a Cisco ISR? - ANS ✔✔Router
Routers have [...] network interfaces than switches. - ANS ✔✔fewer
A [...] is used to send data over the Internet. - ANS ✔✔router
A [...] monitors and controls network traffic based on configured rules. - ANS ✔✔firewall
[...] firewalls are software applications that filter traffic entering and exiting a host machine, like a PC. -
ANS ✔✔Host-based
What kind of network device is a Cisco ASA? - ANS ✔✔Firewall
,What kind of network device is a Cisco Firepower? - ANS ✔✔Firewall
A firewall which combines a traditional firewall with more advanced filtering functionalities is known as a
'[...] firewall'. - ANS ✔✔next-generation
What is the name of the connector on the end of an Ethernet UTP cable? - ANS ✔✔RJ45
How many pins are in an RJ45 connector? - ANS ✔✔8
How many bits are in 1 byte? - ANS ✔✔8
Network speeds are measured in [...] per second. - ANS ✔✔bits
How many bits are in 1 kilobit? - ANS ✔✔1,000 (one thousand)
How many bits are in 1 megabit? - ANS ✔✔1,000,000 (1 million)
How many bits are in 1 gigabit? - ANS ✔✔1,000,000,000 (1 billion)
How many bits are in 1 terabit? - ANS ✔✔1,000,000,000,000 (1 trillion)
Ethernet was originally defined in the IEEE [...] standard in 1983. - ANS ✔✔802.3
What is the maximum length of an Ethernet UTP cable? - ANS ✔✔100 meters
What is the speed of an 'Ethernet' connection? - ANS ✔✔10 Mbps
What is the speed of a 'FastEthernet' connection? - ANS ✔✔100 Mbps
What is the speed of a 'Gigabit Ethernet' connection? - ANS ✔✔1 Gbps
What is the speed of a '10 Gig Ethernet' connection? - ANS ✔✔10 Gbps
IEEE standard [...] = 10 Mbps Ethernet (10BASE-T) - ANS ✔✔802.3i
IEEE standard [...] = 100 Mbps Ethernet (100BASE-T) - ANS ✔✔802.3u
IEEE standard [...] = 1 Gbps Ethernet (1000BASE-T) - ANS ✔✔802.3ab
IEEE standard [...] = 10 Gbps Ethernet (10GBASE-T) - ANS ✔✔802.3an
What does UTP stand for? - ANS ✔✔Unshielded Twisted Pair
Why are the wire pairs in a UTP cable twisted together? - ANS ✔✔It protects against EMI
(Electromagnetic Interference)
How many pairs of wires are used in a 10BASE-T cable? - ANS ✔✔2 (=4 wires)
, How many pairs of wires are used in a 100BASE-T cable? - ANS ✔✔2 (=4 wires)
How many pairs of wires are used in a 1000BASE-T cable? - ANS ✔✔4 (=8 wires)
How many pairs of wires are used in a 10GBASE-T cable? - ANS ✔✔4 (=8 wires)
A [...] connection allows both devices to send and receive data at the same time. - ANS ✔✔full-duplex
In a FastEthernet connection, a router transmits data on which pins [...] - ANS ✔✔1 and 2
In a FastEthernet connection, a router receives data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a firewall transmits data on which pins [...] - ANS ✔✔1 and 2
In a FastEthernet connection, a firewall receives data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a PC transmits data on which pins [...] - ANS ✔✔1 and 2
In a FastEthernet connection, a PC receives data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a switch transmits data on which pins [...] - ANS ✔✔3 and 6
In a FastEthernet connection, a switch receives data on which pins [...] - ANS ✔✔1 and 2
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect a router and a switch? - ANS
✔✔straight-through cable
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect a PC and a switch? - ANS
✔✔straight-through cable
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect two routers together? - ANS
✔✔crossover cable
If Auto MDI-X is disabled, what kind of UTP cable should be used to connect two switches together? -
ANS ✔✔crossover cable
What kind of cable connects a pin pair on one end of a UTP cable to the same pair on the other end? -
ANS ✔✔straight-through cable
What kind of cable connects a pin pair on one end of a UTP cable to the opposite pair on the other end?
- ANS ✔✔crossover cable
What is the name of the feature that allows a device to automatically adjust which RJ45 pin pairs it uses
to transmit and receive data? - ANS ✔✔Auto MDI-X
Which two pin pairs are used in a 10BASE-T or 100BASE-T connection? - ANS ✔✔Pair 1-2, Pair3-6
