Cisco Networking Practice Exam 2026 Edition
Comprehensive Review for CCNA and
Networking Fundamentals
1. Which protocol is used to securely connect to a remote device
over the network?
A) Telnet
B) SSH
C) FTP
D) HTTP
Rationale: SSH provides encrypted and secure remote access, unlike
Telnet which transmits data in plaintext.
2. What is the purpose of a VLAN in a network?
A) Increase bandwidth
B) Segment a network logically
C) Replace routers
D) Provide wireless connectivity
Rationale: VLANs allow logical segmentation of a network into
separate broadcast domains without requiring physical separation.
3. Which layer of the OSI model is responsible for reliable end-to-
end delivery?
A) Network
B) Data Link
, C) Transport
D) Application
Rationale: The Transport layer (TCP/UDP) ensures end-to-end
communication, with TCP providing reliability.
4. What is the default administrative distance of OSPF?
A) 90
B) 100
C) 110
D) 120
Rationale: OSPF uses an administrative distance of 110, which helps
routers select the best routing protocol when multiple protocols are
configured.
5. Which IP address class is 192.168.1.1?
A) Class A
B) Class B
C) Class C
D) Class D
Rationale: Class C IP addresses range from 192.0.0.0 to
223.255.255.255.
6. What command verifies the routing table on a Cisco router?
A) show interfaces
B) show ip route
C) ping
D) traceroute
, Rationale: The show ip route command displays the routing table with
learned and connected routes.
7. Which protocol resolves IP addresses to MAC addresses?
A) TCP
B) ARP
C) ICMP
D) DNS
Rationale: ARP (Address Resolution Protocol) translates IP addresses
into physical MAC addresses for local delivery.
8. Which type of IPv6 address is FF02::1?
A) Unicast
B) Anycast
C) Multicast
D) Broadcast
Rationale: FF02::1 is a multicast address targeting all nodes on the
local link.
9. Which device operates at Layer 2 of the OSI model?
A) Router
B) Switch
C) Firewall
D) Hub
Rationale: Switches forward frames based on MAC addresses at Layer
2, while routers operate at Layer 3.
10. Which protocol is used to automatically assign IP addresses
to hosts?
Comprehensive Review for CCNA and
Networking Fundamentals
1. Which protocol is used to securely connect to a remote device
over the network?
A) Telnet
B) SSH
C) FTP
D) HTTP
Rationale: SSH provides encrypted and secure remote access, unlike
Telnet which transmits data in plaintext.
2. What is the purpose of a VLAN in a network?
A) Increase bandwidth
B) Segment a network logically
C) Replace routers
D) Provide wireless connectivity
Rationale: VLANs allow logical segmentation of a network into
separate broadcast domains without requiring physical separation.
3. Which layer of the OSI model is responsible for reliable end-to-
end delivery?
A) Network
B) Data Link
, C) Transport
D) Application
Rationale: The Transport layer (TCP/UDP) ensures end-to-end
communication, with TCP providing reliability.
4. What is the default administrative distance of OSPF?
A) 90
B) 100
C) 110
D) 120
Rationale: OSPF uses an administrative distance of 110, which helps
routers select the best routing protocol when multiple protocols are
configured.
5. Which IP address class is 192.168.1.1?
A) Class A
B) Class B
C) Class C
D) Class D
Rationale: Class C IP addresses range from 192.0.0.0 to
223.255.255.255.
6. What command verifies the routing table on a Cisco router?
A) show interfaces
B) show ip route
C) ping
D) traceroute
, Rationale: The show ip route command displays the routing table with
learned and connected routes.
7. Which protocol resolves IP addresses to MAC addresses?
A) TCP
B) ARP
C) ICMP
D) DNS
Rationale: ARP (Address Resolution Protocol) translates IP addresses
into physical MAC addresses for local delivery.
8. Which type of IPv6 address is FF02::1?
A) Unicast
B) Anycast
C) Multicast
D) Broadcast
Rationale: FF02::1 is a multicast address targeting all nodes on the
local link.
9. Which device operates at Layer 2 of the OSI model?
A) Router
B) Switch
C) Firewall
D) Hub
Rationale: Switches forward frames based on MAC addresses at Layer
2, while routers operate at Layer 3.
10. Which protocol is used to automatically assign IP addresses
to hosts?
