CISCO CCNA – PRACTICE QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
Network Fundamentals
Network Access
IP Connectivity
IP Services
Security Fundamentals
Automation and Programmability
Introduction
The purpose of this assessment is to provide a comprehensive evaluation of the
candidate's proficiency in modern networking technologies. This exam measures the
essential skills and knowledge required to install, operate, and configure a secure
enterprise network. The structure consists of multiple-choice and complex scenario-
based questions that mirror the rigor of official certification environments. There is a
heavy emphasis on real-world application, critical decision-making, and
troubleshooting within multi-vendor environments. Candidates are expected to
,demonstrate mastery over IP connectivity, security protocols, and the increasing role
of network automation and software-defined architectures in the contemporary
professional landscape.
SECTION ONE: QUESTIONS 1–100
1. A network administrator needs to verify the path a packet takes from a local host
to a remote server. Which command provides the specific IP address of each
hop along the way?
A. ping
B. show ip route
🟢 C. traceroute
D. nslookup
🔴 RATIONALE: Traceroute uses TTL increments to identify each intermediate router
(hop) along a path to a destination, whereas ping only verifies end-to-end
connectivity.
2. Which layer of the OSI model is responsible for end-to-end communication,
segmentation, and flow control?
,A. Layer 2
B. Layer 3
🟢 C. Layer 4
D. Layer 7
🔴 RATIONALE: The Transport Layer (Layer 4) manages end-to-end communication,
including reliability through windowing, sequencing, and flow control using TCP or
UDP.
3. An engineer is configuring a switchport to connect to a desktop computer.
Which command should be applied to ensure the port transitions immediately to
the forwarding state?
🟢 A. spanning-tree portfast
B. spanning-tree mode rapid-pvst
C. switchport mode access
D. spanning-tree bpduguard enable
🔴 RATIONALE: PortFast allows an access port to bypass the listening and learning
states of STP, moving immediately to forwarding to prevent timeouts for end-user
devices.
, 4. What is the primary difference between a Hub and a Switch?
A. Hubs operate at Layer 3; Switches operate at Layer 2.
B. Switches broadcast all traffic; Hubs use MAC tables.
🟢 C. Hubs exist in a single collision domain; Switches provide separate collision
domains per port.
D. Hubs support full-duplex communication by default.
🔴 RATIONALE: Hubs are physical layer devices that repeat signals to all ports,
creating one large collision domain. Switches create independent collision domains
for every port.
5. Which IPv6 address type is used for communication within a single local link
and is not routable on the public internet?
A. Global Unicast
🟢 B. Link-Local
C. Unique Local
D. Multicast
🔴 RATIONALE: Link-local addresses (FE80::/10) are mandatory on IPv6 interfaces
and are used for communication between devices on the same local segment only.
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
Network Fundamentals
Network Access
IP Connectivity
IP Services
Security Fundamentals
Automation and Programmability
Introduction
The purpose of this assessment is to provide a comprehensive evaluation of the
candidate's proficiency in modern networking technologies. This exam measures the
essential skills and knowledge required to install, operate, and configure a secure
enterprise network. The structure consists of multiple-choice and complex scenario-
based questions that mirror the rigor of official certification environments. There is a
heavy emphasis on real-world application, critical decision-making, and
troubleshooting within multi-vendor environments. Candidates are expected to
,demonstrate mastery over IP connectivity, security protocols, and the increasing role
of network automation and software-defined architectures in the contemporary
professional landscape.
SECTION ONE: QUESTIONS 1–100
1. A network administrator needs to verify the path a packet takes from a local host
to a remote server. Which command provides the specific IP address of each
hop along the way?
A. ping
B. show ip route
🟢 C. traceroute
D. nslookup
🔴 RATIONALE: Traceroute uses TTL increments to identify each intermediate router
(hop) along a path to a destination, whereas ping only verifies end-to-end
connectivity.
2. Which layer of the OSI model is responsible for end-to-end communication,
segmentation, and flow control?
,A. Layer 2
B. Layer 3
🟢 C. Layer 4
D. Layer 7
🔴 RATIONALE: The Transport Layer (Layer 4) manages end-to-end communication,
including reliability through windowing, sequencing, and flow control using TCP or
UDP.
3. An engineer is configuring a switchport to connect to a desktop computer.
Which command should be applied to ensure the port transitions immediately to
the forwarding state?
🟢 A. spanning-tree portfast
B. spanning-tree mode rapid-pvst
C. switchport mode access
D. spanning-tree bpduguard enable
🔴 RATIONALE: PortFast allows an access port to bypass the listening and learning
states of STP, moving immediately to forwarding to prevent timeouts for end-user
devices.
, 4. What is the primary difference between a Hub and a Switch?
A. Hubs operate at Layer 3; Switches operate at Layer 2.
B. Switches broadcast all traffic; Hubs use MAC tables.
🟢 C. Hubs exist in a single collision domain; Switches provide separate collision
domains per port.
D. Hubs support full-duplex communication by default.
🔴 RATIONALE: Hubs are physical layer devices that repeat signals to all ports,
creating one large collision domain. Switches create independent collision domains
for every port.
5. Which IPv6 address type is used for communication within a single local link
and is not routable on the public internet?
A. Global Unicast
🟢 B. Link-Local
C. Unique Local
D. Multicast
🔴 RATIONALE: Link-local addresses (FE80::/10) are mandatory on IPv6 interfaces
and are used for communication between devices on the same local segment only.
