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Cisco CCNA (200-301) - 100 Questions

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Prepare for the Cisco Certified Network Associate (CCNA 200-301) exam with 100 practice questions covering all 6 official exam topics. This question bank validates foundational and intermediate networking knowledge required for a career in network engineering and administration. Topics include network fundamentals, network access (VLANs, EtherChannel), IP connectivity (OSPF, routing protocols), IP services (DHCP, DNS, NAT), security fundamentals, and network automation and programmability. CCNA is one of the most recognized networking certifications globally, serving as the foundation for advanced Cisco certifications such as CCNP and CCIE.

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1. A network engineer is explaining the OSI model to a junior colleague. The colleague asks which OSI layer is responsible for end-to-end error recovery and flow control between hosts. Which layer should the engineer identify?

A Layer 2 (Data Link)
B Layer 3 (Network)
C Layer 4 (Transport)
D Layer 5 (Session)

2. A network technician is analyzing a captured Ethernet II frame and identifies the following fields: Preamble, Destination MAC, Source MAC, Type, Data, and FCS. The technician asks which field is used to identify the Layer 3 protocol encapsulated inside the frame. Which field should be identified?

A Preamble
B EtherType (Type) field
C Source MAC address
D FCS (Frame Check Sequence)

3. A network engineer must subnet the 192.168.10.0/24 network to support at least 50 hosts per subnet while wasting as few addresses as possible. Which subnet mask should the engineer use?

A /24 (255.255.255.0)
B /27 (255.255.255.224)
C /26 (255.255.255.192)
D /25 (255.255.255.128)

4. A Cisco switch port is connected to a shared hub. The hub has five workstations attached to it. A network engineer must determine the number of collision domains and broadcast domains created by this topology. Which answer is correct?

A 5 collision domains, 1 broadcast domain
B 1 collision domain, 1 broadcast domain
C 5 collision domains, 5 broadcast domains
D 1 collision domain, 5 broadcast domains

5. A network engineer configuring a legacy 10BASE-T Ethernet segment notes that the connected devices experience frequent collisions. The engineer explains to the team how CSMA/CD handles this situation. Which of the following BEST describes the CSMA/CD collision recovery process?

A A jamming signal is sent, both stations wait a random backoff time, then retry transmission
B A token is passed to the next station to prevent further collisions
C Both stations stop and wait a fixed 9.6-microsecond time before retrying
D The frame is forwarded to a central collision controller for retransmission

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Information

Questions 100
Time 2h
Difficulty Medium
Minimum Score 82.50%
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