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CCNA 1 v7.02 & v8 (ITN) Modules 1 - 3: Basic Network Connectivity Exam Answers (Full Bank)

Updated: October 10, 2026 • Tip: Click any option (A, B, C, D) to check your answer instantly!

Complete question bank for CCNA 1 (ITN v7.02/v8) Modules 1 – 3: Basic Network Connectivity and Communications Exam.

📥 Download CCNA 1 v7.02 & v8 (ITN) Modules 1 - 3: Basic Network Connectivity Exam Answers (Full Bank) Packet Tracer (.PKA) & Verified PDF Guide

Includes complete Cisco NetAcad v7.02 / v8 topology file (.pka) and IOS CLI configuration script.

Verified Cisco NetAcad Exam Questions (15 Core Questions + Explanations)

Question 1 Which interface allows remote management of a Layer 2 switch?
  • A. The AUX interface
  • B. The console port interface
  • C. The switch virtual interface (SVI)
  • D. The first Ethernet port interface
✔ Correct Answer: C. The switch virtual interface (SVI)
Technical Explanation: A Layer 2 switch uses a Switch Virtual Interface (SVI), such as interface VLAN 1 or a dedicated management VLAN interface, assigned with an IPv4/IPv6 address to allow remote management over Telnet/SSH.
Question 2 What function does pressing the Tab key have when entering a command in IOS?
  • A. It aborts the current command and returns to configuration mode.
  • B. It exits configuration mode and returns to user EXEC mode.
  • C. It moves the cursor to the beginning of the next line.
  • D. It completes the remainder of a partially typed word in a command.
✔ Correct Answer: D. It completes the remainder of a partially typed word in a command.
Technical Explanation: Pressing the Tab key in the Cisco IOS CLI auto-completes a partially typed command keyword if enough characters have been typed to make it unique.
Question 3 While trying to solve a network issue, a technician made multiple changes to the current router configuration file. The changes did not solve the problem and were not saved. What action can the technician take to discard the changes and work with the file in NVRAM?
  • A. Issue the 'reload' command without saving the running configuration.
  • B. Delete the vlan.dat file and reboot the device.
  • C. Close and reopen the terminal emulation software.
  • D. Issue the 'copy startup-config running-config' command.
✔ Correct Answer: A. Issue the 'reload' command without saving the running configuration.
Technical Explanation: Issuing 'copy startup-config running-config' merges the two configs rather than overwriting. To completely discard unsaved changes in RAM and load the clean configuration from NVRAM, issue the 'reload' command and decline saving changes.
Question 4 Which two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.)
  • A. Video
  • B. Web
  • C. File transfer
  • D. Voice
  • E. Peer-to-peer
✔ Correct Answer: A. Video & D. Voice
Technical Explanation: RTP operates over UDP to carry latency-sensitive streaming media such as Voice over IP (VoIP) and video teleconferencing.
Question 5 Which layer of the TCP/IP model provides a route to forward messages through an internetwork?
  • A. Application
  • B. Network Access
  • C. Internet
  • D. Transport
✔ Correct Answer: C. Internet
Technical Explanation: The TCP/IP Internet layer corresponds to the OSI Network layer (Layer 3) and handles logical IP addressing and packet routing across networks.
Question 6 What is a characteristic of fault-tolerant networks?
  • A. They protect data from unauthorized access.
  • B. They have redundant links that rapidly reroute traffic if a primary path fails.
  • C. They can expand quickly to support new users without degrading performance.
  • D. They prioritize voice traffic over web traffic.
✔ Correct Answer: B. They have redundant links that rapidly reroute traffic if a primary path fails.
Technical Explanation: Fault tolerance relies on redundant hardware and alternate paths in a packet-switched network so that a single point of failure does not interrupt communications.
Question 7 Which command encrypts all plaintext passwords in the running-config file on a Cisco router or switch?
  • A. enable secret
  • B. service password-encryption
  • C. security passwords min-length 10
  • D. crypto key generate rsa
✔ Correct Answer: B. service password-encryption
Technical Explanation: The 'service password-encryption' global configuration command applies weak Type 7 obfuscation to all unencrypted passwords (console, VTY, aux) in the configuration output.
Question 8 What is the Protocol Data Unit (PDU) associated with the Data Link layer (Layer 2) of the OSI model?
  • A. Segment
  • B. Packet
  • C. Frame
  • D. Bits
✔ Correct Answer: C. Frame
Technical Explanation: OSI PDUs from Layer 4 down to Layer 1 are: Segment/Datagram (Layer 4 - Transport), Packet (Layer 3 - Network), Frame (Layer 2 - Data Link), and Bits (Layer 1 - Physical).
Question 9 Which type of network topology lets an administrator see the actual physical location of intermediary devices and cable installations?
  • A. Logical topology
  • B. Physical topology
  • C. Subnet topology
  • D. VLAN topology
✔ Correct Answer: B. Physical topology
Technical Explanation: A physical topology diagram illustrates the physical placement of racks, cabling, rooms, and ports, whereas a logical topology shows IP schemes, VLANs, and routing boundaries.
Question 10 Why would a Layer 2 switch need an IP address configured on an SVI?
  • A. To enable the switch to route packets between different VLANs.
  • B. To enable the switch to be managed remotely via SSH or Telnet.
  • C. To allow connected PCs to use the switch as their default gateway.
  • D. To enable the switch to build its MAC address table.
✔ Correct Answer: B. To enable the switch to be managed remotely via SSH or Telnet.
Technical Explanation: A Layer 2 switch switches frames based solely on MAC addresses, so its IP address is strictly for remote management access (SSH, Telnet, SNMP, HTTP).
Question 11 What command is used to verify the condition of the switch interfaces, including the status of the interfaces and a configured IP address?
  • A. ipconfig
  • B. ping
  • C. traceroute
  • D. show ip interface brief
✔ Correct Answer: D. show ip interface brief
Technical Explanation: 'show ip interface brief' provides a concise summary of all router/switch interfaces, their assigned IPv4 addresses, Layer 1 Status, and Layer 2 Protocol state.
Question 12 Which access method would be most appropriate if you are in the equipment room with a new switch that needs to be configured for the first time?
  • A. Console
  • B. Telnet
  • C. SSH
  • D. AUX
✔ Correct Answer: A. Console
Technical Explanation: Out-of-band serial or USB console access is required for initial configuration of a brand-new switch that has no IP address or active network interfaces.
Question 13 What happens when part of an Internet transmission is not delivered to the destination in a TCP-based communication?
  • A. The entire message is dropped and the connection is reset.
  • B. The source is notified via ICMP and stops sending.
  • C. Only the missing TCP segments are retransmitted by the source.
  • D. The destination reconstructs the missing bytes using FCS.
✔ Correct Answer: C. Only the missing TCP segments are retransmitted by the source.
Technical Explanation: TCP uses sequence numbers and acknowledgments (ACKs) to track segment delivery and reliably retransmit only lost segments.
Question 14 Which organization is responsible for overseeing the allocation of IPv4 and IPv6 addresses and managing DNS root zones globally?
  • A. IEEE
  • B. IANA / ICANN
  • C. EIA/TIA
  • D. ITU-T
✔ Correct Answer: B. IANA / ICANN
Technical Explanation: IANA (operated by ICANN) coordinates global IP address allocation to Regional Internet Registries (RIRs), protocol parameters, and DNS root zone management.
Question 15 A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? (Choose two.)
  • A. Installing a wireless network
  • B. Implementing a firewall and antivirus software
  • C. Adding a dedicated intrusion prevention device
  • D. Switching to fiber-optic cabling
  • E. Disabling DHCP
✔ Correct Answer: B. Implementing a firewall and antivirus software
Technical Explanation: For a SOHO/small office environment, host-based antivirus/antimalware software combined with a stateful network firewall provides essential baseline security.

Modules 1-3 Cisco IOS Switch & SVI Initial Configuration

Cisco IOS CLI - Verification & Lab Script 
Switch> enable
Switch# configure terminal
Switch(config)# hostname S1
S1(config)# enable secret class
S1(config)# service password-encryption
S1(config)# interface vlan 1
S1(config-if)# ip address 192.168.1.2 255.255.255.0
S1(config-if)# no shutdown

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