CCNA Exam Questions and Answers 2017 – A Comprehensive Study Guide

CCNA Exam Questions and Answers 2017 – A Comprehensive Study Guide

Are you preparing for the CCNA certification exam? Look no further! In this blog post, we provide you with a comprehensive study guide consisting of CCNA exam questions and answers from the year 2017. This guide will help you assess your knowledge and prepare yourself for the exam effectively.

Section 1: Network Fundamentals

Q1: Which layer of the OSI model is responsible for logical addressing?
A1: Network Layer (Layer 3)

Q2: What are the three primary functions of the transport layer?
A2: Segmentation, reassembly, and flow control.

Q3: What is the purpose of ARP (Address Resolution Protocol)?
A3: ARP is used to resolve an IP address to a physical MAC address.

Section 2: LAN Switching Technologies

Q4: What is the maximum number of VLANs supported on a Cisco Catalyst 2960 switch?
A4: 4096 VLANs

Q5: How does a switch handle frames with unknown destination MAC addresses?
A5: It floods the frame out of all ports except the one it was received on.

Q6: What is the purpose of the VTP (VLAN Trunking Protocol)?
A6: VTP allows for the automatic propagation of VLAN information across a switched network.

Section 3: Routing Technologies

Q7: What is the administrative distance of OSPF (Open Shortest Path First) protocol?
A7: 110

Q8: What is the purpose of the “router-on-a-stick” configuration?
A8: It allows a router to perform inter-VLAN routing by using subinterfaces on a single physical interface.

Q9: What is the primary difference between static routing and dynamic routing?
A9: Static routing requires manual configuration, while dynamic routing protocols dynamically learn and advertise routes.

Section 4: WAN Technologies

Q10: What is the purpose of a CSU/DSU (Channel Service Unit/Data Service Unit)?
A10: A CSU/DSU is used to connect a router to a digital circuit, such as a T1 or T3 line.

Q11: What is HDLC (High-Level Data Link Control) and where is it commonly used?
A11: HDLC is a synchronous serial data link protocol used to connect routers to leased lines.

Q12: What are the three encapsulation methods used in PPP (Point-to-Point Protocol)?
A12: PPP can use HDLC, PPP over Ethernet (PPPoE), or Frame Relay encapsulation.

Section 5: Infrastructure Services

Q13: What is the purpose of DHCP (Dynamic Host Configuration Protocol)?
A13: DHCP is used to automatically assign IP addresses and other network configuration parameters to devices on a network.

Q14: What are the four main functions provided by DNS (Domain Name System)?
A14: Name resolution, host aliasing, zone transfers, and mail server aliasing.

Q15: What is NAT (Network Address Translation) and why is it used?
A15: NAT is used to translate private IP addresses to public IP addresses, allowing devices on a private network to access the internet.

These are just a few examples of the CCNA exam questions and answers you may encounter. We highly recommend studying the topics extensively and practicing with a variety of questions.

Good luck with your CCNA exam preparation!

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