CCNA 1: Introduction to Networks Final Exam

CCNA 1 – Introduction to Networks (Version 7.00) – ITNv7

Networking Fundamentals

• Real-Time Transport Protocol (RTP) is used for two types of traffic
• Wireless technology with low-power and data rate requirements is popular in home automation applications
• The Network layer of the TCP/IP model provides a route to forward messages through an internetwork
• DNS relies on record types such as A, NS, AAAA, and MX to provide services

Network Protocols

• Proprietary protocols are not open standards
• DNS provides a service that translates domain names to IP addresses
• Port 110 is used for POP3 email service

Networking Commands

• The ipconfig command can be used on a Windows PC to see the IP configuration of that computer

Networking Models

• A wired laser printer attached to a home computer and shared with other computers on the home network uses the client-server model

Network Security

• A characteristic of a virus is that it replicates itself
• QoS prioritizes traffic in the order of real-time audio, financial transactions, and web browsing

IPv6 Addressing

• The IPv6 address components include global unicast, link-local, site-local, and multicast addresses

Network Communication

• The application, transport, and network layers of the TCP/IP model are used for file transfer
• The default gateway setting of a host should be the IP address of the router interface connected to the host

Network Services

• Internet Messenger provides real-time communication services
• HTTP uses TCP port 80, and HTTPS uses TCP port 443 for secure communication

Network Design

• The IP address and prefix that satisfies the usable host addressing requirements for each network
• OSPF is a routing protocol responsible for building routing tables

Network Troubleshooting

• Electromagnetic interference (EMI) and radio-frequency interference (RFI) can interfere with copper cabling and result in signal distortion and data corruption
• A host obtains a destination MAC address by sending an ARP request

Network Applications

• A client uses a DNS query to obtain a destination IP address
• A PC uses port numbers to keep track of multiple application sessions and receive correct packet flows

Network Security Threats

• A characteristic of a Trojan horse is that it is a malicious program disguised as legitimate software
• HTTPS provides secure web communication using SSL/TLS