CCNA1 v7 - ITN - Modules 1 - 3: Basic Network Connectivity and Communications Exam Answers

What three application layer protocols are part of the TCP/IP protocol suite?

DHCP, DNS, FTP

Fault tolerance

provide redundant links and devices

scalibility

expand the network without degrading the service for existing users

security

protect the network from unauthorized access

An employee at a branch office is creating a quote for a customer. In order to do this, the employee needs to access confidential pricing information from internal servers at the Head Office. What type of network would the employee access?

an intranet

Which statement describes the use of powerline networking technology?

A device connects to an existing home LAN using an adapter and an existing electrical outlet.

A networking technician is working on the wireless network at a medical clinic. The technician accidentally sets up the wireless network so that patients can see the medical records data of other patients. Which of the four network characteristics has been violated in this situation?

security

not suited for heavily wooded areas

satellite

uses coaxial cable as a medium

cable

typically has very low bandwidth

dialup telephone

high bandwidth connection that runs over telephone line

DSL

What two criteria are used to help select a network medium from various network media? (Choose two.)

the distance the selected medium can successfully carry a signal / the environment where the selected medium is to be installed

What type of network traffic requires QoS?

video conferencing

A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? (Choose two.)

implementing a firewall / installing antivirus software

Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)

privileged EXEC mode, VTY interface, console interface

Which interface allows remote management of a Layer 2 switch?

the switch virtual interface

What function does pressing the Tab key have when entering a command in IOS?

It completes the remainder of a partially typed word in a command.

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?

Issue the reload command without saving the running configuration.

An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?

to interrupt the ping proces

what password is used to access user EXEC mode?

line console 0 password

A technician configures a switch with these commands: SwitchA(config)# interface vlan 1

SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0

SwitchA(config-if)# no shutdown

SVI

Which command or key combination allows a user to return to the previous level in the command hierarchy?

exit

What are two characteristics of RAM on a Cisco device? (Choose two.)

The configuration that is actively running on the device is stored in RAM. / The contents of RAM are lost during a power cycle.

Which two host names follow the guidelines for naming conventions on Cisco IOS devices? (Choose two.)

RM-3-Switch-2A4 / SwBranch799

How is SSH different from Telnet?

SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and sends messages in plaintext.

An administrator is configuring a switch console port with a password. In what order will the administrator travel through the IOS modes of operation in order to reach the mode in which the configuration commands will be entered? (Not all options are used.)

User EXEC -> Privileged EXEC -> Global Config mode -> Line config mode -> Interface config mode

What are three characteristics of an SVI?

It is not associated with any physical interface on a switch. / It provides a means to remotely manage a switch. / It is associated with VLAN1 by default.

What command is used to verify the condition of the switch interfaces, including the status of the interfaces and a configured IP address?

show ip interface brief

In the show running-config command, which part of the syntax is represented by running-config?

a keyword

After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?

The new configuration will be loaded if the switch is restarted.

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

(config)# service password-encryption

A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?

This command prevents someone from viewing the running configuration passwords.

What method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?

flow control

Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?

Segments are sent from the transport layer to the internet layer.

Which name is assigned to the transport layer PDU?

segment

When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?

subnet mask

What process involves placing one PDU inside of another PDU?

encapsulation

What layer is responsible for routing messages through an internetwork in the TCP/IP model?

internet

For the TCP/IP protocol suite, what is the correct order of events when a Telnet message is being prepared to be sent over the network?

1. the Telnet-formatted data is provided to the next layer

2. the TCP header is added

3. the IP header is added

4. the Ethernet header is added

Which PDU format is used when bits are received from the network medium by the NIC of a host?

frame

Which method allows a computer to react accordingly when it requests data from a server and the server takes too long to respond?

response timeout

A web client is receiving a response for a web page from a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to decode the received transmission?

Ethernet, IP, TCP, HTTP

Which two OSI model layers have the same functionality as a single layer of the TCP/IP model?

data link / physical

At which layer of the OSI model would a logical address be added during encapsulation?

Network layer

What is a characteristic of multicast messages?

They are sent to a select group of hosts.

Which statement is correct about network protocols?

They define how messages are exchanged between the source and the destination

What is an advantage of network devices using open standard protocols?

A client host and a server running different operating systems can successfully exchange data.

Which device performs the function of determining the path that messages should take through internetworks?

a router

Why would a Layer 2 switch need an IP address?

to enable the switch to be managed remotely

What term describes storing personal files on servers over the internet to provide access anywhere, anytime, and on any device?

cloud

What term describes a network where one computer can be both client and server?

peer-to-peer

What term describes a type of network used by people who work from home or from a small remote office?

SOHO network

what term describes a computing model where server software runs on dedicated computers?

client/server

What term describes a technology that allows devices to connect to the LAN using an electrical outlet?

powerline networking

What term describes a policy that allows network devices to manage the flow of data to give priority to voice and video?

quality of service

What term describes a private collection of LANs and WANs that belongs to an organization?

intranet

What term describes the ability to use personal devices across a business or campus network?

BYOD

At which OSI layer is a source IP address added to a PDU during the encapsulation process?

network layer (router)

At which OSI layer is a destination port number added to a PDU during the encapsulation process?

transport layer

At which OSI layer is data added to a PDU during the encapsulation process?

application layer

At which OSI layer is a source IP address added to a PDU during the encapsulation process?

network layer

At which OSI layer is data added to a PDU during the encapsulation process?

application layer

At which OSI layer is a destination IP address added to a PDU during the encapsulation process?

network layer

At which OSI layer is a source MAC address added to a PDU during the encapsulation process?

data link layer