CCNA 1 v7 Modules 1 – 3 Basic Network Connectivity and Communications Exam Answers - CCNA 1 v7 - Studocu

CCNA 1 v7 Modules 1 – 3: Basic Network Connectivity and Communications Exam
Answers

Introduction to Networks (Version 7) – Modules 1 – 3: Basic Network

Connectivity and Communications Exam

1. During a routine inspection, a technician discovered that software that
was installed on a computer was secretly collecting data about websites
that were visited by users of the computer. Which type of threat is
affecting this computer?
DoS attack
identity theft
 spyware
zero-day attack
2. Which term refers to a network that provides secure access to the
corporate offices by suppliers, customers and collaborators?
Internet
intranet
 extranet
extendednet
3. A large corporation has modified its network to allow users to access
network resources from their personal laptops and smart phones. Which
networking trend does this describe?
cloud computing
online collaboration
 bring your own device
video conferencing
4. What is an ISP?
It is a standards body that develops cabling and wiring standards for networking.
It is a protocol that establishes how computers within a local network communicate.
 It is an organization that enables individuals and businesses to
connect to the Internet.
It is a networking device that combines the functionality of several different networking
devices in one.

5. Match the requirements of a reliable network with the supporting
network architecture. (Not all options are used.)

6. 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
the Internet
an extranet
a local area network
Explanation: Intranet is a term used to refer to a private connection of LANs and WANs that
belongs to an organization. An intranet is designed to be accessible only by the organization’s
members, employees, or others with authorization.

7. Which statement describes the use of powerline networking
technology?
New “smart” electrical cabling is used to extend an existing home LAN.
A home LAN is installed without the use of physical cabling.

email
on-line purchasing
 video conferencing
wiki
12. 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 a wireless network
 installing antivirus software
implementing an intrusion detection system
adding a dedicated intrusion prevention device
Explanation: Technically complex security measures such as intrusion prevention and
intrusion prevention systems are usually associated with business networks rather than home
networks. Installing antivirus software, antimalware software, and implementing a firewall will
usually be the minimum requirements for home networks. Installing a home wireless network will
not improve network security, and will require further security actions to be taken.

13. 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.)
 VTY interface
 console interface
Ethernet interface
boot IOS mode
 privileged EXEC mode
router configuration mode
Explanation: Access to the VTY and console interfaces can be restricted using passwords.
Out-of-band management of the router can be restricted in both user EXEC and privileged
EXEC modes.

14. Which interface allows remote management of a Layer 2 switch?
the AUX interface
the console port interface
 the switch virtual interface
the first Ethernet port interface
Explanation: In a Layer 2 switch, there is a switch virtual interface (SVI) that provides a
means for remotely managing the device.

15. What function does pressing the Tab key have when entering a
command in IOS?
It aborts the current command and returns to configuration mode.
It exits configuration mode and returns to user EXEC mode.
It moves the cursor to the beginning of the next line.
 It completes the remainder of a partially typed word in a command.
Explanation: Pressing the Tab key after a command has been partially typed will cause the
IOS to complete the rest of the command.

16. 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.
Delete the vlan file and reboot the device.
Close and reopen the terminal emulation software.
Issue the copy startup-config running-config command.
Explanation: The technician does not want to make any mistakes trying to remove all the
changes that were done to the running configuration file. The solution is to reboot the router
without saving the running configuration. The copy startup-config running-config command does
not overwrite the running configuration file with the configuration file stored in NVRAM, but
rather it just has an additive effect.

17. 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 restart the ping process
 to interrupt the ping process
to exit to a different configuration mode
to allow the user to complete the command
Explanation: To interrupt an IOS process such as ping or traceroute, a user enters the Ctrl-
Shift-6 key combination. Tab completes the remainder of parameters or arguments within a
command. To exit from configuration mode to privileged mode use the Ctrl-Z keystroke. CTRL-R
will redisplay the line just typed, thus making it easier for the user to press Enter and reissue the
ping command.

18. Refer to the exhibit. A network administrator is configuring access
control to switch SW1. If the administrator uses a console connection to
connect to the switch, which password is needed to access user EXEC
mode?

CCNA-1-v7-Modules-1-3-Basic Network Connectivity and Communications Exam
Answers 14
letmein
secretin
 lineconin
linevtyin

 SwBranch
Explanation: Some guidelines for naming conventions are that names should:
Start with a letter
Contain no spaces
End with a letter or digit
Use only letters, digits, and dashes
Be less than 64 characters in length

23. How is SSH different from Telnet?
SSH makes connections over the network, whereas Telnet is for out-of-band access.
 SSH provides security to remote sessions by encrypting messages
and using user authentication. Telnet is considered insecure and
sends messages in plaintext.
SSH requires the use of the PuTTY terminal emulation program. Tera Term must be
used to connect to devices through the use of Telnet.
SSH must be configured over an active network connection, whereas Telnet is used to
connect to a device from a console connection.
Explanation: SSH is the preferred protocol for connecting to a device operating system over
the network because it is much more secure than Telnet. Both SSH and Telnet are used to
connect to devices over the network, and so are both used in-band. PuTTY and Terra Term can
be used to make both SSH and Telnet connections.

24. 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.)

CCNA-1-v7-Modules-1-3-Basic Network Connectivity and Communications Exam
Answers 24

Explanation: The configuration mode that the administrator first encounters is user EXEC
mode. After the enable command is entered, the next mode is privileged EXEC mode. From
there, the configure termina l command is entered to move to global configuration mode.
Finally, the administrator enters the line console 0 command to enter the mode in which the
configuration will be entered.

25. What are three characteristics of an SVI? (Choose three.)
It is designed as a security protocol to protect switch ports.
 It is not associated with any physical interface on a switch.
It is a special interface that allows connectivity by different types of media.
It is required to allow connectivity by any device at any location.
 It provides a means to remotely manage a switch.
 It is associated with VLAN1 by default.
Explanation: Switches have one or more switch virtual interfaces (SVIs). SVIs are created in
software since there is no physical hardware associated with them. Virtual interfaces provide a
means to remotely manage a switch over a network that is using IP. Each switch comes with one
SVI appearing in the default configuration “out-of-the-box.” The default SVI interface is VLAN1.

27. Match the description with the associated IOS mode. (Not all options
are used.)

28. Match the definitions to their respective CLI hot keys and shortcuts.
(Not all options are used.)

Explanation: The shortcuts with their functions are as follows:

Tab – Completes the remainder of a partially typed command or keyword
Space bar – displays the next screen
-? – provides context-sensitive help
Up Arrow – Allows user to scroll backward through former commands
Ctrl-C – cancels any command currently being entered and returns directly to privileged EXEC

 flow control
access method
response timeout
Explanation: In order for two computers to be able to communicate effectively, there must be
a mechanism that allows both the source and destination to set the timing of the transmission
and receipt of data. Flow control allows for this by ensuring that data is not sent too fast for it to
be received properly.

34. Which statement accurately describes a TCP/IP encapsulation process
when a PC is sending data to the network?
Data is sent from the internet layer to the network access layer.
Packets are sent from the network access layer to the transport layer.
 Segments are sent from the transport layer to the internet layer.
Frames are sent from the network access layer to the internet layer.
Explanation: When the data is traveling from the PC to the network, the transport layer sends
segments to the internet layer. The internet layer sends packets to the network access layer,
which creates frames and then converts the frames to bits. The bits are released to the network
media.

35. What three application layer protocols are part of the TCP/IP protocol
suite? (Choose three.)
ARP
 DHCP
 DNS
 FTP
NAT
PPP
Explanation: DNS, DHCP, and FTP are all application layer protocols in the TCP/IP protocol
suite. ARP and PPP are network access layer protocols, and NAT is an internet layer protocol in
the TCP/IP protocol suite.

36. Match the description to the organization. (Not all options are used.)

37. Which name is assigned to the transport layer PDU?
bits
data
frame
packet
 segment
Explanation: Application data is passed down the protocol stack on its way to be transmitted
across the network media. During the process, various protocols add information to it at each
level. At each stage of the process, a PDU (protocol data unit) has a different name to reflect its
new functions. The PDUs are named according to the protocols of the TCP/IP suite:
Data – The general term for the PDU used at the application layer.
Segment – transport layer PDU
Packet – network layer PDU
Frame – data link layer PDU
Bits – A physical layer PDU used when physically transmitting data over the medium

CCNA-1-v7-Modules-1-3-Basic Network Connectivity and Communications Exam
Answers 41

42. Which PDU format is used when bits are received from the network
medium by the NIC of a host?
file
 frame
packet
segment
Explanation: When received at the physical layer of a host, the bits are formatted into a
frame at the data link layer. A packet is the PDU at the network layer. A segment is the PDU at
the transport layer. A file is a data structure that may be used at the application layer.

43. Refer to the exhibit. ServerB is attempting to contact HostA. Which
two statements correctly identify the addressing that ServerB will
generate in the process? (Choose two.)

ServerB will generate a packet with the destination IP address of RouterB.
ServerB will generate a frame with the destination MAC address of SwitchB.
ServerB will generate a packet with the destination IP address of RouterA.
 ServerB will generate a frame with the destination MAC address of
RouterB.
 ServerB will generate a packet with the destination IP address of
HostA.
ServerB will generate a frame with the destination MAC address of RouterA.
44. Which method allows a computer to react accordingly when it requests
data from a server and the server takes too long to respond?
encapsulation
flow control
access method
 response timeout
45. 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
HTTP, TCP, IP, Ethernet
Ethernet, TCP, IP, HTTP
HTTP, Ethernet, IP, TCP
Explanation:

HTTP governs the way that a web server and client interact.
TCP manages individual conversations between web servers and clients.
IP is responsible for delivery across the best path to the destination.
Ethernet takes the packet from IP and formats it for transmission.

46. Which two OSI model layers have the same functionality as a single
layer of the TCP/IP model? (Choose two.)
 data link
network
 physical

Explanation: A router is used to determine the path that the messages should take through
the network. A firewall is used to filter incoming and outgoing traffic. A DSL modem is used to
provide Internet connection for a home or an organization.

52. Open the PT Activity. Perform the tasks in the activity instructions and
then answer the question.

CCNA-1-v7-Modules-1-3-Basic Network Connectivity and Communications Exam
Answers 52

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What is the IP address of the switch virtual interface (SVI) on Switch0?
 192.168.
192.168.
192.168.
192.168.
Explanation: After the enable command is issued, the show running-configuration command
or the show ip interfaces brief command will display the IP address of the switch virtual interface
(SVI).

53. Why would a Layer 2 switch need an IP address?
to enable the switch to send broadcast frames to attached PCs
to enable the switch to function as a default gateway
 to enable the switch to be managed remotely
to enable the switch to receive frames from attached PCs
Explanation: A switch, as a Layer 2 device, does not need an IP address to transmit frames
to attached devices. However, when a switch is accessed remotely through the network, it must
have a Layer 3 address. The IP address must be applied to a virtual interface rather than to a
physical interface. Routers, not switches, function as default gateways.

54. Refer to the exhibit. An administrator is trying to configure the switch
but receives the error message that is displayed in the exhibit. What is the
problem?

CCNA-1-v7-Modules-1-3-Basic Network Connectivity and Communications Exam
Answers 54
The entire command, configure terminal, must be used.
The administrator is already in global configuration mode.
 The administrator must first enter privileged EXEC mode before
issuing the command.
The administrator must connect via the console port to access global configuration
mode.
Explanation: In order to enter global configuration mode, the command configure terminal, or
a shortened version such as config t, must be entered from privileged EXEC mode. In this
scenario the administrator is in user EXEC mode, as indicated by the > symbol after the
hostname. The administrator would need to use the enable command to move into privileged
EXEC mode before entering the configure terminal command.

55. What term describes a network owned by one organization that
provides safe and secure access to individuals who work for a different
organization?
 extranet
cloud
BYOD
quality of service
56. What term describes storing personal files on servers over the internet
to provide access anywhere, anytime, and on any device?
 cloud
BYOD
quality of service
converged network
57. What term describes a network where one computer can be both client
and server?
 peer-to-peer
cloud
BYOD
quality of service
58. What term describes a type of network used by people who work from
home or from a small remote office?
 SOHO network
BYOD
quality of service
converged network
59. What term describes a computing model where server software runs
on dedicated computers?
 client/server
internet
intranet
extranet
60. What term describes a type of network used by people who work from
home or from a small remote office?
 SOHO network
internet