Explain:
The OSI model network layer corresponds directly to the
internet layer of the TCP/IP model and is used to describe
protocols that address and route messages through an
internetwork.
4. Which type of server relies on record types
such as A, NS, AAAA, and MX in order to provide
services?
□ DNS
_ email
□ file
□ web
Explain:
A DNS server stores records that are used to resolve IP
addresses to host names. Some DNS record types include the
following:
A - an end device IPv4 address
NS - an authoritative name server
AAAA - an end device IPv6 address
MX - a mail exchange record
5. What are proprietary protocols?
j protocols developed by private organizations to
operate on any vendor hardware
□ protocols that can be freely used by any organization
or vendor
protocols developed by organizations
who have control over their definition
and operation
z a collection of protocols known as the TCP/IP
protocol suite
CCNA 1 - Introduction to Networks (Version
7.00) - ITNv7 Final Exam Answers Full
Number of questions: 60; Passed score: 80-
100%
1. Which two traffic types use the Real-Time
Transport Protocol (RTP)? (Choose two.)
u video
u web
u file transfer
□ voice
□ peer to peer
2. Which wireless technology has low-power and
data rate requirements making it popular in
home automation applications?
n ZigBee
n LoRaWAN
n 5G
Wi-Fi
Explanation: ZigBee is an IEEE 802.15.4 wireless standard
designed for creating personal-area networks. Low energy,
power, and data rate requirements make Zigbee a popular
protocol for connecting home automation devices.
3. Which layer of the TCP/IP model provides a
route to forward messages through an
internetwork?
□ application
□ network access
□ internet
n transport

Explain:
Proprietary protocols have their definition and operation
controlled by one company or vendor. Some of them can be
used by different organizations with permission from the owner.
The TCP/IP protocol suite is an open standard, not a
proprietary protocol.
6. What service is provided by DNS?
□ Resolves domain names, such as
cisco.com, into IP addresses.
□ A basic set of rules for exchanging text, graphic
images, sound, video, and other multimedia files on
the web.
n Allows for data transfers between a client and a file
server.
□ Uses encryption to secure the exchange of text,
graphic images, sound, and video on the web.
7. A client packet is received by a server. The
packet has a destination port number of 110.
What service is the client requesting?
n DNS
□ DHCP
□ SMTP
n POP3
8. What command can be used on a Windows PC
to see the IP configuration of that computer?
u show ip interface brief
u ping
u show interfaces
□ ipconfig
9. A wired laser printer is attached to a home
computer. That printer has been shared so that
other computers on the home network can also
use the printer. What networking model is in
use?
J client-based
_ master-slave
point-to-point
j peer-to-peer (P2P)
Explanation: Peer-to-peer (P2P) networks have two or more
network devices that can share resources such as printers or
files without having a dedicated server.
10. What characteristic describes a virus?
□ a network device that filters access and traffic
coming into a network
“I the use of stolen credentials to access private data
“I an attack that slows or crashes a device or network
service
malicious software or code running on an
end device
11. Three bank employees are using the
corporate network. The first employee uses a
web browser to view a company web page in
order to read some announcements. The second
employee accesses the corporate database to
perform some financial transactions. The third
employee participates in an important live audio
conference with other corporate managers in
branch offices. If QoS is implemented on this
network, what will be the priorities from highest
to lowest of the different data types?
J financial transactions, web page, audio conference
□ audio conference, financial transactions,
web page
□ financial transactions, audio conference, web page
□ audio conference, web page, financial transactions

Explanation: QoS mechanisms enable the establishment of
queue management strategies that enforce priorities for
different categories of application data. Thus, this queuing
enables voice data to have priority over transaction data, which
has priority over web data.
model would be used?
12. Match the description to the IPv6 addressing
component. (Not all options are used.)
□ only application and Internet layers
only Internet and network access layers
only application, Internet, and network access layers
application, transport, Internet, and
network access layers
□ only application, transport, network, data link, and
physical layers
□ application, session, transport, network, data link,
and physical layers
Explanation: The TCP/IP model contains the application,
transport, internet, and network access layers. A file transfer
uses the FTP application layer protocol. The data would move
from the application layer through all of the layers of the model
and across the network to the file server.
14. Match the characteristic to the forwarding
method. (Not all options are used.)
13. Refer to the exhibit. If Host1 were to transfer
a file to the server, what layers of the TCP/IP

gateway setting of host Hl?
□ Rl: S0/0/0
t R2: SO/O/1
n RLGO/O
n R2: SO/O/O
Explanation: The default gateway for host Hl is the router
interface that is attached to the LAN that Hl is a member of. In
this case, that is the G0/0 interface of Rl. Hl should be
configured with the IP address of that interface in its addressing
settings. Rl will provide routing services to packets from Hl
that need to be forwarded to remote networks.
Explanation: A storc-and-forward switch always stores the
entire frame before forwarding, and checks its CRC and frame
length. A cut-through switch can forward frames before
receiving the destination address field, thus presenting less
latency than a store-and-forward switch. Because the frame
can begin to be forwarded before it is completely received, the
switch may transmit a corrupt or runt frame. All forwarding
methods require a Layer 2 switch to forward broadcast frames.
15. Refer to the exhibit. The IP address of which
device interface should be used as the default
16. What service is provided by Internet
Messenger?
□ An application that allows real-time
chatting among remote users.
□ Allows remote access to network devices and
servers.

□ Resolves domain names, such as cisco.com, into IP
addresses.
u Uses encryption to provide secure remote access to
network devices and servers.
1 7. Refer to the exhibit. Match the network with
the correct IP address and prefix that will satisfy
the usable host addressing requirements for
each network.
Explanation: Network A needs to use 192.168.0.128 /25,
which yields 128 host addresses.
Network B needs to use 192.168.0.0 /26, which yields 64 host
addresses.
Network C needs to use 192.168.0.96 Z27, which yields 32 host
addresses.
Network D needs to use 192.168.0.80/30, which yields 4 host
addresses.

18. Refer to the exhibit. Which protocol was
responsible for building the table that is shown?
□ EMI
j signal attenuation
20. A host is trying to send a packet to a device
on a remote LAN segment, but there are
currently no mappings in its ARP cache. How will
the device obtain a destination MAC address?
(A host is trying to send a packet to a device on a remote LAN
segment, but there are currently no mappings in the ARP
cache. How will the device obtain a destination MAC address?)
n It will send the frame and use its own MAC address
as the destination.
J It will send an ARP request for the MAC address of
the destination device.
□ It will send the frame with a broadcast MAC address.
□ It will send a request to the DNS server for the
destination MAC address.
□ It will send an ARP request for the MAC
address of the default gateway.
22. A client packet is received by a server. The
packet has a destination port number of 53.
What service is the client requesting?
J DNS
NetBIOS (NetBT)
POP3
□ IMAP
23. A network administrator is adding a new LAN
to a branch office. The new LAN must support 25
connected devices. What is the smallest network
mask that the network administrator can use for
the new network?
t 255.255.255.128
I 255.255.255.192
j 255.255.255.224
255.255.255.240
□ ARP
□ DNS
□ ICMP
Explanation: The table that is shown corresponds to the
output of the arp -a command, a command that is used on a
Windows PC to display the ARP table.
19. A network administrator notices that some
newly installed Ethernet cabling is carrying
corrupt and distorted data signals. The new
cabling was installed in the ceiling close to
fluorescent lights and electrical equipment.
Which two factors may interfere with the copper
cabling and result in signal distortion and data
corruption? (Choose two.)
u crosstalk
□ extended length of cabling
□ RFI

Loading page 6...

24. What characteristic describes a Trojan horse?
u malicious software or code running on an
end device
u an attack that slows or crashes a device or network
service
□ the use of stolen credentials to access private data
□ a network device that filters access and traffic
coming into a network
25. What service is provided by HTTPS?
n Uses encryption to provide secure remote access to
network devices and servers.
u Resolves domain names, such as cisco.com, into IP
addresses.
□ Uses encryption to secure the exchange
of text, graphic images, sound, and video
on the web.
□ Allows remote access to network devices and
servers.
26. A technician with a PC is using multiple
applications while connected to the Internet.
How is the PC able to keep track of the data flow
between multiple application sessions and have
each application receive the correct packet
flows?
□ The data flow is being tracked based on the
destination MAC address of the technician PC.
□ The data flow is being tracked based on
the source port number that is used by
each application.
n The data flow is being tracked based on the source
IP address that is used by the PC of the technician.
□ The data flow is being tracked based on the
destination IP address that is used by the PC of the
technician.
Explanation:
The source port number of an application is randomly
generated and used to individually keep track of each session
connecting out to the Internet. Each application will use a
unique source port number to provide simultaneous
communication from multiple applications through the Internet.
27. A network administrator is adding a new LAN
to a branch office. The new LAN must support 61
connected devices. What is the smallest network
mask that the network administrator can use for
the new network?
□ 255.255.255.240
- 255.255.255.224
1 255.255.255.192
- 255.255.255.128
28. Refer to the exhibit. Match the network with
the correct IP address and prefix that will satisfy
the usable host addressing requirements for

Loading page 7...

each network. (Not all options are used.)
Nwwrtt
t w w u ;
11(2.168.0192X27
tatvnft D
Sw-xkC
192168.0 2M.732
(IJ ExamAnswers
192 1680 0 7 1
192 n u m ■«
JMw.tl
1*2 I$$4n2#tao
WMgtB
ITN (Version 7.00) - ITNv7 Final Exam
Explanation:
Network A needs to use 192.168.0.0/25 which yields 128 host
addresses.
Network B needs to use 192.168.0.128 /26 which yields 64 host
addresses.
Network C needs to use 192.168.0.192 /27 which yields 32 host
addresses.

Loading page 8...

Network D needs to use 192.168.0.224 /30 which yields 4 host
addresses.
□ Allows remote access to network devices and
servers.
j Uses encryption to provide secure remote access to
network devices and servers.
□ An application that allows real-time chatting among
remote users.
32. Which scenario describes a function provided
by the transport layer?
“I A student is using a classroom VoIP phone to call
home. The unique identifier burned into the phone is
a transport layer address used to contact another
network device on the same network.
- A student is playing a short web-based movie with
sound. The movie and sound are encoded within the
transport layer header.
□ A student has two web browser windows
open in order to access two web sites.
The transport layer ensures the correct
web page is delivered to the correct
browser window.
□ A corporate worker is accessing a web server
located on a corporate network. The transport layer
formats the screen so the web page appears
properly no matter what device is being used to view
the web site.
Explain:
The source and destination port numbers arc used to identify
the correct application and window within that application.
33.Refer to the exhibit. Host B on subnet
Teachers transmits a packet to host D on subnet
Students. Which Layer 2 and Layer 3 addresses
are contained in the PDUs that are transmitted
from host B to the router?
29. What characteristic describes a DoS attack?
n the use of stolen credentials to access private data
n a network device that filters access and traffic
coming into a network
u software that is installed on a user device and
collects information about the user
□ an attack that slows or crashes a device
or network service
30. Match the application protocols to the correct
transport protocols
31. What service is provided by SMTP?
u Allows clients to send email to a mail
server and the servers to send email to
other servers.

Loading page 9...

□ loss of signal strength as distance
increases
Explanation: Data is transmitted on copper cables as
electrical pulses. A detector in the network interface of a
destination device must receive a signal that can be
successfully decoded to match the signal sent. However, the
farther the signal travels, the more it deteriorates. This is
referred to as signal attenuation.
35. 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?
□ The entire command, configure terminal, must be
used.
1 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.
36. Which two protocols operate at the top layer
of the TCP/IP protocol suite? (Choose two.)
z TCP
IP
- UDP
z POP
□ DNS
Ethernet
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.200
Layer 3 source address = 172.16.10.200
Layer 2 destination address = 00-00-0c-94-36-dd
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.200
Layer 3 source address = 172.16.10.200
Layer 2 destination address = 00-00-0c-94-36-cd
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.99
Layer 3 source address = 172.16.10.200
Layer 2 destination address = 00-00-0c-94-36-ab
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.200
Layer 3 source address = 172.16.100.200
34. What does the term "attenuation" mean in
data communication?
u strengthening of a signal by a networking device
u leakage of signals from one cable pair to another
□ time for a signal to reach its destination

Loading page 10...

31. A company has a file server that shares a
folder named Public. The network security policy
specifies that the Public folder is assigned Read-
Only rights to anyone who can log into the server
while the Edit rights are assigned only to the
network admin group. Which component is
addressed in the AAA network service
framework?
□ automation
n accounting
n authentication
□ authorization
After a user is successfully authenticated (logged into the
server), the authorization is the process of determining what
network resources the user can access and what operations
(such as read or edit) the user can perform.
38. What three requirements are defined by the
protocols used in network communcations to
allow message transmission across a network?
(Choose three.)
□ message size
□ message encoding
□ connector specifications
□ media selection
n delivery options
n end-device installation
39. What are two characteristics of IP? (Choose
two.)
u does not require a dedicated end-to-end
connection
□ operates independently of the network
media
□ retransmits packets if errors occur
□ re-assembles out of order packets into the correct
order at the receiver end
j guarantees delivery of packets
Explain:
The Internet Protocol (IP) is a connectionless, best effort
protocol. This means that IP requires no end-to-end connection
nor does it guarantee delivery of packets. IP is also media
independent, which means it operates independently of the
network media carrying the packets.
40. An employee of a large corporation remotely
logs into the company using the appropriate
username and password. The employee is
attending an important video conference with a
customer concerning a large sale. It is important
for the video quality to be excellent during the
meeting. The employee is unaware that after a
successful login, the connection to the company
ISP failed. The secondary connection, however,
activated within seconds. The disruption was not
noticed by the employee or other employees.
What three network characteristics are described
in this scenario? (Choose three.)
□ security
□ quality of service
1 scalability
powerline networking
integrity
J fault tolerance
41. What are two common causes of signal
degradation when using UTP cabling? (Choose
two.)
□ improper termination
□ low-quality shielding in cable

Loading page 11...

□ installing cables in conduit
u low-quality cable or connectors
u loss of light over long distances
Explanation: When terminated improperly, each cable is a
potential source of physical layer performance degradation.
□ There is connectivity between this device
and the device at 192.168.100.1.
J The connectivity between these two hosts allows for
videoconferencing calls.
The average transmission time between the two
hosts is 2 milliseconds.
Explain:
The output displays a successful Layer 3 connection between a
host computer and a host at 19.168.100.1. It can be determined
that 4 hops exist between them and the average transmission
time is 1 milliseconds. Layer 3 connectivity does not necessarily
mean that an application can run between the hosts.
44. Which two statements describe how to assess
traffic flow patterns and network traffic types
using a protocol analyzer? (Choose two.)
_ Capture traffic on the weekends when most
employees are off work.
□ Capture traffic during peak utilization
times to get a good representation of the
different traffic types.
□ Only capture traffic in the areas of the network that
receive most of the traffic such as the data center.
“I Perform the capture on different network
segments.
1 Only capture WAN traffic because traffic to the web
is responsible for the largest amount of traffic on a
network.
Explanation: Traffic flow patterns should be gathered during
peak utilization times to get a good representation of the
different traffic types. The capture should also be performed on
different network segments because some traffic will be local to
a particular segment.
42. Which subnet would include the address
192.168.1.96 as a usable host address?
u 192.168.1.64/26
□ 192.168.1.32/27
□ 192.168.1.32/28
□ 192.168.1.64/29
Explanation: For the subnet of 192.168.1.64/26, there are 6
bits for host addresses, yielding 64 possible addresses.
However, the first and last subnets are the network and
broadcast addresses for this subnet. Therefore, the range of
host addresses for this subnet is 192.168.1.65 to
192.168.1.126. The other subnets do not contain the address
192.168.1.96 as a valid host address.
43. Refer to the exhibit. On the basis of the
output, which two statements about network
connectivity are correct? (Choose two.)
: : Vsy 152. Ififi. 1 0 0 . 1
rxL-j-ji-,- l i j ' . i C.O i c - 2 . 1 6 2 . i i : . L jv±x - ux .i.xx. ...’ 3 2 xiCS---
1 . i .j a JJ C. i:j 10. ; . .
i 2 r;u 2 t j . nx 122. i o - . 1 . 2 2
3 1 r j -rjr . rta 1 2 h2
H ’ I n - ;■ n, 1 -r- 1.75, .
5 3 rrf 7. “>s 1 7- 1 5 3 . 1 1 9 . 1 1 0 , 1
u This host does not have a default gateway
configured.
□ There are 4 hops between this device
and the device at 192.168.100.1.

Loading page 12...

45. What is the consequence of configuring a
router with the ipv6 unicast-routing global
configuration command?
u All router interfaces will be automatically activated.
□ The IPv6 enabled router interfaces begin
sending ICMPv6 Router Advertisement
messages.
□ Each router interface will generate an IPv6 link-local
address.
n It statically creates a global unicast address on this
router.
46. Which three layers of the OSI model map to
the application layer of the TCP/IP model?
(Choose three.)
u application
□ network
□ data link
□ session
□ presentation
n transport
Explanation: The TCP/IP model consists of four layers:
application, transport, internet, and network access. The OSI
model consists of seven layers: application, presentation,
session, transport, network, data link, and physical. The top
three layers of the OSI model: application, presentation, and
session map to the application layer of the TCP/IP model.
47. Refer to the exhibit. If PCI is sending a
packet to PC2 and routing has been configured
between the two routers, what will R1 do with
the Ethernet frame header attached by PCI?
192.16B.1i?.5.'24 192.163.11.5/24
□ nothing, because the router has a route to the
destination network
j open the header and use it to determine whether the
data is to be sent out SO/O/O
□ open the header and replace the destination MAC
address with a new one
□ remove the Ethernet header and
configure a new Layer 2 header before
sending it out SO/O/O
Explanation: When PC1 forms the various headers attached
to the data one of those headers is the Layer 2 header.
Because PC1 connects to an Ethernet network, an Ethernet
header is used. The source MAC address will be the MAC
address of PCI and the destination MAC address will be that of
G0/0 on Rl. When R1 gets that information, the router removes
the Layer 2 header and creates a new one for the type of
network the data will be placed onto (the serial link).
48. What will happen if the default gateway
address is incorrectly configured on a host?

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□ The host cannot communicate with other hosts in the
local network.
u The host cannot communicate with hosts
in other networks.
n A ping from the host to 127.0.0.1 would not be
successful.
□ The host will have to use ARP to determine the
correct address of the default gateway.
n The switch will not forward packets initiated by the
host.
49. What are two features of ARP? (Choose two.)
u When a host is encapsulating a packet into a frame,
it refers to the MAC address table to determine the
mapping of IP addresses to MAC addresses.
□ An ARP request is sent to all devices on the Ethernet
LAN and contains the IP address of the destination
host and its multicast MAC address.
n If a host is ready to send a packet to a
local destination device and it has the IP
address but not the MAC address of the
destination, it generates an ARP
broadcast.
u If no device responds to the ARP request, then the
originating node will broadcast the data packet to all
devices on the network segment.
□ If a device receiving an ARP request has
the destination IPv4 address, it responds
with an ARP reply.
50. A network administrator is adding a new LAN
to a branch office. The new LAN must support 90
connected devices. What is the smallest network
mask that the network administrator can use for
the new network?
u 255.255.255.128
□ 255.255.255.240
J 255.255.255.248
255.255.255.224
51. What are two ICMPv6 messages that are not
present in ICMP for IPv4? (Choose two.)
j Neighbor Solicitation
- Destination Unreachable
□ Host Confirmation
Time Exceeded
t Router Advertisement
“I Route Redirection
52. A client packet is received by a server. The
packet has a destination port number of 80.
What service is the client requesting?
□ DHCP
□ SMTP
DNS
□ HTTP
53. What is an advantage for small organizations
of adopting IMAP instead of POP?
“I POP only allows the client to store messages in a
centralized way, while IMAP allows distributed
storage.
□ Messages are kept in the mail servers
until they are manually deleted from the
email client.
□ When the user connects to a POP server, copies of
the messages are kept in the mail server for a short
time, but IMAP keeps them for a long time.
“I IMAP sends and retrieves email, but POP only
retrieves email.
Explanation: IMAP and POP are protocols that are used to
retrieve email messages. The advantage of using IMAP instead

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