CCNA 1 v7.0 Final Exam Answers Full – Introduction to Networks Part 1

Which two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.)

video
web
file transfer
voice
peer to peer

Which wireless technology has low-power and data rate requirements making it popular in home automation applications?

ZigBee
LoRaWAN
5G
Wi-Fi

Which layer of the TCP/IP model provides a route to forward messages through an internetwork?

application
network access
internet
transport

Which type of server relies on record types such as A, NS, AAAA, and MX in order to provide services?

DNS
email
file
web

What are proprietary protocols?

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
a collection of protocols known as the TCP/IP protocol suite

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.
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.

A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting?

DNS
DHCP
SMTP
POP3

What command can be used on a Windows PC to see the IP configuration of that computer?

show ip interface brief
ping
show interfaces
ipconfig

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?

client-based
master-slave
point-to-point
peer-to-peer (P2P)

What characteristic describes a virus?

a network device that filters access and traffic coming into a network
the use of stolen credentials to access private data
an attack that slows or crashes a device or network service
malicious software or code running on an end device

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?

financial transactions, web page, audio conference
audio conference, financial transactions, web page
financial transactions, audio conference, web page
audio conference, web page, financial transactions

Match the description to the IPv6 addressing component. (Not all options are used.)

This part of the address is used by an organization to identify subnets.

This network portion of the address is assigned by the provider.

This part of the address is the equivalent to the host portion of an IPv4 address.

global routing prefix

subnet mask

subnet ID

interface ID

Refer to the exhibit. If Host1 were to transfer a file to the server, what layers of the TCP/IP model would be 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

Match the characteristic to the forwarding method. (Not all options are used.)

always stores the entire frame

checks the CRC before forwarding

checks the frame length before forwarding

does not forward broadcasts

has low latency

may forward runt frames

begins forwarding when the destination address is received

cut-through

Target

Target

Target

store-and-forward

Target

Target

Target

Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?
R1: S0/0/0
R2: S0/0/1
R1: G0/0
R2: S0/0/0

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.
Uses encryption to provide secure remote access to network devices and servers.

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.

Network A

Network B

Network C

Network D

192.168.0.96/27

192.168.0.128/25

192.168.0.80/30

192.168.0.0/26

Refer to the exhibit. Which protocol was responsible for building the table that is shown?

<output>

Interface: 192.168.1.67
Internet Address
192.168.1.254
192.168.1.255
224.0.0.22
224.0.0.251
224.0.0.252
255.255.255.255

Interface: 10.82.253.91
Internet Address
10.82.253.92
224.0.0.22
224.0.0.251
224.0.0.252
255.255.255.255

Physical Address
64-0f-29-0d-36-91
ff-ff-ff-ff-ff-ff
01-00-5e-00-00-16
01-00-5e-00-00-fb
01-00-5e-00-00-fc
ff-ff-ff-ff-ff-ff

--- 0x10
Physical Address
64-0f-29-0d-36-91
01-00-5e-00-00-16
01-00-5e-00-00-fb
01-00-5e-00-00-fc
ff-ff-ff-ff-ff-ff

Type
dynamic
static
static
static
static
static

Type
dynamic
static
static
static
static

DHCP
ARP
DNS
ICMP
</output>

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.)

crosstalk
extended length of cabling
RFI​
EMI
signal attenuation

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?)

It will send the frame and use its own MAC address as the destination.
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.

A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting?

DNS
NetBIOS (NetBT)
POP3
IMAP

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?

255.255.255.128
255.255.255.192
255.255.255.224
255.255.255.240

What characteristic describes a Trojan horse?

malicious software or code running on an end device
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

What service is provided by HTTPS?

Uses encryption to provide secure remote access to network devices and servers.
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.

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.
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.

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
255.255.255.192
255.255.255.128

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. (Not all options are used.)

Network C --sw--r1-----r2---- Network D
25 Hosts | | 2 Hosts
Network B Network A
50 Hosts 100 Hosts

Network A

Network B

Network C

Network D

192.168.0.0/24

192.168.0.192/27

192.168.0.228/32

192.168.0.0/25

192.168.0.224/30

192.168.0.128/26

What characteristic describes a DoS attack?

the use of stolen credentials to access private data
a network device that filters access and traffic coming into a network
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

Match the application protocols to the correct transport protocols. (TCP) and (UDP)

DHCP

FTP

HTTP

SMTP

TFTP

What service is provided by SMTP?

Allows clients to send email to a mail server and the servers to send email to other servers.
Allows remote access to network devices and servers.
Uses encryption to provide secure remote access to network devices and servers.
An application that allows real-time chatting among remote users.

Which scenario describes a function provided by the transport layer?

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.

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?

HOST A \ / HOSTC
sw------r-------sw
HOSTB / \ HOSTD

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 = 172.16.10.200

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

What does the term “attenuation” mean in data communication?

strengthening of a signal by a networking device
leakage of signals from one cable pair to another
time for a signal to reach its destination
loss of signal strength as distance increases

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?

Switch1> config t
% Invalid input detected at '^' marker.

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.

Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.)

TCP
IP
UDP
POP
DNS
Ethernet

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
accounting
authentication
authorization

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
delivery options
end-device installation

What are two characteristics of IP? (Choose two.)

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
guarantees delivery of packets

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
scalability
powerline networking
integrity
fault tolerance

What are two common causes of signal degradation when using UTP cabling? (Choose two.)

improper termination
low-quality shielding in cable
installing cables in conduit
low-quality cable or connectors
loss of light over long distances

Which subnet would include the address 192.168.1.96 as a usable host address?

192.168.1.64/26
192.168.1.32/27
192.168.1.32/28
192.168.1.64/29

Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

C:\Windows\system32> tracert 192.168.100.1
Tracing route to 192.168.100.1 over a maximum of 30 hops
1 1 ms <1 ms <1 ms 10.10.10.10
2 1 ms 2 ms 2 ms 192.168.1.22
3 1 ms 2 ms 2 ms 192.168.1.62
4 1 ms 2 ms 2 ms 172.16.1.1
5 1 ms 2 ms 2 ms 192.168.100.1
Trace complete.

This host does not have a default gateway configured.
There are 4 hops between this device and the device at 192.168.100.1.
There is connectivity between this device and the device at 192.168.100.1.
The connectivity between these two hosts allows for videoconferencing calls.
The average transmission time between the two hosts is 2 milliseconds.

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.
Perform the capture on different network segments.
Only capture WAN traffic becau

What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?​

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.​
It statically creates a global unicast address on this router.​

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

application
network
data link
session
presentation
transport

Refer to the exhibit. If PC1 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 PC1?

nothing, because the router has a route to the destination network
open the header and use it to determine whether the data is to be sent out S0/0/0
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 S0/0/0

What will happen if the default gateway address is incorrectly configured on a host?

The host cannot communicate with other hosts in the local network.
The host cannot communicate with hosts in other networks.
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.
The switch will not forward packets initiated by the host.

What are two features of ARP? (Choose two.)

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.
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.
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.

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?

255.255.255.128
255.255.255.240
255.255.255.248
255.255.255.224

What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.)

Neighbor Solicitation
Destination Unreachable
Host Confirmation
Time Exceeded
Router Advertisement
Route Redirection

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

What is an advantage for small organizations of adopting IMAP instead of POP?

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.
IMAP sends and retrieves email, but POP only retrieves email.

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

tracert
ipconfig
netstat
nslookup

Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

implements CSMA/CD over legacy shared half-duplex media
enables IPv4 and IPv6 to utilize the same physical medium
integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper
implements a process to delimit fields within an Ethernet 2 frame
places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?

The switch can communicate with other hosts on the 172.16.100.0 network.
The switch can be remotely managed from a host on another network.
The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1.
The switch will have a management interface with the address 172.16.100.1.

What happens when the transport input ssh command is entered on the switch vty lines?

The SSH client on the switch is enabled.
The switch requires a username/password combination for remote access.
Communication between the switch and remote users is encrypted.
The switch requires remote connections via a proprietary client software.

Match the type of threat with the cause. (Not all options are used.)

hardware threats

environmental threats

electrical threats

maintenance threats

poor handling of key electrical
components (electrostatic discharge),
lack of critical spare parts, poor
cabling, and poor labeling

unauthorized access resulting in loss
of data

temperature extremes (too hot or too
cold) or humidity extremes (too wet or
too dry)

physical damage to servers, routers,
switches, cabling plant, and
workstations

voltage spikes, insufficient supply
voltage (brownouts), unconditioned
power (noise), and total power loss

A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this?

DoS
access
reconnaissance
Trojan horse

What service is provided by HTTP?

Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
Allows for data transfers between a client and a file server.
An application that allows real-time chatting among remote users.
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

FTP
DHCP
Telnet
SSH

What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)

Switches become overloaded because they concentrate all the traffic from the attached subnets.
The ARP request is sent as a broadcast, and will flood the entire subnet.
The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain.
A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table.
All ARP request messages must be processed by all nodes on the local network.

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

netsh interface ipv6 show neighbor
arp -a
tracert
ping
ipconfig
nslookup
telnet

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

analyze the destination IP address
switch the packet to the directly connected interface
look up the next-hop address for the packet
discard the traffic after consulting the route table

What characteristic describes antispyware?

applications that protect end devices from becoming infected with malicious software
a network device that filters access and traffic coming into a network
software on a router that filters traffic based on IP addresses or applications
a tunneling protocol that provides remote users with secure access into the network of an organization

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

Telnet
AUX
SSH
Console

What are the two most effective ways to defend against malware? (Choose two.)

Implement a VPN.
Implement network firewalls.
Implement RAID.
Implement strong passwords.
Update the operating system and other application software.
Install and update antivirus software.

Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall?

brute-force attack
Trojan horse
DoS
buffer overflow

Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?

User Datagram Protocol field
transport layer error check field
flow control field
frame check sequence field
error correction process field

A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.248
255.255.255.0
255.255.255.128
255.255.255.192

What service is provided by POP3?

Retrieves email from the server by downloading the email to the local mail application of the client.
An application that allows real-time chatting among remote users.
Allows remote access to network devices and servers.
Uses encryption to provide secure remote access to network devices and servers.

What two security solutions are most likely to be used only in a corporate environment? (Choose two.)

antispyware
virtual private networks
intrusion prevention systems
strong passwords
antivirus software

What characteristic describes antivirus software?

applications that protect end devices from becoming infected with malicious software
a network device that filters access and traffic coming into a network
a tunneling protocol that provides remote users with secure access into the network of an organization
software on a router that filters traffic based on IP addresses or applications

What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host.
It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host.
It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.

A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?

DNS
DHCP
SMTP
TFTP

An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)

Configure DNS on the router.
Generate two-way pre-shared keys.
Configure the IP domain name on the router.
Generate the SSH keys.
Enable inbound vty SSH sessions.
Enable inbound vty Telnet sessions.

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

handles communication between upper layer networking software and Ethernet NIC hardware
implements trailer with frame check sequence for error detection
places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
implements a process to delimit fields within an Ethernet 2 frame
adds Ethernet control information to network protocol data

An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​

all IPv6 enabled devices on the local link​
all IPv6 DHCP servers​
all IPv6 enabled devices across the network​
all IPv6 configured routers on the local link​

What are the three parts of an IPv6 global unicast address? (Choose three.)

subnet ID
subnet mask
broadcast address
global routing prefix
interface ID

A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)

extensive cabling
mobility options
packet collision
interference
security
coverage area

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

Enter CTRL-Z at the privileged mode prompt.
Exit global configuration mode.
Power cycle the device.
Reboot the device.
Exit privileged EXEC mode and press Enter .