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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.
Provide redundant links and devices
fault tolerance
Expand the network without degrading the service for existing users
Scalability
Protect the network from unauthorized access
Security
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
Internet connectivity type that is not suited for heavily wooded areas
satellite
Internet connectivity type that uses coaxial cable as a medium
Internet connectivity type that typically has very low bandwidth
Internet connectivity type that has 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 types of data that need to be prioritized
the cost of the end devices utilized in the network
the distance the selected medium can successfully carry a signal
the number of intermediate devices installed in the network
the environment where the selected medium is to be installed
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 occice 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
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.)
VTY interface
console interface
Ethernet interface
boot IOS mode
privileged EXEC mode
router configuration mode
VTY interface
console interface
privileged EXEC mode
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
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 process
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.)
RAM provides nonvolatile storage.
The configuration that is actively running on the device is stored in RAM.
The contents of RAM are lost during a power cycle.
RAM is a component in Cisco switches but not in Cisco routers.
RAM is able to store multiple versions of IOS and configuration files.
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.)
Branch2!
RM-3-Switch-2A4
Floor(15)
HO Floor 17
SwBranch799
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.
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 diccerent 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.
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.
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
ARP
DHCP
DNS
FTP
NAT
PPP
DHCP
DNS
FTP
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
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? (Choose two.)
data link
network
physical
session
transport
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?
Network protocols define the type of hardware that is used and how it is mounted in racks.
They define how messages are exchanged between the source and the destination.
They all function in the network access layer of TCP/IP.
They are only required for exchange of messages between devices on remote networks.
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 a network owned by one organization that provides safe and secure access to individuals who work for a diccerent organization?
extranet
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 occice?
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
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 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
At which OSI layer is a source port number added to a PDU during the encapsulation process?
transport layer
At which OSI layer is a destination MAC address added to a PDU during the encapsulation process?
data link layer
At which OSI layer is a source port number added to a PDU during the encapsulation process?
transport layer
A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
the amount of traffic that is currently crossing the network
the sophistication of the encapsulation method applied to the data
the type of traffic that is crossing the network
the latency that is created by the number of network devices that the data is crossing
the bandwidth of the WAN connection to the Internet
the reliability of the gigabit Ethernet infrastructure of the backbone
the amount of traffic that is currently crossing the network
the type of traffic that is crossing the network
the latency that is created by the number of network devices that the data is crossing
What are two characteristics of fiber-optic cable? (Choose two.)
It is not accected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding, and twisting to protect data.
It typically contains 4 pairs of fiber-optic wires.
It is more expensive than UTP cabling is.
It is not affected by EMI or RFI.
It is more expensive than UTP cabling is
What is a primary role of the Physical layer in transmitting data on the network?
create the signals that represent the bits in each frame on to the media
In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? (Choose two.)
crosstalk
bandwidth
size of the network
signal modulation technique
electromagnetic interference
crosstalk
electromagnetic interference
Which two devices commonly accect wireless networks? (Choose two.)
Blu-ray players
home theaters
cordless phones
microwaves
incandescent light bulbs
external hard drives
cordless phones
microwaves
Which two statements describe the services provided by the data link layer? (Choose two.)
It defines the end-to-end delivery addressing scheme.
It maintains the path between the source and destination devices during the data transmission.
It manages the access of frames to the network media.
It provides reliable delivery through link establishment and flow control.
It ensures that application data will be transmitted according to the prioritization.
It packages various Layer 3 PDUs into a frame format that is compatible with the network interface.
It manages the access of frames to the network media.
It packages various Layer 3 PDUs into a frame format that is compatible with the network interface.
What is the function of the CRC value that is found in the FCS field of a frame?
to verify the integrity of the received frame
What is contained in the trailer of a data-link frame?
error detection
Which statement describes a characteristic of the frame header fields of the data link layer?
They all include the flow control and logical connection fields.
Ethernet frame header fields contain Layer 3 source and destination addresses.
They vary depending on protocols.
They include information on user applications.
They vary depending on protocols.
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?
partial mesh
Which two fields or features does Ethernet examine to determine if a received frame is passed to the data link layer or discarded by the NIC? (Choose two.)
auto-MDIX
CEF
Frame Check Sequence
minimum frame size
source MAC address
Frame Check Sequence
minimum frame size
Which media communication type does not require media arbitration in the data link layer?
full-duplex
Which statement describes an extended star topology?
End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.
End devices are connected together by a bus and each bus connects to a central intermediate device.
Each end system is connected to its respective neighbor via an intermediate device.
All end and intermediate devices are connected in a chain to each other.
End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.
What is a characteristic of the LLC sublayer?
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
What are three ways that media access control is used in networking? (Choose three.)
Ethernet utilizes CSMA/CD.
Media access control provides placement of data frames onto the media.
Contention-based access is also known as deterministic.
802.11 utilizes CSMA/CD.
Data link layer protocols define the rules for access to diccerent media.
Networks with controlled access have reduced performance due to data collisions.
Ethernet utilizes CSMA/CD.
Media access control provides placement of data frames onto the media.
Data link layer protocols define the rules for access to different media
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
The physical address is added.
What three items are contained in an Ethernet header and trailer? (Choose three.)
source IP address
source MAC address
destination IP address
destination MAC address
error-checking information
source MAC address
destination MAC address
error-checking information
What type of communication rule would best describe CSMA/CD?
access method
Which three basic parts are common to all frame types supported by the data link layer? (Choose three.)
header
type field
MTU size
data
trailer
CRC value
header
data
trailer
Which statement is true about the CSMA/CD access method that is used in Ethernet?
When a device hears a carrier signal and transmits, a collision cannot occur.
A jamming signal causes only devices that caused the collision to execute a backoff algorithm.
All network devices must listen before transmitting.
Devices involved in a collision get priority to transmit after the backoff period.
All network devices must listen before transmitting.
What is the auto-MDIX feature on a switch?
the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection
A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task?
shared memory buffering
What are two examples of the cut-through switching method? (Choose two.)
store-and-forward switching
fast-forward switching
CRC switching
fragment-free switching
QOS switching
fast-forward switching
fragment-free switching
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
store-and-forward switching
What is the purpose of the FCS field in a frame?
to obtain the MAC address of the sending node
to verify the logical address of the sending node
to compute the CRC header for the data field
to determine if errors occurred in the transmission and reception
to determine if errors occurred in the transmission and reception
Which switching method has the lowest level of latency?
cut-through
store-and-forward
fragment-free
fast-forward
fast-forward
A network administrator is connecting two modern switches using a straight-through cable. The switches are new and have never been configured. Which three statements are correct about the final result of the connection? (Choose three.)
The link between the switches will work at the fastest speed that is supported by both switches.
The link between switches will work as full-duplex.
If both switches support diccerent speeds, they will each work at their own fastest speed.
The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.
The connection will not be possible unless the administrator changes the cable to a crossover cable.
The duplex capability has to be manually configured because it cannot be negotiated.
The link between the switches will work at the fastest speed that is supported by both switches.
The link between switches will work as full-duplex.
The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.
Which advantage does the store-and-forward switching method have compared with the cut-through switching method?
collision detecting
frame error checking
faster frame forwarding
frame forwarding using IPv4 Layer 3 and 4 information
frame error checking
When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check?
CRC in the trailer
source MAC address in the header
destination MAC address in the header
protocol type in the header
CRC in the trailer
Which switching method uses the CRC value in a frame?
cut-through
fast-forward
fragment-free
store-and-forward
store-and-forward
What are two actions performed by a Cisco switch? (Choose two.)
building a routing table that is based on the first IP address in the frame header
using the source MAC addresses of frames to build and maintain a MAC address table
forwarding frames with unknown destination IP addresses to the default gateway
utilizing the MAC address table to forward frames via the destination MAC address
examining the destination MAC address to add new entries to the MAC address table
using the source MAC addresses of frames to build and maintain a MAC address table
utilizing the MAC address table to forward frames via the destination MAC address
Which two statements describe features or functions of the logical link control sublayer in Ethernet standards? (Choose two.)
Logical link control is implemented in software.
Logical link control is specified in the IEEE 802.3 standard.
The LLC sublayer adds a header and a trailer to the data.
The data link layer uses LLC to communicate with the upper layers of the protocol suite.
The LLC sublayer is responsible for the placement and retrieval of frames on and off the media
Logical link control is implemented in software.
The data link layer uses LLC to communicate with the upper layers of the protocol suite.
What is the auto-MDIX feature?
It enables a device to automatically configure an interface to use a straight-through or a crossover cable.
It enables a device to automatically configure the duplex settings of a segment.
It enables a device to automatically configure the speed of its interface.
It enables a switch to dynamically select the forwarding method.
It enables a device to automatically configure an interface to use a straight-through or a crossover cable.
What is one advantage of using the cut-through switching method instead of the store-and-forward switching method?
has a positive impact on bandwidth by dropping most of the invalid frames
makes a fast forwarding decision based on the source MAC address of the frame
has a lower latency appropriate for high-performance computing applications
provides the flexibility to support any mix of Ethernet speeds
has a lower latency appropriate for high-performance computing applications
Which is a multicast MAC address?
cc-cc-cc-cc-cc-cc
5C-26-0A-4B-19-3E
01-00-5E-00-00-03
00-26-0F-4B-00-3E
01-00-5E-00-00-03
What does the term “attenuation” mean in data communication?
loss of signal strength as distance increases
time for a signal to reach its destination
leakage of signals from one cable pair to another
strengthening of a signal by a networking device
loss of signal strength as distance increases
What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
greater distances per cable run
lower installation cost
limited susceptibility to EMI/RFI
durable connections
greater bandwidth potential
easily terminated
greater distances per cable run
limited susceptibility to EMI/RFI
greater bandwidth potential
What OSI physical layer term describes the process by which one wave modifies another wave?
modulation
IEEE
EIA/TIA
air
modulation