Cisco Networking Modules 1- 10

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