ITEC 245 Practice Exams 1-3

What are three characteristics of an SVI? (Choose three) -It is designed as a security protocol to protect switch ports -It is not associated with any physical interface on a switch -It is a special interface that allows connectivity by different types of media -It is required to allow connectivity by an 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

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

A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? -implementing a firewall -installing a wireless network -installing antivirus software -implementing an intrusion detection system -adding a dedicated instruction prevention device

-implementing a firewall -installing antivirus software

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 e 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 e format that is compatible with the network interface

Which two devices are intermediary devices? (choose two) -host -router -switch -servers

-router -switch

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

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 two criteria are used to help select a network medium from various network media? -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

Which characteristic describes crosstalk? -the distortion of the network signal from fluorescent lighting -the distortion of the transmitted messages from signals carried in adjacent wires -the weakening of the signal over long cable lengths -the loss of wireless signal over an excessive distance from the access point

-the distortion of the transmitted messages from signals carried in adjacent wires

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 statement describes the use of powerline networking technology?

A device connects to an existing home LAN using an adapter and an existing electrical outlet

What term describes the ability to use personal devices across a business or campus?

BYOD

Which statement describes an extended star topology?

End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.

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

What is an ISP?

It is an organization that enables individuals and businesses to connect to the internet

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 term describes a type of network used by people who work from home or from a small remote office?

SOHO network

A networking technician is working on the wireless network at a medical clinic. The technician accidentally sets up the wireless network so that the patients can see the medical records data of other patiends. Which of the four network characteristics has been violated in this situation?

Security

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 is a characteristsic of multicast messages?

They are sent to a select group of hosts

In the show running-config command, which part of the syntax is represented by running-config?

a keyword

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 MAC address added to a PDU during the encapsulation process?

data link layer

What process involves placing one PDU inside of another PDU?

encapsulation

What is contained in the trailer of a data-link frame?

error detection

Which command or key combination allows a user to return to the previous level in the command hierarchy?

exit

Refer to the graphic. What type of cabling is shows?

fiber

When data is encoded as pulses of light, which media is being used to transmit the data?

fire optic cable

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

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

What term describes a network where one computer can be both client and server?

peer-to-peer

Which name is assigned to the transport layer PDU?

segment

Which interface allows remote management of a Layer 2 switch?

the switch virtual interface

Why are two strands of fiber used for a single fiber optic connection?

they allow for full-duplex connectivity.

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 the purpose of the OSI physical layer?

transmitting bits across the local media

At which OSI layer is a source port number added to a PDU during the encapsulation process?

transport layer

what type of network traffic requires QoS?

video confrencing

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

(config)# service password-encryption

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three) -ARP -DHCP -DNS -FTP -NAT -PPP

-DHCP -DNS -FTP

What are three ways that media access control is used in networking? (Choose three.) -Ethernet utilized 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 different media -networks with controlled access have reduced performance due to data collisions

-Ethernet utilized 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

A web client is receiving a response for a web page from a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to decode the received transmission? -Ethernet, IP, TCP, HTTP -HTTP, TCP, IP, Ethernet -Ethernet, TCP, IP, HTTP -HTTP, Ethernet, IP, TCP

-Ethernet, IP, TCP, HTTP

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 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

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 the RAM -The contents of RAM are lost during a power cycle

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 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 destination

Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the models 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 two devices commonly affect wireless networks? (choose two) -blu-ray players -home theaters -cordless phones -microwaves -incandescent light bulbs -external hard drives

-cordless phones -microwaves

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 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

What are two characteristics of fiber-optic cable? (choose two) -it is not affected 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

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

Which statement is true about the CSMA/CD access method that is used in Ethernet?

All network devices must listen before transmitting.

scaleability

Expand the network without degrading the service for existing users.

Which of the following is the name for all computers connected to a network that participate directly in network communication?

Host

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

Security

Protect the network from unauthorized access

Fault tolerance

Provide redundant links and devices

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.

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

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 administrator must first enter privileged EXEC mode before issuing the command.

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

A network administrator enters the service passwor-encryption command into the configuration mode of a router. What does this command accomplish?

This commands prevents someone from viewing the running configuration passwords.

Refer to the graphic. What type of cabling is shown?

UTP

Which device performs the function of determining the path that messages should take through internetworks?

a router

What type of communication rule would best describe CSMA/CD?

access method

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

At which OSI layer is data added to a PDU during the encapsulation process?

application layer

A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?

bring your own device

What term describes a computing model where server software runs on dedicated computers?

client/server

What term describes storing personal files on servers over the internet to provide access anywhere, anytime, and on any device?

cloud

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

What term describes a network owned by one organization that provides safe and secure access to individuals who work for a different organization?

extranet

Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?

extranet

An administrator is configuring a switch console port with a password. In what order will the administrator travel through the IOS modes of operation in order to reach the mode in which the configuration commands will be entered?

first mode - user EXEC mode second mode - privileged EXEC mode third mode - global configuration mode final mode - line configuration mode

Which PDU format is used when bits are received from the network medium by the NIC of a host?

frame

Which media communication type does not require media arbitration in the data link layer?

full-duplex

DSL

high bandwidth connection that runs over telephone line

What layer is responsible for routing messages through an internetwork in the TCP/IP model?

internet

What term describes a private collection of LANSs and WANs that belongs to an organization?

intranet

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

lineconin

At which OSI layer is a destination IP address aded to a PDU during the encapsulation process?

network layer

At which OSI layer is a source IP address added to a PDU during the encapsulation process?

network layer

At which layer of the OSI model would a logical address be added during encapsulation?

network layer

satellite

not suited for heavily wooded areas

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

Which method allows a computer to react accordingly when it requests data from a server and the server takes too long to repond?

response timeout

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

During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer?

spyware

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 is the auto-MDIX feature on a switch?

the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection

With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

the magnetic field around the adjacent pairs of wire

Why would a Layer 2 switch need an IP address?

to enable the switch to be managed remotely

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

At which OSI layer is a destination port number added to a PDU during the encapsulation process?

transport layer

Which procedure is used to reduce the effect of crosstalk in copper cables?

twisting opposing circuit wire pairs together

dialup telephone

typically has very low bandwidth

cable

uses coaxial cable as a medium