CNT 101

which connection physically connects the end device to the network?

NIC (network interface card)

with which type of policy, a router can manage the flow of data and voice traffic, giving priority to voice communications if the network experiences congestion?

QoS (quality of service)

which of the following counters EMI and RFI by using shielding techniques and special connectors?

STP (spanning tree protocol)

which of the following wireless standards is used for personal area networks (PANs) and allows devices to communicate over distances of 1 to 100 meters?

bluetooth

true or false. wireless LANs operate in full-duplex allowing all devices to send or receive data at the same time so the number of users does not impact performance

false

true or false. wireless is not well suited for enterprise networks.

false

which of the following fiber-optic cable types is used with a campus network?

multimode

which type of network topology lets you see the actual location of intermediary devices?

physical topology

which of the following fiber-optic cable types can travel approximately 62.5 miles or 100 km/100000 m?

single-mode

which of the following fiber-optic cable types used to connect long-distance telephony and cable TV applications?

single-mode

which of the following fiber-optic cable types uses lasers in a single stream as a data light source transmitter?

single-mode

which of the following wireless standards is best suited for industrial and IoT environments?

zigbee

which protocol stack layer encapsulates data into frames?

data link

which logical address is used for delivery of data to a remote network?

destination IP address

what types of standards are developed by the EIA (electronics industries alliance)?

electric wiring and connectors

which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in?

CTRL+z and end

which three acronyms/initialisms represent standards organizations?

IANA & IEEE & IETF

this standards organization is responsible for IP address allocation and domain name management.

IANA (internet assigned numbers authority)

which two protocols function at the internet layer?

ICMP and IP

which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery?

ICMPv4 and ICMPv6

this standards organizations is concerned with the request for comments (RCF) documents that specify new protocols and update existing ones.

IETF (internet engineering task force)

a device receives a data link frame with data and processes and removes the ethernet information. what information would be the next to be processed by the receiving device?

IP at the internet layer

this protocol is responsible for guaranteeing the reliable delivery of information

TCP (transmission control protocol)

which network infrastructure provides access to other networks over a large geographical area, which is ofter owned and managed by a telecommunications service provider?

WAN (wide area network)

the physical layer of the receiving device passes bits up to which higher level layer?

data link

what process is used to receive transmitted data and convert it into a readable message?

decoding

what is the order of the addresses in the data link frame?

destination MAC, source MAC

what is the structure of an IPv4 address called?

dotted-decimal format

how is the privileged EXEC mode access secured on a switch?

enable secret class

what is the name of the process of adding protocol information to data as it moves down the protocol stack?

encapsulation

what process is used to place one message inside another message for transfer from the source to the destination?

encapsulation

what is the process of converting information into the proper form for transmission?

encoding

which protocol operates at the network access layer of the TCP/IP model?

ethernet

which network infrastructure might an organization use to provide secure and safe access to individuals who work for a different organization but require access to the organization's data?

extranet

true or false? data link addresses are physical so they never change in the data link frame from source to destination.

false

true or false? the physical layer is only concerned with wired network connections

false

true or false? the right-most part of an IP address is used to identify the network that a device belongs to

false

true or false? when a frame is encoded by the physical layer, all bits are sent over the media at the same time

false

having multiple paths to a destination is known as redundancy. this is an example of which characteristic of network architecture?

fault tolerance

which media uses patterns of light to represent bits?

fiber-optic

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

fiber-optic cable

which option blocks unauthorized access to your network?

firewall

which three are components of message timing?

flow control, access control, and response timeout

which step of the communication process is concerned with properly identifying the address of the sender and receiver?

formatting

how is an IPv4 address represented?

four decimal numbers between 0 and 255 separated by periods

what PDU is received by the physical layer for encoding and transmission?

frame

which IOS mode are you in if the switch(config)# prompt is displayed?

global configuration mode

what is the command to assign the name "sw-floor-2" to a switch ?

hostname sw-floor-2

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

hosts

which connections are specialized ports on a networking device that connect to individual networks?

interface

which statement is true about the running configuration file in a cisco IOS device?

it affects the operation of the device immediately when modified

what are two benefits of using a layered network model?

it assists in protocol design and it prevents technology at one layer from affecting other layers

what is done to an IP packet before it is transmitted over the physical medium?

it is encapsulated in a layer 2 frame

which type of network topology lets you see which end devices are connected to which intermediary devices and what media is being used?

logical topology

which command enables password authentication for user EXEC access on a switch?

login

which delivery method is used to transmit information to one or more end devices, but not all devices on the network?

multicast

which type of communication will send a message to a group of host destinations simultaneously?

multicast

which of the following fiber-optic cable types can help data travel approximately 1.24 miles or 2 km/2000 m?

multimode

which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?

multimode

which of the following statements are true regarding network layer and data link layer addresses?

network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits, data link layer addresses are physical and network layer addresses are logical, network layer addresses are either 32 or 128 bits in length

which access method would be the most appropriate if you call your manager and tell him you cannot access your router in another city over the internet and he provides you with the information to access the router through a telephone connection?

AUX

which feature describes using personal tools to access information and communicate across a business or campus network?

BYOD (bring ya own device)

which two protocols are service discovery protocols?

DNS and DHCP

which two protocols belong in the TCP/IP model application layer?

DNS and DHCP

which attack slows down or crashes equipment and programs?

DoS (denial of service)

a web client is sending a request for a webpage to a web server. from the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission?

HTTP & TCP & IP & ethernet

which network infrastructure provides access to users and end devices in a small geographical area, which is typically a network in a department in an enterprise, a home, or small business?

LAN (local area network)

what type of interface has no physical port associated with it?

SVI (switch virtual interface)

which media uses electrical pulses to represent bits?

copper

which of the following is the most common network media?

UTP (unshielded twisted pair)

which option creates a secure connection for remote workers?

VPN (virtual private networks)

which of these is the name for the capacity of a medium to carry data?

bandwidth

which is the command to configure a banner to be displayed when connecting to a switch?

banner motd $ keep out $

what type of communication will send a message to all devices on a local are network?

broadcast

which message delivery option is used when all devices need to receive the same message simultaneously?

broadcast

which feature contains options such as public, private, custom and hybrid?

cloud computing

which of the following attaches antennas to wireless devices? it can also be bundled with fiber-optic cabling for two-way data transmission

coaxial

which of the following terminates with BNC, N type and F type connectors?

coaxial

which access method would be the most appropriate if your manager gave you a special cable and told you to use it to configure the switch?

console

which access method would be the most appropriate of you were in the equipment room with a new switch that needs to be configured?

console

which feature is being used when connecting a device to the network using an electrical outlet?

powerline

which type of access is secured on a cisco router or switch with the enable secret command?

privileged EXEC

which IOS mode allows access to all commands and features?

privileged EXEC mode

what is the general term that is used to describe a piece of data at any layer of a networking model?

protocol data unit

what is the purpose of protocols in data communications?

providing the rules required for a specific type of communication to occur

which 2 devices are intermediary devices?

routers and switches

BGP and OSPF are examples of which type of protocol?

routing

which services are provided by the internet layer of the TCP/IP protocol suite?

routing protocols, messaging, internet protocol

when designers follow accepted standards and protocols, which of the four basic characteristics of network architecture is achieved?

scalability

confidentiality, integrity, and availability are requirements of which of the four basic characteristics of network architecture?

security

what is the PDU associated with the transport layer?

segment

what is the process of dividing a large data stream into smaller pieces prior to transmission?

segmentation

which command encrypts all plaintext passwords access on a switch?

service password encryption

what is used to determine the network portion of an IPv4 address?

subnet mask

which access method would be most appropriate in-band access to the IOS over a network connection?

telnet/SSH

which two statements are true regarding the user EXEC mode?

the device prompt for this mode ends with the ">" symbol and only some aspects of the router configuration can be viewed

which of these is a measure of the transfer of bits across the media?

throughput

in computer communication, what is the purpose of message encoding?

to convert information to the appropriate form for transmission

what is the purpose of the sequencing function in network communication?

to uniquely label transmitted segments of data for proper reassembly by the receiver

UDP and TCP belong to which layer of the TCP/IP protocol?

transport

which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?

transport

true or false. standards organizations are usually vendor-neutral.

true

true or false? frames exchanged between devices in different IP networks must be forwarded to a default gateway

true

which IOS mode are you in if the switch> prompt is displayed?

user EXEC mode

which feature is a good conferencing tool to use with others who are located elsewhere in your city, or even in another country?

video communications

which option describes malicious code running on user devices?

virus, worm, or trojan horse

which media uses patterns of microwaves to represent bits?

wireless

which feature uses the same cellular technology as a smart phone?

wireless broadband