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CCNA 200-301 Exam/432 Questions and answers
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CCNA 200-301 Exam/432 Questions and answers
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CCNA 200-301 Exam/432Questions and answers
AAA - -Authentication, authorization and accounting
-AAA Server - -Server providing authentication, authorization and
accounting services
-Access Control Entry (ACE) - -One line in an access control list (ACL)
-access interface - -A LAN network design term that refers to a switch
interface connected to end-user devices
-access layer - -In a Campus LAN design, the switches that connect directly
to end-point devices
-access link (WAN) - -A physical link between a service provider and its
customer
-access rate - -The speed at which bits are sent over an access link
-accounting - -In security, the recording of access attempts
-ACI - -Application Centric Infrastructure
-ACL - -Access Control List
-Active Directory - -A popular set of identity and directory services from
Microsoft, used in part to authenticate users
-administrative distance - -In Cisco routers, a means for one router to
choose between multiple routes to reach the same subnet when those routes
are learned by different routing protocols.
-agent - -Generally, an additional software process or component running in
a computing device for some specific purpose
-agent-based architecture - -An architecture that uses a software agent
inside the device being managed
-agentless architecture - -An architecture that does not need a software
agent
, -amplification attack - -A reflection attack that leverages a service on the
reflector to generate and reflect huge volumes of reply traffic to the victim
-Ansible - -A popular configuration management application
-Ansible inventory - -Device host names along with information about each
device
-Ansible playbook - -Files with actions and logic about what Ansible should
do
-anti-replay - -Preventing a man in the middle from copying and later
replaying the packets sent by a legitimate user, for the purpose of appearing
to be a legitimate user
-antivirus - -Software that monitors files transferred by any means, to look
for content that can be used to place a virus into the computer
-APIC - -Application Policy Infrastructure Controller
-APIC-EM - -Application Policy Infrastructure Controller -Enterprise Module
-Application Centric Infrastructure (ACI) - -Cisco's data center SDN solution
-Application Policy Infrastructure Controller - Enterprise Module (APIC-EM) - -
The software that plays the role of controller in an enterprise network of
Cisco devices
-application programming interface (API) - -A software mechanism that
enables software components to communicate with each other
-application signature - -With Network Based Application Recognition
(NBAR), the definition of a combination of matchable fields that identify as
characteristics of a specific application
-Application Visibility and Control (AVC) - -A firewall device with advance
features (IPS, malware detection, VPN termination, etc.)
-application-specific integrated circuit (ASIC) - -An integrated circuit (chip)
designed for a specific purpose of application.
-AR - -Access Rate
-ARP - -Address Resolution Protocol. An internet protocol used to map an IP
address to a MAC address
, -ARP ACL - -A configuration feature on Cisco LAN switches that define MAC
and IP that will be filtered
-ARP Reply - -An ARP message used to supply information about an ARP
request. A device providing its MAC address in reply to a request
-ARP Request - -An ARP message used to request information from another
host located on the same subnet or broadcast domain
-ARP Table - -A list of IP addresses of neighbors on the same VLAN, along
with their MAC addresses
-ASAv - -A Cisco ASA firewall software image that runs as a virtual machine
rather than on hardware
-ASIC - -Application Specific Integrated Circuit
-authentication - -In security, the verification of the identity of a person,
device or process
-Authoritative DNS server - -The DNS server with the record that lists the
address that corresponds to a domain name (A Record) for that domain
-authorization - -In security, the determination of the rights allowed for a
particular user or device
-autonomous system (AS) - -An internetwork that is managed by one
organization
-autonomous system number (ASN) - -A number used by BGP to identify a
routing domain, often a single enterprise or organization.
-AutoQoS - -In Cisco switches and routers, an IOS feature that configures a
variety of QoS features with useful settings as defined by design guides
-bandwidth - -The speed at which bits can be sent and received over a link
-bandwidth profile - -In MetroEthernet, a contractual definition of the
amount of traffic that the customer can send into the service and receive out
of the service
-Brownfield - -A term that refers to the choice to add new configuration to
hardware and software that are already in use, rather than adding new
hardware and software specifically for a new project
, -brute-force attack - -An attack where a malicious user runs software that
tries every possible combination of letters, numbers and special characters
to guess a user's password
-buffer overflow attack - -An attack meant to exploit a vulnerability in
processing inbound traffic such that the target system's buffers overflow, the
target system can end up crashing or inadvertently running malicious code
injected by the attacker
-cable internet - -An internet access technology that uses a cable TV
(CATV), normally used for video, to send and receive data
-cacheable - -For resources that might be repeatedly requested over time,
an attribute that means that the requesting host can keep in storage (cache)
a copy of the resource for a specified amount of time
-carrier Ethernet - -A WAN service that uses Ethernet links as the access
link between the customer and the service provider
-CDP - -Cisco Discrovery Protocol. A media- and protocol-independent
device-discovery protocol that runs on most Cisco-manufactured equipment,
including routers, access servers, and switches. Using CDP, a device can
advertise its existence to other devices and receive information about other
devices on the same LAN or on the remote side of a WAN
-CDP neighbor - -A device on the other end of some communications cable
that is advertising CDP updates
-central office (CO) - -A term used by telcos to refer to a building that holds
switching equipment, into which the telco's cable plant runs so that the telco
has cabling from each home and business into the building
-centralized control plane - -An approach to architecting network protocols
and products that places the control plane functions into a centralized
function rather than distributing the function across the networking device
-Chef - -A popular configuration management application, which uses a
server and a pull model with in-device agents
-Chef client - -Any device whose configuration is being managed by Chef
-Chef Cookbook - -A set of recipes about the same kinds of work, grouped
together for easier management and sharing
-Cisco Access Control Server (ACS) - -A legacy Cisco product that acts as a
AAA Server
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