Terms to know

Question 1

SOHO router

Answer 1

Small office/home office (SOHO) routers are a staple networking appliance for millions of consumers. They are often the single point of ingress and egress from a SOHO network, manage domain name resolution, firewall protections, dynamic addressing, wireless connectivity, and of course, routing.

Question 2

Dynamic ARP Inspection (DAI)

Answer 2

dedicated security mechanism that prevents ARP attacks by activating DHCP snooping

Question 3

router advertisement (RA) guard

Answer 3

In IPv6, a router periodically sends a special type of message to announce its presence on the network. A mechanism that allows to filter these messages

Question 4

BCP

Answer 4

business continuity planning (BCP) involves preparing for and avoiding potential disruptions to your business operations.

Question 5

MPLS

Answer 5

Multiprotocol Label Switching. Packets through the WAN have a label. Routing decisions are easy and faster.
WAN TECHNOLOGY.
Used for real time connections such as voice and video calls.

Question 6

OCSP

Answer 6

The Online Certificate Status Protocol (OCSP) is an alternative to the certificate revocation list (CRL) and is used to check whether a digital certificate is valid or if it has been revoked.

Question 7

three tier architecture

Answer 7

core-center of network
distribution- midpoint between access and core
access- where the users connect

Question 8

SDN

Answer 8

Software defined networking.
Networking devices have different functional planes of operation.
ex: infrastructure layer/data plane
control layer/ control plane
application layer/ management plane

Question 9

spine and leaf

Answer 9

each leaf switch connects to each spine switch.
Spine switches do not connect to each other.
leaf switches do not connect to each other.

Question 10

difference between nas and san

Answer 10

A NAS is a single storage device that serves files over Ethernet and is relatively inexpensive and easy to set up, while a SAN is a tightly coupled network of multiple devices that work with block-based data and is more expensive and complex to set up and manage.

Question 11

SCADA System

Answer 11

Supervisory Control and Data Acquisition System
Control industrial processes locally or at remote locations.

Question 12

DHCP snooping

Answer 12

drops DHCP traffic determined to be unacceptable

Question 13

oui

Answer 13

organizationally unique identifier. The manufacturer address.

Question 14

half duplex

Answer 14

a device cannot send and receive at same time. All LAN hubs are half duplex. Switch interfaces can be configured as half-duplex but only when connecting to another half duplex device.

Question 15

full duplex

Answer 15

data can be sent and received at same time. A properly configured switch interface will be set to full-duplex. A duplex mismatch occurs when one device is set to full and one is set to half.

Question 16

DAD

Answer 16

Duplicate Address Detection
Neighbor Discovery Protocol used by IPv6 that detects duplicate IPs.

Question 17

802.1Q

Answer 17

Vlan trunking, takes away the need for ethernet cable to connect vlans.

Question 18

jumbo frame

Answer 18

9000 byte payload. giant frame is frame more than 1500 is too large because no configuration. runt is frame smaller than 64 bytes.

Question 19

MIC

Answer 19

Message integrity check used by Hashing Algorithms. verify received data is identical to sent data.

Question 20

SAE

Answer 20

simultaneous authentication of equals used in WPA3-Personal. everyone has a different session key even with the same psk so that brute force attacks are rendered useless.

Question 21

Jitter

Answer 21

time between frames. excessive jitter can cause you to miss information, “choppy” voice calls.

Question 22

MIB

Answer 22

management information base. ITS WITHIN SIMPLE NETWORK MANAGEMENT PROTOCOL, monitors all network devices. object identifier units

Question 23

CRC

Answer 23

A cyclic redundancy check (CRC) is an ERROR DETECTING code commonly used in digital networks and storage devices to detect accidental changes to digital data.

Question 24

snmpv1
snmpv2
snmpv3

Answer 24

no security
more data option no security
very secure

Question 25

sla

Answer 25

costumers and service providers. service level agreement.

Question 26

mou

Answer 26

memorandum of understanding. both sides agree on the contents of the memorandum. informal letter of intent; not a signed contract

Question 27

MDF

Answer 27

main distribution frame. Connects inside to the outside. wan link termination point.

Question 28

idf

Answer 28

intermediate distribution frame. connects users to network. connects to the mdf.

Question 29

CIA

Answer 29

Confidentiality
Integrity
Availability

Question 30

PDU

Answer 30

protocol data unit,just means what layer of osi youre on and the respective data unit for that layer