Network Fundamentals

Question 1

Address fields in a 802.11 data frame

Answer 1

Three

Question 2

Platform as a Service (PaaS)

Answer 2

Enables a consumer to use the service provider’s development tools or APIs to develop and deploy specific cloud-based applications or services

Question 3

Software as a Service (SaaS)

Answer 3

Enables its consumer to access applications running in the cloud infrastructure but does not enable the consumer to manage the cloud infrasctructure or the configuration of the provided applications

Question 4

IaaS

Answer 4

Provides the greatest degree of freedom by enabling its consumer to provision processing, memory, storage and networks resources within the cloud infrastructure. Allows its consumer to install applications, including OSs and custom applications

Question 5

Late Collision

Answer 5

Ethernet collision that occurs after 512 bits of a frame have already been transmitted. An ethernet cable that is too long might create them, or a duplex mismatch

Question 6

Baby Giant Frame

Answer 6

Is a frame that is up to 1.600 bytes in length. It can occurs if you use Q-in-Q encapsulation, Multiprotocol Label Switching (MPLS) or any other feature that adds to the size of an Ethernet frame

Question 7

Giant Frame

Answer 7

Ethernet frame that exceeds 1.518 bytes and has a bad Frame Check Sequence (FCS)

Question 8

Jumbo frame

Answer 8

Is a frame that is up to 9.216 bytes in lenght

Question 9

Runt frame

Answer 9

Is a frame that is fewer than 64 bytes and has a bad FCS value

Question 10

UniDirectional Link Detection (UDLD)

Answer 10

Is designed to determine whether a communication link is occurring in only one direction. Unidirectional links can result in switching loops if the SW doesn’t know that the link is unidirectional

Question 11

IPSec

Answer 11

Internet Protocol Security provides data confidentiality, data integrity and origin authentication. IPSec uses Encapsulating Security Protocol (ESP) to provide data confidentiality. In addition, it uses Authentication Header to ensure the integrity and authenticate the origin of a packet

Question 12

Cisco Application Centric Infrastructure ACI

Answer 12

Is a data center technology that uses switches, categorized as spine and leaf nodes to dynamically implement network application policies in response to application-level requirements

Question 13

Application Policy Infrastructure Controller APIC

Answer 13

Is the single point of policy and management of a Cisco ACI fabric which is only used to configure the policy. The policy is then delivered and instantiated on each of the nodes in the network

Question 14

ACI Endpoint Groups (EPGs)

Answer 14

Provide a new model for mapping applications to the network acting as a container for collections applications or application components and tiers that can be used to apply forwarding and policy logic