N10-007.1

Question 1

What layers of the OSI model does QoS live on?

Answer 1

Layer 2 (Data Link) and Layer 3 (Network)

Question 2

What is split domain name system?

Answer 2

Split Domain Name System (Split DNS) is an implementation in which separate DNS servers are provided for internal and external networks as a means of security and privacy management.

https://www.techopedia.com/definition/1346/split-domain-name-system-split-dns

Question 3

What is DWDM?

Answer 3

Dense Wavelength Division Multiplexing, an optical technology used to increase bandwidth over existing fiber optic backbones.

More Explanation -> https://www.webopedia.com/TERM/D/DWDM.html

Question 4

What is TACACS+?

Answer 4

Uses TCP. TACACS+ is a protocol that handles authentication, authorization, and accounting (AAA) services

Question 5

What is DOCSIS?

Answer 5

Data Over Cable Service Interface Specification, or DOCSIS, is an international telecommunications standard that allows for the addition of high-bandwidth data transfer to an existing coaxial cable TV system. It allows Internet speeds to increase without having to completely replace coaxial cable networks.

Question 6

What is an autonomous system number?

Answer 6

A public AS has a globally unique number, an AS Number, associated with it. This number is used both in the exchange of exterior routing information (between neighboring Autonomous Systems) and as an identifier of the AS itself.

There are two types of AS Numbers:

Public AS Numbers
Private AS Numbers

Question 7

What is network utilization?

Answer 7

Network utilization is the ratio of current network traffic to the maximum traffic that the port can handle. Through monitoring network utilization, we can understand whether the network is busy, normal or idle.

Question 8

What protocol is designed to avoid loops on a layer 2 network?

Answer 8

802.1d (Spanning Tree Protocol)

Question 9

What do NAS and SAN use to encapsulate frames?

Answer 9

ISCSI

Question 10

What is ISCSI?

Answer 10

iSCSI is a transport layer protocol that describes how Small Computer System Interface (SCSI) packets should be transported over a TCP/IP network.

Question 11

What is SCSI?

Answer 11

Small Computer System Interface, is a set of American National Standards Institute (ANSI) standard electronic interfaces that allow personal computers (PCs) to communicate with peripheral hardware faster and more flexibly than previous parallel data transfer interfaces

Question 12

What is SIEM?

Answer 12

Security information and event management. SIEM software collects and aggregates log data generated throughout the organization’s technology infrastructure, from host systems and applications to network and security devices such as firewalls and antivirus filters.

Question 13

What does a non-persistent agent do?

Answer 13

This is a posture assessment software that doesn’t require that it be installed into the operating system. It starts up, it runs its process, checks the health of the system, and then it terminates and is no longer loaded on that particular device.

Question 14

What is a CSU?

Answer 14

The Channel Service Unit (CSU) receives and transmits signals from and to the WAN line and provides a barrier for electrical interference from either side of the unit.

Question 15

What is a switch?

Answer 15

A switch is a network device that connects network components. It uses MAC addresses to learn which devices reside off of which port.

Question 16

What is a client/server network?

Answer 16

In a client/server network, a dedicated server (for example, a file server or a print server) provides shared access to a resource (for example, files or a printer). Clients (for example, PCs) on the network with appropriate privilege levels can gain access to those shared resources.

Question 17

What is a partial mesh topology?

Answer 17

A hybrid of a hub-and-spoke topology and a full-mesh topology. A partial-mesh topology can be designed to provide an optimal route between selected sites, while avoiding the expense of interconnecting every site to every other site.

Question 18

What is current state modulation?

Answer 18

One way to electrically or optically represent a binary 1 or 0 is to use current state modulation, which represents a binary 1 with the presence of voltage (on a copper cable) or the presence of light (on a fiber-optic cable). Similarly, the absence of light or voltage represents a binary 0.

Question 19

What is state transition modulation?

Answer 19

Uses the transition between a voltage level (for example, going from a state of no voltage to a state of voltage, or vice versa, on a copper cable) or the transition of having light or no light on a fiber-optic cable to represent a binary 1. Similarly, a binary 0 is represented by having no transition in a voltage level or light level from one time period to the next.

Question 20

What are the 7 layers of the OSI model? (top to bottom)

Answer 20

Application, Presentation, Session, Transport, Network, Data-Link, Physical

Question 21

What are the four layers of the TCP/IP Stack? (top to bottom)

Answer 21

Application, Transport, Internet, Network Interface

Question 22

What is a content switch?

Answer 22

Can be used to load-balance requests for content across a group of servers containing that content. If one of the servers in the group needs to have maintenance performed, that server could be administratively removed from the group, as defined on the content switch.

Question 23

What is single-mode fiber?

Answer 23

SMF cabling has a core with a diameter large enough to permit only a single path for light pulses (that is, only one mode of propagation). By having a single path for light to travel, SMF eliminates the concern of multimode delay distortion.

Question 24

What is ANT+?

Answer 24

A wireless protocol for monitoring sensor data such as a person’s heart rate or a car’s tire pressure, as well as for controlling systems such as indoor lighting and television sets.

Question 25

What is a content engine?

Answer 25

A dedicated appliance whose role is to locally cache content received from a remote network (for example, a destination on the Internet).

Question 26

What is network as a service (NaaS)?

Answer 26

A service provider offering where clients can purchase data services (for example, email, LDAP, and DNS services) traditionally hosted in a corporate data center.

Question 27

What is software as a service (saas)?

Answer 27

Providing applications or application services via the cloud.

Question 28

What is platform as as service (paas)?

Answer 28

This category of cloud permits the delivery of operating systems and libraries needed by developers

Question 29

What is a software defined networking conroller?

Answer 29

Often referred to as the “brains” of the SDN network, this device sends commands to the network devices to have configurations made.

Question 30

Software Defined Networking (SDN)

Answer 30

An approach to computer networking that allows network administrators to programmatically initialize, control, change, and manage network behavior dynamically via open interfaces and provide abstraction of lower-level functionality.

Question 31

Multimode fiber (MMF)

Answer 31

Multimode fiber-optic cabling has a core with a diameter large enough to permit the injection of light at multiple angles. The different paths (that is, modes) that light travels can lead to multimode delay distortion, which causes bits to be received out of order because the pulses of light representing the bits traveled different paths (and therefore different distances).

Question 32

Proxy Server

Answer 32

Intercepts requests being sent from a client and forwards those requests on to their intended destination. The proxy server then sends any return traffic to the client that initiated the session. This provides address hiding for the client. Also, some proxy servers conserve WAN bandwidth by offering a content-caching function. In addition, some proxy servers offer URL filtering to, for example, block users from accessing social networking sites during working hours

Question 33

Z-wave

Answer 33

A wireless communications protocol used primarily for home automation.

Question 34

Infrastructure as a Service (IaaS)

Answer 34

Providing network infrastructure as a service using cloud technologies.

Question 35

Real-Time Transport Protocol (RTP)

Answer 35

A Layer 4 protocol that carries voice (and interactive video).