Exam 1

Question 1

What is multiplexing?

Answer 1

A transmission form allowing signals to travel simultaneously over one network media

Question 2

What is a NIC

Answer 2

The device that connects a computer to the network media

Question 3

What is a switch

Answer 3

A central network connection point that retransmits incoming data from one node only to the device to which the data is addressed

Question 4

What is the difference between base and and broadband

Answer 4

Baseband, digital signals that require exclusive use of wires capacity. Baseband can only transmit one signal at a time

Broadband, signals that use different frequency ranges, allowing more data to be transmitted than baseband.

Question 5

What is the MAC address?

Answer 5

The address of the NIC

Question 6

What is the demarc point?

Answer 6

The point where the signal is passed from the ISP equipment to the company’s equipment

Question 7

Describe star typology.

Answer 7

A network with a central connectivity device such as a switch or wireless access point.

Question 8

What is the DHCP?

Answer 8

An automated means of assigning unique IP address to every device on the network

Question 9

Name one function from the presentation layer of the OSI model.

Answer 9

Translation services, coding, file compression, encryption decryption

Question 10

When examining a TCP packet, what is the purpose of the port number?

Answer 10

To identify the protocol that must be used to process the packet

Question 11

The strength of electrical current is measured in

Answer 11

Volts

Question 12

Explain 3 differences between IPv4 and IPv6.

Answer 12

Many answers

Question 13

List three characteristics of Ethernet cable

Answer 13

Many answers

Question 14

What is DNS?

Answer 14

A hierarchical method of associating domain names with IP address. DNS servers are computers that contain databases of domain names and their associated IP address and provide this information upon request.

Question 15

Explain the difference between analog and digital signals.

Answer 15

With analog signals, voltage varies continuously and appears as a wavy line when graphed over time. Digital signals are composed of pulses of precise, positive and zero voltages.

Question 16

What is POE?

Answer 16

The ability to send electrical power to a device using Ethernet cable

Question 17

Name one function of the application layer of the OSI Model.

Answer 17

Services facilitate communication between software and lower-layer network services. Helps software applications negotiate formatting, procedural security, syncing, and other requirements with network.

Question 18

What is a punch down block?

Answer 18

The panel in the data closet that horizontal wiring is connected to

Question 19

List three characteristics of fiber optics

Answer 19

Many answers

Question 20

With regards to IPv6 , what is the difference between a global address and a local link address?

Answer 20

Global can connect to devices outside of the organization, local link can only connect to devices within the organization.

Question 21

What is a network node?

Answer 21

Any device that is connected to the network.

Question 22

List three types of wired network media

Answer 22

Coaxial cable, twisted pair, fiber optic

Question 23

Describe a bus topology

Answer 23

A network with a central cable to which all devices are attached

Question 24

What is network typology

Answer 24

The physical layout of a computer network

Question 25

What is UDP?

Answer 25

User datagram protocol, is used for live audio and video transmissions because it is faster then TCP.

Question 26

Name one function of the network layer of the OSI model

Answer 26

Translate network address into physical counterparts and decide how to route data from sender to receiver

Question 27

With regards to an analog signal, what is frequency?

Answer 27

The number of cycles per second witch one cycle being the voltage of the signal goes from one amplitude, up to the highest amplitude, down to the lowest amp, and back to the original amp.

Question 28

What is the decimal equivalent of 1101

Answer 28

13

Question 29

What is the primary function of Address Resolution Protocol?

Answer 29

Obtains the MAC address of the host and creates a database that maps MAC address to the host IP address

Question 30

What is a wireless access point?

Answer 30

a device that accepts signals from wireless nodes and retransmits them to the rest of the network.

Question 31

What is network noise?

Answer 31

Anything that can interfere with a transmission signal

Question 32

What is a dual stacked network?

Answer 32

A network where all the devices are capable of sending and receiving packets using their IPv6 or IPv4 address

Question 33

What are the differences between a peer-to-peer network and a client/server. Network?

Answer 33

A client-server network has a server that contains and provides most of the network resources. In a peer-to-peer network each device contains its own resource.

Question 34

What is the hexadecimal equivalent of 1101?

Answer 34

D

Question 35

What is the purpose of a network converter

Answer 35

To convert one type of signal to another type, (Ethernet, SMF, MMF)

Question 36

What is throughput?

Answer 36

The amount of data, measured in bits, transmitted during a given time period.

Question 37

What is a protocol?

Answer 37

A standard method or format for communication between networked devices

Question 38

What is a LAN segment?

Answer 38

All the devices connected to a single switch or wireless access point

Question 39

Name three type of network services

Answer 39

Web, email, remote access, file, print, management

Question 40

What is attenuation?

Answer 40

The weakening of the signal as it travels farther away from the sending device

Question 41

When discussing networks, hat is the backbone?

Answer 41

The part of the network to which segments and significant shared devices, such as routers ands switches, connect.

Question 42

What is bandwidth?

Answer 42

The theoretical maximum speed of the network

Question 43

What is IPv6 multicast address?

Answer 43

An address where the packet is delivered to all needs associated with that specific IPv6 address

Question 44

What is the IP address?

Answer 44

A unique 32-bit number that is divided into four octets separated by periods

Question 45

What is a router

Answer 45

A device that connects separate network segments and directs data to its destination network using the quickest available route

Question 46

What is the OSI model?

Answer 46

A theoretical representation of what happens between two nodes communicating on a network