Essential Terms and Components

Question 1

What is a set of devices, software and cables that enables the exchange of communication between the devices?

Answer 1

Networks

Question 2

What is a computer, server laptop tablet, smartphone or anything that a person uses to access the network?

Answer 2

End Device

Question 3

What are hubs, repeaters, bridges, switches, routers and firewalls?

Answer 3

Network Devices

Question 4

What describes the layout of a network?

Answer 4

Topology

Question 5

What topology is the connection of one device to another?

Answer 5

Point-to-Point

Question 6

What topology has one device that has multiple connections to other hosts?

Answer 6

Star

Question 7

What topology has devices connected in a circle?

Answer 7

Ring

Question 8

What topology uses one coaxial cable and connects multiple devices to it?

Answer 8

Bus

Question 9

What topology uses point-to-point to connect multiple locations to other locations?

Answer 9

Mesh

Question 10

What is a short-range, high-speed networks typically found in schools, offices and homes?

Answer 10

Local Area Network (LAN)

Question 11

What protocol is used to deal with ethernet collisions?

Answer 11

CSMA/CD

Question 12

What is a group of devices that are affected by one another’s collisions?

Answer 12

Collision Domain

Question 13

What means there are no collisions in a network because every segment has only one sender and receiver?

Answer 13

Microsegmented

Question 14

What type of network is used to connected two or more networks?

Answer 14

Wide Area Network (WAN)

Question 15

What type of WAN connection refers to a connection that is installed and provisioned for the exclusive use of the customer?

Answer 15

Dedicated Leased-Line Connection

Question 16

What type of WAN uses a phone company as the service provider?

Answer 16

Circuit-Switched Connection

Question 17

What type of WAN connects you to the provider;s network like a PC connects to a hub.

Answer 17

Packet-Switched Connection

Question 18

What Ethernet implementation is 10Mbs, half duplex, has max range of 500m and thicknet?

Answer 18

802.3/10BASE-5

Question 19

What Ethernet implementation is 10Mbs, half duplex, has max range of 185m and thinnet?

Answer 19

802.3/10BASE-2

Question 20

What Ethernet implementation is 10/100Mbs, half duplex, has max range of 100m and UTP?

Answer 20

802.3/10/100-BASE T

Question 21

What Ethernet implementation is 100Mbs, half/full duplex, has max range of 100m and UTP?

Answer 21

802.3u/100-BASE T

Question 22

What Ethernet implementation is 100Mbs, full duplex, has max range of 400m and multimode fiber optic?

Answer 22

802.3u/100-BASE FX

Question 23

What Ethernet implementation is 1000Mbs, full duplex, has max range of 100m and UTP?

Answer 23

802.3ab/1000-BASE T

Question 24

What Ethernet implementation is 1000Mbs, full duplex, has max range of 400m and single-mode fiber optic?

Answer 24

802.3z/1000-BASE ZX

Question 25

What are the 7 layers of the OSI model?

Answer 25

1. Application 2. Presentation 3. Session 4. Transport 5. Network 6. Data Link 7. Physical

Question 26

For TCP, what indicates how many segments can be sent before an ack will be sent?

Answer 26

Sliding Window

Question 27

What port and protocol does FTP use?

Answer 27

20 and 21; TCP

Question 28

What port and protocol does Telnet use?

Answer 28

23; TCP

Question 29

What port and protocol does SMTP use?

Answer 29

25; TCP

Question 30

What port and protocol does DNS use?

Answer 30

53; TCP and UDP

Question 31

What port and protocol does HTTP use?

Answer 31

80; TCP

Question 32

What port and protocol does POP use?

Answer 32

110; TCP

Question 33

What port and protocol does NNTP use?

Answer 33

119; TCP

Question 34

What port and protocol does HTTPS use?

Answer 34

443; TCP

Question 35

What port and protocol does DHCP use?

Answer 35

67 and 68; UDP

Question 36

What port and protocol does TFTP use?

Answer 36

69; UDP

Question 37

What port and protocol does NTP use?

Answer 37

123; UDP

Question 38

What port and protocol does SNMP use?

Answer 38

161; UDP

Question 39

What layer 3 protocol uses routable 32-bit addressing?

Answer 39

IP

Question 40

What layer 3 protocol incorporates ping and traceroute?

Answer 40

ICMP

Question 41

What layer 3 protocol is used to learn MAC address associated to a particular IP address

Answer 41

ARP

Question 42

What type of cable is used to connect other devices to a switch or hub?

Answer 42

Straight-Through Cable

Question 43

What type of cable is used to connect like devices together and routers to end devices?

Answer 43

Crossover Cable

Question 44

What is the default serial port encapsulation protocol?

Answer 44

HDLC

Question 45

What show command will display details about routers around you including the IP address?

Answer 45

show cdp neighbors detail

Question 46

What protocol has the tools PING and Traceroute?

Answer 46

ICMP (Internet Control Message Protocol)

Question 47

What protocol syncs the time settings of network devices?

Answer 47

NTP (Network Time Protocol)

Question 48

What protocol monitors network devices for conditions that require admin attention?

Answer 48

SNMP (Simple Network Management Protocol)

Question 49

What is the measure of a routes trustworthiness?

Answer 49

Administrative Distence

Question 50

What is the variable used to make decisions on which route to take?

Answer 50

Metric

Question 51

What is the formula for the OSPF cost metric?

Answer 51

100,000,000 / Bandwidth