ccna interfaces and hosts

routers, firewalls, switches, etc.

What do we call a digital telecommunications method that allows nodes to share resources?

computer network

Which device accesses a service made available by a server?

client

Which device provides functions or services for clients?

server

Which device aggregates connections to manage client communications?

switch

Which device forwards traffic within a LAN?

switch

Do switches provide connectivity between LANs?

no

Do switches provide connectivity to the Internet?

no

Which device provides connectivity between switches/hosts and the Internet?

router

Do routers provide connectivity between LANs?

yes

Can routers be used to send data over the Internet?

yes

Which device monitors and controls network traffic based on configured rules?

firewall

Can firewalls be placed outside of the router?

yes

Can firewalls be placed inside of the router?

yes

Do hosts sent information in bytes or bits?

bits

How many bits are in a byte?

8

Why do we measure speed in bits per second?

hosts can only send data one bit at a time

What standard did the IEEE set for Ethernet?

IEEE 802.3

What is the maximum length for all IEEE 802.3 standard Ethernet cables?

100m

What is the common name for 10 Mbps cables in the IEEE 802.3 standard?

Ethernet

What is the common name for 100 Mbps IEEE 802.3 standard cables?

Fast Ethernet

What is the common name for 1 Gbps IEEE 802.3 standard cables?

Gigabit Ethernet

What is the common name for 10 Gbps IEEE 802.3 standard cables?

10 Gig Ethernet

What is the informal name for 10 Mbps IEEE 802.3 standard cables?

10BASE-T

What is the informal name for 100 Mbps IEEE 802.3 standard cables?

100BASE-T

What is the informal name for 1 Gbps IEEE 802.3 standard cables?

1000BASE-T

What is the informal name for 10 Gbps IEEE 802.3 standard cables?

10GBASE-T

What does twisting cables prevent in UTP cables?

electromagnetic interference

What does UTP stand for?

unshielded twisted pair

What are twisted pair cables?

a pair of cables twisted together

What are unshielded cables susceptible to?

electrical interference

Do 10BASE-T cables use 4 or 8 wires?

4 wires

Do 10BASE-T cables use 2 or 4 pairs of wires?

2 pairs

Do 100BASE-T cables use 4 or 8 wires?

4 wires

Do 100BASE-T cables use 2 or 4 pairs of wires?

2 pairs

Do 1000BASE-T cables use 4 or 8 wires?

8 wires

Do 1000BASE-T cables use 2 or 4 pairs of wires?

4 pairs

Do 10GBASE-T cables use 4 or 8 wires?

8 wires

Do 10GBASE-T cables use 2 or 4 pairs of wires?

4 pairs

Do 10BASE-T and 100BASE-T use 4 or 8 pins?

4 pins

Do 1000BASE-T and 10GBASE-T use 4 or 8 pins?

8 pins

Which pins on a PC/router are used to transmit data via. a 10BASE-T or a 100BASE-T cable to a switch?

1 and 2

What label can we use to describe the transmission pins on a UTP cable diagram?

tx

Which pins on a switch are used to receive data from a PC/router using 10BASE-T or 100BASE-T cables?

1 and 2

Which pins are used by a switch to transmit data to a PC/router using 10BASE-T or 100BASE-T cables?

3 and 6

Which pins are used by a PC/router to receive data from a switch using 10BASE-T or 100BASE-T cables?

3 and 6

Which type of transmission separates wires used for transmission and reception on the same device, preventing data collision?

full-duplex transmission

Which type of cable has its wires identically aligned to the wires on the other end?

straight-through

What type of connector has 8 total pins for Ethernet connections?

RJ-45

Can we connect a router to another router/PC to another PC/switch to another switch/PC to another router using straight-through cables for 10/100BASE-T connections?

no

Which type of cable can we use to facilitate router-router/PC-PC/PC-router/switch-switch connections for 10/100BASE-T connections?

crossover

Which type of cable connects receiver pins to transmission pins, essentially reversing pair connections (1 to 3, 2 to 6, etc)

crossover

Which technology allows devices to detect which pins are receiving and transmitting data and adjusts its own transmission and reception pins?

Auto MDI-X

In 1000BASE-T AND 10GBASE-T cable pairs, is each pair dedicated specifically to transmission/reception?

no

What do we call cable connections that aren’t specifically dedicated to transmitting and receiving data?

bidirectional

How can 1000BASE-T and 10GBASE-T cables operate faster than 10BASE-T or 100BASE-T cables?

bidirectionality

What do you use to plug in fiber optic cables to routers or switches?

SFP transceivers

What does ‘SFP’ stand for in SFP transceiver?

small form factor pluggable

What do fiber optic cables use to send data, as opposed to copper wiring?

light pulses

Do fiber optic cables separate transmission and reception?

yes

Whose core diameter is larger: single-mode or multi-mode fiber optic cables?

Multimode

Which is more expensive: multimode or singlemode fibers?

singlemode

Why are singlemode optic cables more expensive?

SFP transmitters are expensive

What speed are 1000BASE-LX fiber optic cables?

1Gbps

Are 1000BASE-LX cables singlemode, multimode, or both?

both

What’s the maximum length of 1000BASE-LX cables?

550m

What speed are 10GBASE-SR cables?

10Gbps

Are 10GBASE-SR cables singlemode, multimode, or both?

multimode

What’s the maximum length of 10GBASE-SR cables?

400m

What’s the speed of 10GBASE-LR cables?

10Gbps

Are 10GBASE-LR cables singlemode, multimode, or both?

singlemode

What’s the maximum length of 10GBASE-LR cables?

10km

What’s the speed of 10GBASE-ER cables?

10Gbps

Are 10GBASE-ER cables singlemode, multimode, or both?

singlemode

What’s the maximum length of 10GBASE-ER cables?

30km

Are UTP or fiber-optic cables more expensive?

fiber-optic

Do UTP or fiber-optic cables have greater maximum distance?

fiber-optic

Are fiber-optic cables susceptible to EMI?

no

Are UTP cables susceptible to EMI?

yes

Are SFP or RJ45 ports cheaper?

RJ45