Extra Questions 2

Question 1

What is the wiring order for the 568A standard?

Answer 1

Green White
Green
Yellow White
Blue
Blue White
Yellow
Brown White
Brown

Question 2

What is the wiring order for the 568B standard?

Answer 2

Yellow
Brown White
Yellow White
Blue
Green White
Blue White
Green
Brown

Question 3

What are the AD Values for BGP (external), EIGRP (internal), IGRP, OSPF, ISIS, RIP, EIGRP (external), BGP (internal), DHCP default route

Answer 3

BGP (external): 20
EIGRP (internal): 90
IGRP: 100
OSPF: 110
ISIS: 115
RIP: 120
EIGRP (external): 170
BGP (internal): 200
DHCP default route: 254
Unknown/Unusable: 255

Question 4

How to memorized the looks of LC, MTRJ, SC & ST connectors?

Answer 4

LC: Has a clip like a CAT cable.
MTRJ: Doesnt have the typical outstanding white tip
SC: Square shape with a round white tip
ST: Round with a stick shaped white tip

Question 5

How to connect to a specific port using telnet?

Answer 5

telnet {IP} {Port}

Question 6

Whats the difference between netstat with and without the -a flag?

Answer 6

Netstat with the -a flag also shows the Listening connections.

Question 7

What are the most important tcpdump flags & whats special? (5)

Answer 7

tcpdump needs to be run as sudo, to put the interface into promisc mode.

-w {Filename}: Writes to a PCAP file
-r {Filename}: read a file
-i {Interface}: choose an interface
src {IP}: will only show traffic from that ip
-x: put at the end to see packet contents in hex and ASCII

Question 8

What are open pairs, reverse pairs, cross pairs, and split pairs?

Answer 8

open pairs: One or both wires of a pair are disconnected at one end
reverse pairs: The wires in a pair are connected to the opposite pin
cross pairs: Both wires of one color pair are connnected to the pins of a different color pair.
split pairs: A wire from one pair crosses the wire from another pair, but the pins are correct.

Question 9

What are TAPs (Test Access Points)?

Answer 9

TAPs connect directly to cable infrastructure and split or copy packets for analysis, security, or network management. TAPs must be appropriate for the network type, whether copper or fiber.

Question 10

What does a TTL of 1 on a packet mean?

Answer 10

It means the packet can only travel one router hop before being discarded, that means the packet is for a host on the local area network.

Question 11

What is a switch backplane?

Answer 11

A switch backplane is the high-speed internal data pathway (bus or fabric) that interconnects all the ports on a network switch.

You can think of it as the “internal highway” that packets travel through when the switch forwards data from one port to another.

Question 12

What Authentication method provides accounting, authorization, and authentication via a centralized privileged database, as well as challenge/response and password encryption?

Answer 12

TACACS+

Question 13

What does SSO use to allow the login across multiple systems?

Answer 13

SAML

Question 14

What does TLS provide?

Answer 14

Confidentiality, Integrity & Authentication

Question 15

What is the purpose of the VXLAN Network Identifier (VNI)

Answer 15

Its used to differentiate between different VXLAN overlay networks.

Question 16

What to do to reduce latency when accessing cloud based or other off premise ressources?

Answer 16

Check if the configured routes are efficient.

Question 17

What are the unique identifiers used to manage routing prefix assignments?

Answer 17

Autonomous System Numbers