CISCO Exam 4

Question 1

Subnetting Information

Answer 1

fu = n + 1
br = n2 - 1
lu = br - 1

subnet: 1 2 4
host: 256 128 64
mask: 24 25 26

Question for Stokes: How many subnets for 2 hosts?

Question 2

Broadcast Domain

Answer 2

Interface that Routers send broadcasts to

Question 3

anycast

Answer 3

multiple devices with same address. Sent to closest device.

Question 4

What are GUAs?

Answer 4

ipv6 public addresses

Global Routing Prefix ~ provider assigned
Subnet/Interface ID ~ identifies subnet and host

Question 5

Local Link Address

Answer 5

Communication on same link/subnet. FE80::

all ipv6 need LLA.

Question 6

Unique Local Address

Answer 6

FC00 – FDFF

communication of nodes on different links/subnets

Question 7

RS
RA

Answer 7

hosts ask router for addressing
router sends to host nodes

Question 8

How are Local Link Addresses Configured?

Answer 8

1. EUI-64 ~ adds bits to mac address
2. Random interface ID

Question 9

How are GUAs dynamically configured

Answer 9

1. SLAAC ~ everything
2. SLAAC Stateless ~ some from dhcp
3. Stateful ~ everything from dhcp but default gateway

Question 10

How to verify ipv6 address?

Answer 10

show ipv6 route
show ipv6 interface brief

Question 11

ipv6 multicast address types

Answer 11

well known

solicited node

Question 12

What are the two common IPv6 assigned multicast groups?

Answer 12

FF02::1 – All nodes
FF02::2 – All routers

Question 13

ICMP

Answer 13

Internet Control Message Protocol

Question 14

Traceroute

Answer 14

Gives path that packet hopped on

Question 15

DAD

Answer 15

Detects Duplicate Addresses

(Duplicate Address Detection)

Question 16

Transport Layer Protocols

Answer 16

TCP (Slow and Thorough)
-Large Header

UDP (Fast and Sloppy)
-Small Header

Question 17

Port Numbers

Answer 17

Identify application in system

Question 18

Socket Pair

Answer 18

Pair of source and destination port/ip addresses.

Question 19

Port Group

Answer 19

1023
49151
65000

Question 20

Legacy Classful Addressing

Answer 20

127
191
223
239
254

Question 21

netstat

Answer 21

Lists protocols in use

Question 22

TCP Flow Controls

Answer 22

Window Size ~ Determines the number of bytes that can be sent before expecting an
acknowledgement

Segment Size

Congestion Control ~ Limits data sent if not receiving acknowledgment

Question 23

RST

Answer 23

Reset Connection

Question 24

Presentation Layer

Answer 24

Presents data properly

Question 25

Application Layer

Answer 25

Communicates between application and network

Question 26

Session Layer

Answer 26

Keeps information exchange active

Question 27

P2P network

Answer 27

two devices share info without server

Question 28

P2P application

Answer 28

two devices both each clients and servers

Question 29

HTTP message types

Answer 29

Get ~ Client Request Data
Post + Put ~ Upload Data to Server

Question 30

SMTP

Answer 30

Sending Email Protocol

Question 31

Internet Message Access Protocol

Answer 31

retrieves emails and does not delete after retrieval.

Question 32

POP

Answer 32

retrieves emails and deletes after retrieval

Question 33

DNS

Answer 33

Converts ip to recognizable names

A ~ ipv4 address
AAAA ~ ipv6 address
NS ~ name server
MX ~ mail record

Question 34

Requesting ipv6 from DHCP Process

Answer 34

Discover
Offer
Request
Pack ~ DHCP aknowledges user will use info

DORP

Question 35

Virus + Worm + Trojan Horse Difference

Answer 35

They are types of malware

Virus = Evil File Spread
Worm = Itself Spread
Trojan Horse = User Spread

Question 36

AAA

Answer 36

Controls who has access to network, record of all activity.

Question 37

Firewalls

Answer 37

In between networks and filter traffic

Question 38

End point security

Answer 38

Making sure employees don’t leak

Question 39

DMZ

Answer 39

Outsiders can access some of internal network

Question 40

Access Attacks

Answer 40

Manipulate Device