Ch. 4 - Network Protocols and Routing

Question 1

IP is a(n) ____ protocol

Answer 1

Connectionless

Question 2

IP depends on ____ to ensure messages are put back together in the right order and to ensure each message reaches the correct application on the receiving host

Answer 2

TCP (Transmission Control Protocol)

Question 3

____ is a Network layer, core protocol that reports on the success or failure of data delivery

Answer 3

ICMP (Internet Control Message Protocol)

Question 4

____ works in conjunction with ____ to discover the MAC address of a host or node on the local network

Answer 4

ARP (Address Resolution Protocol), IPv4

Question 5

Creates a frame around the payload

Answer 5

Ethernet

Question 6

Route Command on Cisco IOS

Answer 6

show ip route

Question 7

Display TCP/IP stats and details about components and connections on a host

Answer 7

netstat

Question 8

Lists current connections, including I P addresses and ports

Answer 8

netstat -n

Question 9

Displays routing table info

Answer 9

netstat -r

Question 10

A Windows utility that combines elements of both ping and tracert to provide deeper information about network issues along a route

Answer 10

Pathping

Question 11

A free, command-line packet sniffer that runs on Linux and other Unix OSes

Answer 11

tcpdump

Question 12

Queries DNS servers with more advanced options than nslookup

Answer 12

dig

Question 13

Detects, identifies, and monitors devices on a network

Answer 13

nmap

Question 14

Sends multiple pings to each hop along a route, then compiles the information into a single report

Answer 14

pathping (mtr on unix based oses)

Question 15

Used by core routers and edge routers within autonomous systems and are often grouped according to the algorithms they use to calculate best paths

Answer 15

IGP (interior gateway protocols)

Question 16

Used by edge routers and exterior routers to distribute data outside of autonomous systems

Answer 16

EGP (exterior gateway protocols)

Question 17

The only current EGP and is known as the “protocol of the Internet,” Can span multiple autonomous systems, Determines the best paths based on many different factors
Determines the best paths based on many different factors

Answer 17

BGP (Border Gateway Protocol)

Question 18

BGP uses ____ for communicating

Answer 18

TCP (Transmission Control Protocol)

Question 19

Use ICMP ECHO for probes

Answer 19

tracert -I

Question 20

Specifies interface for probes

Answer 20

tracert -i

Question 21

use TCP SYN for probes

Answer 21

tracert -t