Comptia A+ 220-801 Chapter 7

Question 1

is a set of rules that govern communications, much like a language in human terms. pg 311

Answer 1

protocol

Question 2

is the most popular network protocol in use today, thanks mostly to the rise of the Internet. Pg 312

Answer 2

Transmission Control Protocol/Internet Protocol (TCP/IP) suite

Question 3

How many Layers does the DoD model have compared to the OSI Model? pg 312

Answer 3

four

Question 4

What are the 4 Layers of the DoD model? pg 312

Answer 4

Process/Application, Host to Host,internet,Network Access

Question 5

The majority of TCP/IP protocols on the DoD Model are located at which Layer? pg 313

Answer 5

Process/Application layer

Question 6

What are some of the protocols that are within the Process/Application layer? pg 313

Answer 6

Hypertext Transfer Protocol (HTTP)
File Transfer Protocol (FTP)
Simple Mail Transfer Protocol (SMTP)
Post Office Protocol (POP)

Question 7

Dynamic Host Configuration Protocol (DHCP) pg 314

Answer 7

dynamically assigns IP addresses and other IP configuration information to network clients.

Question 8

File Transfer Protocol (FTP) pg 314

Answer 8

is optimized to do what it says it does—transfer files. This

includes both uploading and downloading files from one host to another.

Question 9

What two things do you need to access the FTP Site? pg 314

Answer 9

legitimate login name and password

Question 10

What is the difference between HTTP and HTTPS? pg 315

Answer 10

HTTPS is a secure connection and HTTP isnt.

Question 11

What is a secure protocol designed to download email.pg 316

Answer 11

Internet Message Access Protocol (IMAP)

Question 12

is a directory services protocol based on the X.500 standard. pg 316

Answer 12

Lightweight Directory Access Protocol (LDAP)

Question 13

allows users to connect to remote computers and run programs on them. pg 316

Answer 13

Remote Desktop Protocol (RDP)

Question 14

Why would someone need to use RDP? pg 316

Answer 14

Remote Desktop mobile apps allows you to use the applications on your office computer, and access your data without being in your office. IT admins can use it to remote in from another location to perform IT functions from another location.

Question 15

Secure File Transfer Protocol (SFTP) pg 317

Answer 15

is used when you need to transfer files over a secure, encrypted connection.

Question 16

is another Microsoft-developed protocol. It’s used to provide shared access to files, printers, and other network resources. In a way, it functions a bit like
FTP only with a few more options. pg 317

Answer 16

Server Message Block (SMB)

Question 17

gathers and manages network performance

information. pg 317

Answer 17

Simple Network Management Protocol (SNMP)

Question 18

can be used to set up a secure Telnet session for remote logins or for remotely executing programs and transferring files.

Answer 18

Secure Shell (SSH)

Question 19

Which port Numbers does FTP use?

Answer 19

20,21

Question 20

What port number does HTTPS and HTTP use?

Answer 20

443,80

Question 21

Where can you find a complete list of registered port numbers?

Answer 21

www.iana.org

Question 22

An IPv4 address has how many bits in its hierarchical address that identifies a host on the network.

Answer 22

32-bit

Question 23

What are the two components that make up an IP Address? pg 322

Answer 23

the network ID and the host ID

Question 24

Computers are able to differentiate where the network ID ends and the host address begins through the use of a? pg 322

Answer 24

subnet mask.

Question 25

What type of business would use a Class A network?

Answer 25

Class A Class A networks are defined as those with the first bit set as 0 (decimal values from 0 to 127) and are designed for very large networks.

Question 26

What is the subnet mask of a Class B Network? pg 323

Answer 26

255.255.0.0

Question 27

Whats the difference between Static IP and Dynamic IP? pg 324

Answer 27

When a device is assigned a static IP address, it does not change. The device always has the same IP address. Most devices use dynamic IP addresses, which are assigned by the network when they connect. These IP addresses are temporary, and can change over time.

Question 28

is a TCP/IP standard used to automatically configure IP-based hosts that are unable to reach a DHCP server. pg 326

Answer 28

Automatic Private IP Addressing (APIPA)

Question 29

``` What is the first octet range in a class A network? pg 325 ```

Answer 29

1 to 126

Question 30

What is the first octet range in a class B network? pg 325

Answer 30

128 to 191

Question 31

What is the first octet range in a class C network? pg 325

Answer 31

192 to 223

Question 32

Private IP addresses will be in one of three ranges:

Answer 32

10.0.0.0/8, 172.16.0.0/16, or 192.168.0.0/16.

Question 33

what is Class E IPv4 used for and what is the First Octet Range?

Answer 33

Reserved for testing/240–255

Question 34

what is Class D IPv4 used for and what is the First Octet Range?

Answer 34

Reserved for multicast (sending messages to multiple systems) 224–239

Question 35

what is Class C IPv4 used for and what is the First Octet Range?

Answer 35

For smaller networks with fewer hosts/192–223

Question 36

what is Class B IPv4 used for and what is the First Octet Range

Answer 36

For medium-sized networks/128–191

Question 37

what is Class A IPv4 used for and what is the First Octet Range

Answer 37

For very large networks; 127 reserved for the loopback address/1–127

Question 38

What are Two critical TCP/IP services you need to be aware of ?

Answer 38

Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS).

Question 39

A DHCP server can be configured to automatically provide IP configuration information to clients. The following configuration information is typically provided:

Answer 39

IP address Subnet mask Default gateway (the “door” to the outside world) DNS server address

Question 40

Occasionally, you might visit a website that uses HTTPS and get a pop-up error message saying that the certificate has expired or could not be validated. This is most likely a case of the certificate legitimately expiring. What could be the issue with this warning?

Answer 40

certificate is expired or possibly a Trojan virus.