CMAP 5

Question 1

PSTN

Answer 1

Public switched telephone network: national global telecoms network many types of internet connections use. Fiber optic but uses legacy two-pair copper cabling. POTS (plain old telephone system).

Question 2

DSL splitter

Answer 2

Seperates phone and data signals.
Connects to RJ11 phone interface and RJ-45 to modem and router.

Question 3

CATV (for cable modems)

Answer 3

Hybrid fiber coax (HFC) network that has a fiber optic core and wire coaxial cable links to customer.

Question 4

DOCSIS

Answer 4

(Data Over Cable Service Interface Specification): supports downlink speeds to 38Mb (NA) 50Mb (EU) and uplinks 37Mb. Version 3 allows multiplexing for higher bandwidth

Question 5

WISP

Answer 5

Wireless internet service provider: ground-based long-range fixed access wireless technology. directional antenna to work as a bridge to ISP network. can experience interference from other wireless networks

Question 6

cellular radio

Answer 6

wireless networking facilitates communications over much larger distances.

Question 7

3G

Answer 7

connection to closest station and its corresponding location within a range of 5 miles is a cell. obstructed by building materials, and work in 850 and 1900 MHz frequency bands
50-400Kbps

Question 8

Global system for Mobile Communication (GSM)

Answer 8

3G introduced SIM cards (subscriber identity module) to unlock handset with provider

Question 9

Code Division Multiple Access (CDMA)

Answer 9

handset managed by provider and no SIM cards

Question 10

UMTS

Answer 10

Universal Mobile Telecommunication Service: found on 3G GSM handset or Evolution-Data Optimized (EV-DO) on CMDA networks for 3MB speeds

Question 11

H/H+ or HSPA

Answer 11

High Speed Packet Access: improves data rates of GSM to 42Mb

Question 12

4G

Answer 12

Long-Term Evolution (LTE) converged 4G standards supporting GSM & CDMA. issued a SIM card

Question 13

5G

Answer 13

Uses different spectrum bands low (sub-6 GHz): better for range and penetrating power. medium/high (20-60GHz): milimeterWave, requires close range and non obstructed LOS.

Using a large and many small antenna for wide area cell and multi-path and beam forming. (massive MIMO)

Question 14

internet protocol

Answer 14

IP: provides network and host addressing, and packet forwarding between networks.

Question 15

ARP

Answer 15

address resolution protocol: table storing mac address connected to their IP addresses. used if ANDing determine IP address on same network or when adding entries from ARP requests

Question 16

NAT

Answer 16

network address translation: converts private IPs into a public IP.

Question 17

APIPA

Answer 17

automatic private IP addressing: when DHCP server unreachable, the address - 169.254. 0.1-255.254 /16 is used. Can communicate between devices on the same network using APIPA but not other networks or DHCP assigned hosts.

Question 18

TCP ports

Answer 18

each network application is assigned a port based on the data type. range 0 - 65,535. host are assign a src port and their data it encapsulated with a destination port.

Question 19

Port 80

Answer 19

HTTP protocol

Question 20

Port 25

Answer 20

Simple Mail Transfer Protocol (SMTP): TCP

Question 21

Port 20

Answer 21

File Transfer Protocol: TCP - Data connection

Question 22

21

Answer 22

File Transfer Protocol: TCP - Control connection

Question 23

22

Answer 23

Secure Shell (SSH): TCP

Question 24

53

Answer 24

Domain Name System (DNS): TCP/UDP

Question 25

67

Answer 25

DHCP server: TCP/UDP

Question 26

68

Answer 26

DHCP Client: UDP

Question 27

110

Answer 27

Post Office Protocol (POP): TCP

Question 28

137-139

Answer 28

NetBIOS TCP/IP: UDP/TCP

Question 29

143

Answer 29

Internet Mail Access Protocol (IMAP): TCP

Question 30

161

Answer 30

Simple Network Management Protocol (SNMP): UDP

Question 31

162

Answer 31

SNMP (simple network management protocol) Trap Operation: UDP

Question 32

389

Answer 32

Lightweight Directory Access Protocol (LDAP): TCP

Question 33

443

Answer 33

HTTP secure (HTTPS): TCP

Question 34

445

Answer 34

Server Message Block(SMB): TCP

Question 35

3389

Answer 35

Remote Desktop Protocol (RDP): TCP

Question 36

Connection-Oriented protocol

Answer 36

TCP protocol ensuring connection reliability.

Question 37

What does TCP connection oriented protocol preform

Answer 37

1.) Handshake sequence (SYN, SYN/ACK, ACK) packets. 2.) Assigns each packet a sequence number for tracking. 3.) Allows ACK when received packet. 4.) Can sent Negative ACK (NACK) when missing packet. 5.) Allows graceful termination.

Question 38

scope

Answer 38

Range of addresses which DHCP can offer in a subnet.

Question 39

FQDN

Answer 39

fully qualified domain name: combination of hostname, domain-name, and suffix. ex nut.widget.example ('nut' if device hostname,'widget.example' is the domain suffix. 'widget' is the domain name, 'example' is the suffix [top-level domain: TLD])

Question 40

Resource records

Answer 40

file storing DNS zone. 'A'-maps hostnames for IPv4, 'AAAA'-IPv6, 'CNAME'-hostname alias, 'PTR'-hostnames can be identified from IP address.

Question 41

Mail Exchanger (MX) record

Answer 41

identify email servers for domain so other servers can send messages to it. the hostname must have an A or AAAA record

Question 42

TXT record

Answer 42

record for string free-form values. verifies email services and blocks spoofed/unwanted messages (spam)

Question 43

SPF (sender policy framework)

Answer 43

a TXT record published via DNS that verifies hosts and their authority to send email from the domain. can indicate also what to do with mail- reject, flag, or accept all

Question 44

DKIM (domainkeys identified mail)

Answer 44

uses cryptography - uploaded to a DNS server as a TXT record called a public key to validate message derives from authentic server.

Question 45

DMARC (domain-based message authentication, reporting, and conformance)

Answer 45

a policy published a TXT, that can you either or both DKIM and SPF. specifies a policy how failures should be treated, and reports authentication failures to senders.

Question 46

VLAN

Answer 46

virtual LAN that splits its original broadcast domain into smaller ones. Communication is separate even if on the same switch, and must go through the IP router and provisioned its own DHCP and DNS services.