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A+ Review > Net+ Review > Flashcards

Net+ Review Flashcards

1
Q

Class and IP address ranges

A

Class A: 0-127
Class B: 128-191
Class C: 192-223
Class D: 224-239

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2
Q

Private address ranges:

A

Class A private 10.0.0.0 - 10.255.255.255
Class B private 172.16.0.0 - 172.31.255.255
Class C private: 192.168.0.0 - 192.168.255.255

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3
Q

TACACS+ does what and uses what port?

A

Uses TCP to perform AAA functions (Authentication, Authorization, Accounting) uses port 49

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4
Q

RADIUS does what and uses what port?

A

Uses UDP to perform centralized AAA (Remote Authentication Dial In User Service) Ports 1812 & 1813

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5
Q

What is RAS

A

Remote Access Server: remote gateway server provides access to a LAN

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6
Q

What is 802.11 wireless standard 802.11b

A

2.4 GHz
11 Mbps
~300’

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7
Q

What is 802.11 wireless standard 802.11a

A

5.4 GHz
54 Mbps
~150’

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8
Q

What is 802.11 wireless standard 802.11g

A

2.4 GHz
54 Mbps
~300’

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9
Q

What is 802.11 wireless standard 802.11n

A

2.4 GHz
100+ Mbps
~300’’

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10
Q

What is 802.11 wireless standard 802.11ac

A

5 GHz
Up to 1Gbps
~300’’

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11
Q

POP email protocol

A

Receive email;
moves email to device;
port 110

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12
Q

IMAP email protocol

A

Receive email;
syncs with mail server;
port 143

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13
Q

SMPT

A

Sends email;
email remains on server;
port 25

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14
Q

ISDN speed and distance

A

64 kbps & 128 kbps;

Distance 18,000 feet

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15
Q

10BaseT cable type, speed and distance -

A

Copper;
10 Mbps;
100 meters

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16
Q

100BaseT cable type, speed and distance

A

Copper;
100 Mbps;
100 meters

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17
Q

100BaseFX cable type speed and distance

A

Fiber;
100Mbps;
2 Kilometers

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18
Q

1000BaseT cable type speed and distance

A

Copper;
GB Ethernet;
100 meters

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19
Q

1000BaseLX cable type speed and distance

A

Fiber;
GB Ethernet;
5 Kilometers

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20
Q

1000BaseSX cable type speed and distance

A

Fiber - multimode;
GB Ethernet;
220-500 meters

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21
Q

10GbaseT cable type speed and distance

A

Copper;
10 GB;
55 meters

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22
Q

Port 20

A

FTP

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23
Q

Port 21

A

FTP

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24
Q

Port 22

A

SSH

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25
Q

Port 23

A

telnet

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26
Q

Port 25

A

SMTP

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27
Q

Port 53

A

DNS

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28
Q

Port 67/68

A

DHCP

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29
Q

Port 69

A

TFTP

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30
Q

Port 80

A

HTTP

31
Q

Port 110

A

POP

32
Q

Port 137

A

NETBIOS

33
Q

Port 138

A

NETBIOS

34
Q

Port 143

A

IMAP

35
Q

Port 161

A

SNMP

36
Q

Port 443

A

HTTPS

37
Q

Port 3389

A

RDP

38
Q

Port 5060

A

SIP

39
Q

What tool is used for testing telephone lines?

A

BUTT set

40
Q

Name two mail server records

A

A and MX

41
Q

What is “AAAA” ?

A

A type of DNS record used by IPv6

42
Q

PKI authentication uses what type of keys for verification?

A

Both public and private keys for authentication verification are used

43
Q

Hashes perform what function?

A

Verify data integrity

44
Q

WAN - T1 channels and speed

A

24 channels;

1.544 Mbps

45
Q

WAN - T3 channels and speed

A

672 channes;

45 Mbps

46
Q

WAN - E1 channels and speed

A

32 channels;

2.04Mbps

47
Q

WAN - E3 channels and speed

A

512 channels;

34 Mbps

48
Q

WAN - Oc-1 channels and speed

A

channels

51.8 Mbps

49
Q

What is MPLS used for?

A

Labeling packets for rerouting purposes;

Replaces ATM and frame relay

50
Q

nbstat

A

Used for troubleshooting NETBIOS name resolution problems… WINS issues;

51
Q

WINS

A

Windows Internet Name Service;

Enable Windows to resolve NetBIOS host names to IP addresses… similar to DNS

52
Q

What are methods for encapsulating data over VPN connections?

A

SSL: Secure Socket Layer… secures connections between web clients and web servers over insecure network;
IPSec: Internet Protocol Security… protects communications over the internet;
PPTP: Point to Point Tunneling Protocol…old method for VPN implementation

53
Q

What is RAS

A

Remote Access Server dial up service connects remote users to internal LAN

54
Q

Name one each authentication service for a wired and a wireless network

A

EAP - Extensible Authentication Protocol… mainly for wireless authentication;
Kerberos - authentication service geared toward wired networks

55
Q

What is AES?

A

Advanced Encryption Standard

56
Q

What is TKIP?

A

Temporary Key Integrity Protocol;

Encryption that was replaced by WPA2

57
Q

Spanning Tree Protocol

A

Prevents broadcast storms and bridge loops;

Used by switches at Layer 2

58
Q

MDIX port on switch

A

Enables connection between like devices

59
Q

Physical OSI layer

A

sending/receiving signals; Ethernet frames contain destination

60
Q

Data Link OSI layer

A

MAC addresses

61
Q

Network OSI layer

A

IP address

62
Q

Transport OSI layer

A

assembly of and sequencing of data; error checking

63
Q

Session OSI layer

A

keeping track of sessions

64
Q

Presentation OSI layer

A

converting info to or from apps

65
Q

SFP

A

Small Form factor Pluggable;

Plugs into SFP port on switch and connects to fibre channel and GB Ethernet cables

66
Q

SFP

A

Small Form factor Pluggable;

Plugs into SFP port on switch and connects to fiber channel and GB Ethernet cables

67
Q

Ethernet frame contains what?

A

Contains Destination and Source MAC addresses and Ethertype fields; Data link layer 2

68
Q

IP packet contains what?

A

Source and destination IP addresses

69
Q

Ethernet type indicates what?

A

Indicates which protocol is encapsulated in frame and helps receiving computer interpret frame content

70
Q

RIP

A 
Routing Information Protocol;
Max 15 hop count;
Distance vector;
Interior gateway;
Finds best route over network
71
Q

WPS

A

WiFi Protected Setup;

Allows users to easily secure wireless network

72
Q

NAS

A

Network Access Storage:
Single box storage;
Uses file sharing protocol like SAMBA

73
Q

SAN

A

Storage Access Network
Block level storage with one or many boxes;
Uses iSCSI and Fiber Channel protocols

74
Q

PPTP

A

Point to Point Tunneling Protocol;
Used to connect to a VPN;
Uses port 1723

A+ Review (9 decks)

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