Domain 4

Question 1

What protocol operate Layer 1 - physical, protocols

Answer 1

EIA/TIA-32
EIA/TIA-449
X.21
High-Speed Special Interface (HSSI)
Synchronous Optical Networking (SONET)
V.24 and V.35

Question 2

Layer 1 - Physical, devices

Answer 2

NIC, Hub, Repeaters, Concentrator, and amplifiers

Question 3

What protocol operate Layer 2 - Data Link, Protocols

Answer 3

Serial Line Internet Protocol (SLIP)
Point-to-Point Protocol (PPP)
Address Resolution Protocol (ARP)
Layer 2 Forwarding (L2F)
Point-to-Point Tunneling Protocol (PPTP)
Integrated Services Digital Network (ISDN)

Question 4

What H/W Layer 2 - Data Link, Devices

Answer 4

Switches and Bridges

Question 5

What protocol Layer 3 - Network Layer, protocols

Answer 5

Internet Control Message Protocol (ICMP)
Route protocol: 
---Routing Information Protocol (RIP)
---Open Shortest Path First (OSPF)
---Border Gateway Protocol (BGP)
Internet Group Management Protocol (IGMP)
Intenet Protocol (IP)
Internet Protocol Security (IPSec)
Internetwork Packet Exchange (IPX)
Network Address Translation (NAT)
Simple Key Management for Internet Protocols (SKIP)

Question 6

What H/W Layer 3 - Network Layer, devices

Answer 6

Routers and Brouters (router and bridge)

Question 7

What protocol Layer 4 - Transport Layer, protocols

Answer 7

Transmission control protocol (TCP)
User Datagram protocol (UDP)
Sequenced Packet Exchange (SPX)
Secure Socket Layer (SSL)
Transport Layer Security (TLS)

Question 8

What protocol Layer 5 - Session, protocols

Answer 8

NFS, SQL, RPC
operations on three different control modes:
—Simplex, half-duplex, full-duplex

Question 9

What operate Layer 6 - presentation, format standards

Answer 9

American standard code for information interchange (ASCII)
Extended Binary-Coded Decimal Interchange Mode (EBCDICM)
Tagged Image File Format (TIFF)
Joint Photographic Experts Group (JPEG)
Moving Picture Experts Group (MPEG)
Musical Instrument Digital Interface (MIDI)

Question 10

What operate Layer 7 - Application, Protocols

Answer 10

HTTP, FTP, SMTP, Telnet, TFTP, 
Line Print Daemon (LPD)
Electronic Data Interchange (EDI)
Post Office Protocol version 3 (POP3)
Internet Message Access Protocol (IMAP)
Simple Network Management Protocol (SNMP)
Network News Transport Protocol (NNTP)
Secure Remote Procedure Call (S-RPC)
Secure Electronic Transaction (SET)

Question 11

OSI MODEL maps to TCP/IP model:
Application
Presentation
Session

Answer 11

TCP/IP model:

Application

Question 12

OSI MODEL maps to TCP/IP model: Transport

Answer 12

TCP/IP: Transport

Question 13

OSI MODEL: Network Maps to

Answer 13

TCP/IP: Internet

Question 14

OS MODEL: Data Link, Physical maps to

Answer 14

TCP/IP: Link

—-Ethernet, Fast Ethernet, Token Ring, FDDI

Question 15

Application Level Gateway Firewall

Answer 15

Proxy firewall, 2nd generation

• -layer 7 - application
• -each packet is examine, performance impact

Question 16

Circuit level gateway firewall

Answer 16

layer 5 - Session
2nd generation
src, dst, port

Question 17

Stateful Inspection Firewall

Answer 17

AKA dynamic packet filtering firewall
src,dst,port, track packets of same session
block/authorize user activities
layer 3 and 4 (Network and Transport)
3rd generation

Question 18

Deep Packet Inspection Firewall

Answer 18

block domain, malware, and spam. Integrate with application or stateful firewall

Question 19

Un-skill Attacker Pester Real Security Folks

Answer 19

URG, ACK, PSH, RST, SYN, FIN

Question 20

IPV4

IPV6

Answer 20

IPV4 - 32 bit

IPV6 128 bit

Question 21

A   /8
B  /16
C /24
D - Multicast
E - Reserve

Answer 21

0    1-126
10   128-191
110  192-223
1110 224-239
1111  240-255

Question 22

ICMP
Echo reply
Destination Unreachable
Redirect

Echo Request
Router Advertisement

Router Solicitation
Time Exceeded

Answer 22

ICMP
0
3
5

8
9

10
11

Question 23

Common application layers protocol
Telnet
FTP
TFP
SMTP

POP3
IMAP
DHCP
HTTP
HTTPS 

LPD
X-Windows
NFS
SNMP

Answer 23

common application layer protocol
23
21(passive), 20 (Active Data)
UDP port 69
25

110
143
UDP 67 (DST port of server),  68 (src port of client)
80
443

515
6000-6063
2049
UDP: 161, 162 (Trap Messages)

Question 24

802. 11 - wireless specs
803. 11
804. 11a
805. 11b
806. 11g
807. 11n
808. 11ac

Answer 24

802.11 - wireless specs
2 Mbps 2.4GHz
54 Mbps 5GHz
11 Mbps 2.4GHz

54 Mbps 2.4GHz
200+ Mbps 2.4 or 5GHz
1 Gbps 5GHz