Introduction xxi
Chapter 1 Domain 1 Network Technologies 1
1.1 Compare the layers of the OSI and TCP/IP models 7
OSI model 7
TCP/IP model 8
Exam Essentials 10
1.2 Classify how applications, devices, and protocols relate to the OSI model layers 10
MAC addresses 10
IP Addresses 11
EUI-64 11
Frames 11
Packets 11
Switch 12
Router 13
Multilayer Switch 13
Hub 13
Encryption devices 14
Cable 14
NIC 14
Bridge 15
Exam Essentials 15
1.3 Explain the purpose and properties of IP addressing 15
Classes of addresses 16
Classless (CIDR) 18
IPv4 vs. IPv6 (formatting) 19
MAC address format 21
Subnetting 22
Multicast vs. unicast vs. broadcast 26
APIPA 26
Exam Essentials 27
1.4 Explain the purpose and properties of routing and switching 27
EIGRP 28
OSPF 28
RIP 28
Link state vs. distance vector vs. hybrid 29
Static vs. dynamic 29
Routing metrics 30
Next hop 30
Spanning Tree Protocol 31
VLAN (802.1q) 31
Port mirroring 32
Broadcast domain vs. collision domain 32
IGP vs. EGP 33
Routing tables 33
Convergence (steady state) 34
Exam Essentials 34
1.5 Identify common TCP and UDP default ports 35
Exam Essentials 36
1.6 Explain the function of common networking protocols 36
Transmission Control Protocol (TCP) 41
File Transfer Protocol (FTP) 41
User Datagram Protocol (UDP) 41
TCP/IP suite 42
Dynamic Host Configuration Protocol (DHCP) 42
Trivial File Transfer Protocol (TFTP) 42
Domain Name System (DNS) 42
Hypertext Transfer Protocol (HTTP) 43
Hypertext Transfer Protocol Secure (HTTPS) 43
Address Resolution Protocol (ARP) 43
Session Initiation Protocol (SIP) 44
Real-Time Transport Protocol (RTP) 44
Secure Shell (SSH) 44
Post Office Protocol Version 3 (POP3) 44
Network Time Protocol (NTP) 45
Internet Message Access Protocol version 4 (IMAPv4) 45
Telnet 45
Simple Mail Transfer Protocol (SMTP) 45
Simple Network Management Protocol 2/3 (SNMP 2/3) 46
Internet Control Message Protocol (ICMP) 46
Internet Group Multicast Protocol (IGMP) 46
Transport Layer Security (TLS) 47
Exam Essentials 47
1.7 Summarize DNS concepts and its components 47
DNS servers 47
DNS records 47
Dynamic DNS 48
Exam Essentials 48
1.8 Given a scenario, implement the following network troubleshooting methodology 48
Identify the problem 49
Establish a theory of probable cause 49
Test the theory to determine cause 50
Establish a plan of action to resolve the problem and identify potential effects 50
Implement the solution or escalate as necessary 50
Verify full system functionality and if applicable implement preventive measures 51
Document findings, actions, and outcomes 51
Exam Essentials 51
1.9 Identify virtual network components 51
Virtual Switches 52
Virtual Desktops 52
Virtual Servers 52
Virtual PBX 53
Onsite vs. Offsite 53
Network as a Service (NaaS) 53
Exam Essentials 54
Review Questions 55
Chapter 2 Domain 2 Network Installation and Configuration 57
2.1 Given a scenario, install and configure routers and switches 60
Routing tables 60
NAT 61
PAT 61
VLAN (trunking) 63
Managed vs. unmanaged 63
Interface configurations 63
PoE 65
Traffic filtering 65
Diagnostics 65
VTP configuration 65
QoS 66
Port mirroring 66
Exam Essentials 66
2.2 Given a scenario, install and configure a wireless network 67
WAP placement 67
Antenna types 67
Interference 67
Frequencies 68
Channels 68
SSID (enable/disable) 68
Wireless standards and Compatibility 69
Exam Essentials 69
2.3 Explain the purpose and properties of DHCP 70
Static vs. dynamic IP addressing 70
Reservations 71
Scopes 71
Leases 72
Options (DNS servers, suffixes) 72
Exam Essentials 72
2.4 Given a scenario, troubleshoot common wireless problems 73
Interference 73
Signal strength 73
Configurations 74
Incompatibilities 74
Incorrect channel 74
Latency 74
Encryption type 75
Bounce 75
SSID mismatch 75
Incorrect switch placement 75
Exam Essentials 76
2.5 Given a scenario, troubleshoot common router and switch problems 76
Switching loop 76
Bad cables/improper cable types 77
Port configuration 77
VLAN assignment 77
Mismatched MTU/MTU black hole 77
Power failure 78
Bad/missing routes 78
Bad modules (SFPs, GBICs) 78
Wrong subnet mask 78
Wrong gateway 78
Duplicate IP address 79
Wrong DNS 79
Exam Essentials 80
2.6 Given a set of requirements plan and implement a basic SOHO network 80
List of requirements 80
Cable length 81
Device types/requirements 81
Environment limitations 81
Equipment limitations 81
Compatibility requirements 82
Exam Essentials 82
Review Questions 83
Chapter 3 Network Media and Topologies 85
3.1 Categorize standard media types and associated properties 90
Fiber 90
Copper 91
Plenum vs. non-plenum 95
Media converters 96
Distance limitations and speed limitations 97
Broadband over powerline 98
Exam Essentials 98
3.2 Categorize standard connector types on network media 99
Fiber 99
Copper 101
Exam Essentials 105
3.3 Compare and contrast different wireless standards 106
802.11 a/b/g/n standards 106
Exam Essentials 108
3.4 Categorize WAN technology types and properties 108
Types 108
Properties 116
Exam Essentials 118
3.5 Describe different network topologies 118
Exam Essentials 123
3.6 Given a scenario, troubleshoot common physical connectivity problems 124
Exam Essentials 126
3.7 Compare and contrast different LAN technologies 126
Exam Essentials 129
3.8 Identify components of wiring distribution 130
Exam Essentials 132
Review Questions 133
Chapter 4 Network Management 135
4.1 Explain the purpose and features of various network appliances 138
Load balancer 138
Proxy server 139
Content filter 139
VPN Concentrator 140
Exam Essentials 140
4.2 Given a scenario, use the appropriate hardware tools to troubleshoot connectivity issues 140
Cable tester 140
Cable certifier 141
Crimper 141
Butt set 142
Toner probe 142
Punch down tool 143
Protocol analyzer 144
Loop back plug 144
TDR 144
OTDR 145
Multimeter 145
Environmental monitor 146
Exam Essentials 146
4.3 Given a scenario, use the appropriate software tools to troubleshoot connectivity issues 147
Protocol analyzer 147
Throughput testers 147
Connectivity software 148
Ping 148
Tracert/traceroute 148
Dig 150
Ipconfig/ifconfig 150
Nslookup 151
Arp 152
Nbtstat 154
Netstat 155
Route 156
Exam Essentials 158
4.4 Given a scenario, use the appropriate network monitoring resource to analyze traffic 158
SNMP 159
SNMPv2 159
SNMPv3 159
Syslog 160
System logs, History logs, and General logs 160
Traffic analysis 160
Network sniffer 161
Exam Essentials 161
4.5 Describe the purpose of configuration management documentation 162
Wire schemes 162
Network maps 163
Documentation 163
Cable management 163
Asset management 164
Baselines 164
Change management 164
Exam Essentials 165
4.6 Explain different methods and rationales for network performance optimization 165
Methods 165
Reasons 167
Exam Essentials 169
Review Questions 170
Chapter 5 Domain 5 Network Security 173
5.1 Given a scenario, implement appropriate wireless security measures 177
Encryption Protocols 177
MAC address filtering 179
Device placement 179
Signal strength 179
Exam Essentials 180
5.2 Explain the methods of network access security 180
ACL 180
Tunneling and encryption 182
Remote Access 184
Exam Essentials 187
5.3 Explain the methods of user authentication 188
PKI 188
Kerberos 189
AAA 190
Network access control 191
CHAP 191
MS-CHAP 192
EAP 192
Two-factor authentication 192
Multifactor authentication 193
Single sign-on 193
Exam Essentials 193
5.4 Explain common threats, vulnerabilities, and mitigation techniques 194
Wireless 195
Attacks 197
Mitigation techniques 200
Exam Essentials 201
5.5 Given a scenario, install and configure a basic firewall 201
Types 202
Port Security 202
Stateful inspection vs. packet filtering 203
Firewall rules 203
NAT/PAT 204
DMZ 204
Exam Essentials 205
5.6 Categorize different types of network security appliances and methods 205
IDS and IPS 206
Vulnerability scanners 207
Methods 208
Exam Essentials 208
Review Questions 210
Appendix A Answers to Review Questions 213
Chapter 1: Domain 1 Network Technologies 214
Chapter 2: Domain 2 Network Installation and Configuration 215
Chapter 3: Network Media and Topologies 216
Chapter 4: Network Management 217
Chapter 5: Domain 5 Network Security 219
Appendix B About the Additional Study Tools 221
Additional Study Tools 222
Sybex Test Engine 222
Electronic Flashcards 222
PDF of Glossary of Terms 222
Adobe Reader 222
System Requirements 223
Using the Study Tools 223
Troubleshooting 223
Customer Care 224
Index 225
