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CCNA 640-802 Ch.2
Ch. 2 Questions - TCP/IP
27
Computer Networking
Professional
10/22/2012

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Cards

Term
What are the 4 layers of the DOD( Department of Defense)
Definition
Process/Application Layer
Host to Host Layer
Internet Layer
Network Access Layer
Term
Thr Process/Application layer refers to which three layers of the OSI model
Definition
Application, Presentation, Session
Term
Which layer does the Host - to - Host layer refer to of the OSI model
Definition
Transport
Term
Which layer does the Internet layer refer to of the OSI model
Definition
Network
Term
Which two layers does the Network Access layer refer to of the OSI model
Definition
Data Link
Physical
Term
What are the protocols that are listed in the Process/Application layer of the DoD model
Definition
Telnet, FTP, LDP, SNMP, TFTP, SMTP, NFS, X Window
Term
WHat are the Host - to - Host layer protocols
Definition
TCP
UDP
Term
What are Port Numbers used for
Definition
Used by UDP and TCP to communicate with the upper layers
Term
What are the well knows port numbers
Definition
Port numbers below 1024 defined in RFC 3232
Term
what do ports greater than 1024 represent
Definition
Used to setup sessions with other hosts by TCP and use source and destination addresses.
Term
What are the internet layer protocols
Definition
IP, ICMP, ARP, RARP, Proxy ARP
Term
What is ICMP
Definition
Internet Control Message Protocol - They provide hosts with network problems and are encapsulated within IP Datagrams
Term
What is ARP
Definition
Address Resolution Protocol: Finds hardware address of a known IP address
Term
What is RARP
Definition
Reverse Address Resoltion Protocol: Discovers IP Address of diskless machines using the MAC Address.
Term
What is Proxy ARP
Definition
INcase the only default gateway goes down, Proxy ARP allows devices to reach different subnets without having to be reconfigured.
Term
What is the Class A Address range
Definition
0 - 127
Term
What is the class B Address range
Definition
128 - 191
Term
What is the Class C Address range
Definition
192 - 223
Term
What is the Class D & E Address ranges
Definition
224 - 255
Class D(224-239) is used for mulicast address.
Class E (240-255) is used for scientific purposes
Term
What does all 0's in the network address mean?
Definition
This network or segment.
Term
What does all 1's in the network address maen
Definition
All networks. 255.255.255.255
Term
What is the reserved address spaces for Class A
Definition
10.0.0.0 - 10.255.255.255
Term
What is the reserved address space for Class B
Definition
172.16.0.0 - 172.31.255.255
Term
What is the reserved address space for Class C
Definition
192.168.0.0 0 192.168.255.255
Term
Which layer 4 protocol is used for a telnet connection?
Definition
TCP
Term
What does SMTP, FTP and HTTP have in common
Definition
They all use TCP
Term
What does DHCP, SNMP & TFTP all have in common?
Definition
They all use UDP
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