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CCNA - Lammel Ch. 3
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Terms in this set (23)
What happens if a DHCP conflict occurs?
The server will hold that address and not use it again until it is fixed by an administrator.
What can proxy ARP help?
Helps a subnet reach remote subnets without configuring routing or a default gateway.
What information can DHCP provide?
IP address, subnet mask, default gateway, and DNS information.
What is Address Resolution Protocol (ARP) used for?
To find the hardware address from a known IP address
What layers of the OSI model is equal to the Application layer for the TCP/IP model?
Application, presentation, session
What layers of the OSI model is equal to the Network access layer for the TCP/IP model?
Data link and physical
How many hosts can a class C network have?
2^8 - 2 = 254
What does a client send out as a DHCP Discover message?
The layer-2 broadcast FF:FF:FF:FF:FF:FF, layer-3 broadcast is 255.255.255.255
What features is DHCP consisted of?
Connectionless(UDP), works at the transport layer or the host-to-host(for TCP model) or transport layer
What layer/protocol does Telnet use?
Layer 4, TCP
How does a client prevent a possible DHCP IP conflict?
Use ARP (broadcast an ARP request for its own IP address) to see if another host responds.
What are some services that use TCP?
SMTP, FTP, and HTTP
What are some services that use UDP?
DHCP, SNMP, and TFTP
What are some protocols that are in the application layer
Telnet, FTP, and TFTP
What's the name for the TCP/IP model's transport layer?
What's the name for the TCP/IP model's network layer?
What are classes A, B, and C private IP ranges?
A: 10.0.0.0 through 10.255.255.255, B: 172.16.0.0 through 172.31.255.255, C: 192.168.0.0 through 192.168.255.255
What are the four layers of the TCP/IP model?
Application/Process, Host-to-Host, Internet, and Network Access
What is ICMP?
Internet Control Message Protocol. Used for diagnostics and destination unreachable messages. Encapsulated in IP datagrams
What does DNS use TCP and UDP for?
TCP for zone exchanges between servers and UDP when a client is trying to resolve a hostname to an IP address
What protocols operate at the process/application layer?
Telnet, FTP, SNMP, DNS, X Window, NFS, TFTP, SMTP, and LPD
What protocols operate at the host-to-host layer?
What protocols operate at the internet layer?
IP, ARP, ICMP, RARP, Proxy ARP
THIS SET IS OFTEN IN FOLDERS WITH...
CCNA - Lammel Ch. 1
CCNA - Lammel Ch. 2
CCNA 4 : Chapter 1: Hierarchical Network Design
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