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Exam 3

In: Computers and Technology

Submitted By ashleydade47
Words 585
Pages 3
1. Know the list of well-known ports?

smtp = mail = port 25/tcp telnet = port 23/tcp ssh = port 22/tcp snmp = port 161/udp tftp = port 69/udp

2. Range of ephemeral ports?

3. Some of the fields inspected by a firewall?

Source IP address
Destination IP address
IP protocol (ICMP, TCP or UDP)
Source TCP or UDP port
Destination TCP or UDP port

4. If firewall permits port 25, what is it permitting? smtp=mail 5. What does nat stand for?
Network Address Translation

6. What’s the basic function of NAT? a private address is translated to public address from a pool of available public addresses

7. Example of a routing protocol used within an organization

8. Which routing protocol uses distance vectors?

9. Which routing protocol uses links states?

10. OSPF stands for?
Open Shortest Path First 11. What does RIP stand for?
Routing Information Protocol

12. Which of the following uses the Dijkstra Algorithm?

13. Which routing protocol is considered in EGP?
Exterior Routing

14. Example of a classless routing protocol? RIP version 2

15. Layer 2 framing is used by which of the following?
Point-to-Point Protocol

Serial links - including dial-ups
POS - Packet over sonet (fiber optic)

16. ISDN {BRI} stands for what?
Basic Rate Interface

17. ISDNBR has how many B channels?
2B + D 2 bearer channels of 64kbps and one signaling channel of 16Kbps Usually 128Kbps for end user data

18. Isdnpri, has *23* b channels, and *1*d channels?

19. Serial Links use * PPP for framing (layer 2)* for framing?

20. A T1 has how many channels?
24 voice channels make a T1

21. Each channel in T1 has ______kilobits
1544Kbps =1.544Mbps

22. What is the speed of an OC3?

23. How many bites make up an ATM CELL?...

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