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2640

In: Computers and Technology

Submitted By demckee
Words 1032
Pages 5
Midterm Exam: Review 1. What describes a collision domain? Devices connected to an Ethernet hub.

2. Given the following routing table on a router, which next hop will the router select given the IP packet with the destination address of : 202.8.40.254
202.8.0.0/16 interface 0
202.8.40.0/24 interface 1
202.8.40.128/25 Router 1
Default router 2
202.8.40.128/25

3. What protocols operate at the OSI Transport (4) layer? TCP and UDP

4. What operates at the OSI Physical (1) layer? Hub

5. The process of a DNS server adding a UDP header to the contents of a DNS query response, followed by adding an IP header, and then adding a data link header and trailer is an example of what? Data Encapsulation

6. Which OSI layer defines the function of the representation of data to upper layers, with an example being ASCII? Layer 6 Presentation Layer

7. A broadcast address is an address that only a single host listens to on the network. False

8. When a Telco provides a cable handoff for a TDM circuit such as a DS1/T1 at the demarc the interface type is a? RJ-48

9. What layer 2 protocols commonly used in WANs? PPP and HDLC

10. What is the term used to describe the connection of a Point-to-Point WAN provided by a Telco over a TDM circuit? Lease Line

11. What address belongs to the Class A network range? 126.254.1.45

12. How many bits comprise the network portion of a Class C address? (assume default class mask) 24 bits

13. What represents a broadcast address? (assume default class mask) 192.168.1.255

14. How many usable host addresses are contained in a Class C network?(assume default class mask) 254

15. What does a router normally use when making a decision about routing an IP packet? Destination IP address

16. What protocol is responsible for resolving MAC address from IP

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