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Routing the Telephone to a Ne Neighborhood

In:

Submitted By derwyn1
Words 1737
Pages 7
NT2640

MIDTERM EXAM: QUESTIONS

NAME:_jordan Lewis________________________DATE:__07/29/14_______________

1. How many usable host addresses are contained in a Class C network? (Assume default class mask.)
a) 655356
b) 128
c) 512
d) 254
2. Which of the following describes a collision domain?
a) The process of a bridge learning MAC addresses to be able to filter instead of flooding
b) The separation of two IP subnets by a router
c) Devices connected to an Ethernet hub
d) Devices connected to an Ethernet switch operating in full duplex mode
3. 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?
Address/Mask Next hop
202.8.0.0/16 Interface 0
202.8.40.0/24 Interface 1
202.8.40.128/25 Router 1 default Router 2
a) Router 1
b) Router 2
c) Interface 0
d) Interface 1
4. Which of the following two protocols operate at the OSI Transport layer?
a) IP and ARP
b) TCP and UDP
c) UDP and IP
d) ARP and ICMP
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?
a) Adjacent layer interface
b) Data encapsulation
c) Same layer interaction
d) Packet reordering
6. The term autonomous system (AS) defines the collection of metrics for routes to a particular network. a) True
b) False

7. Given 5 bits of mask for the host portion of an IP address, how may usable host addresses are available? a) 62
b) 22
c) 14
d) 30

8. When a Telco provides a circuit handoff for a TDM circuit such as a DS1/T1 at the demark, the interface type is _________.
a) RJ-11
b) RJ-45
c) V.35
d) RJ-48
9. What address below belongs to the Class A network range?
a) 126.254.1.45
b) 224.42.42.42
c) 156.34.56.99
d) 195.54.23.1

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