1) How long does it take for a 9.5 Mbyte file to be uploaded to a file server using a broadband connection at 2.2 Mbit/s?
Choose the nearest to the correct value from the options listed below.
A) 4 s
B) 9 s
C) 17 s
D) 18 s
E) 34 s
F) 36 s
2) How many links are required to join together 150 network elements, if they are connected using a fully meshed topology?
A) 150
B) 300
C) 4 500
D) 11 125
E) 22 250
F) 45 000
3) A signal takes 4.5 µs to travel from node A to node B. Given a speed of propagation of 1.77x 10^8 m/s, what is the distance between the two nodes? Choose the nearest to the correct value from the options listed below.
A) 25 m
B) 40 m
C) 80 m
D) 250 m
E) 400 m
F) 800 m
4)A round trip delay of 46 µs is measured in a 3.6 km link. Given that any repeater used in the link will be of the same type and that each repeater introduces a 3µs delay, calculate how many repeaters, if any, are used in the link. Use a propagation velocity of 1.77x108 m/s.
A) None
B) 1 repeater
C) 2 repeaters
D) 3 repeaters
E) 4 repeaters
F) 5 repeaters
5)Which two of the following statements accurately describe slot time?
A) Slot time is measured in microseconds (µs).
B) Slot time is a measure of the time a computer keeps sensing the channel to ensure no collisions have occurred.
C)Slot time is independent of network speed.
D)An increase in maximum segment length will result in a decrease in slot time.
E)Slot time defines a lower limit on frame length if collisions are to be detected.
F)Slot time is dependent on frame length.
6)Complete the following sentence by identifying the missing words from the list below:
_________ is a term used to describe a private network that an organization could extend to its suppliers to facilitate _________ communication.
● A) B2B, internet
● B) extranet B2B
● C) extranet B2C
● D) B2B,B2C
● E) intranet B2B
● F) internet, B2C
7)Which of the following statements about standards and protocols are true?
A)CSMA/CD is a protocol that is used to provide fair access to users on a LAN.
B)All standardizing bodies are government organizations.
C)Network protocols are rules that govern the way data is transmitted on a network.
D)SNMP is a protocol that is used to detect errors in data packets.
E)UDP is a protocol used in the transportation of data packets where flow control and sequencing is critical.
F)RFC's are private documents that record the minutes of all official standards discussions.
8)Which two of the following statements concerning the TCP/IP protocol family are true?
A)In a connectionless service each packet in a session could take a different route.
B)IP guarantees error-free transportation between source and destination application layers.
C)In OSI layered architecture terms, TCP operates in the nework layer.
D)The TCP header includes data to assist in the flow control of packets.
E)UDP and TCP both sit in the layer above IP and are therefore both connectionless protocols.
F)TCP runs on the top of application layer protocols like HTTP and SNMP.