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Ccs 307:Computer Networks Question Paper

Ccs 307:Computer Networks

Course:Bachelor Of Science In Computer Science

Institution: Maseno University question papers

Exam Year:2016

SECTION A(Compulsory)
QUESTION ONE(30 MARKS)
a)Describe the following two main types of network categories:
i)Server based networks(2mks)
ii)Peer-to-peer networks(2mks)
b)Describe in detail the following intermediary network devices.
i)Repeater
ii)Bridge
iii)Router
c)Define the term network media.(2mks)
d)Using examples describe the major categories of network media.(6mks)
e)Describe the following WAN connection technologies.
i)X.25
ii)Asynchronous Transfer Mode(ATM)(3mks)
iii)Synchronous Optical Network (SONET).(3mks)
iv)Frame relay(3mks)

SECTION B(Answer any TWO questions)
QUESTION TWO(20 MARKS)
a)Using a diagram compare and contrast the abstraction layers of the TCP/IP protocol model and explain the functions of each of the abstraction layers of the TCP/IP model.(12mks)
b)Explain the relationship between IPV4 and IPV6 address standards. (3mks)
c)Discuss the significance of Gateways in internetworks.(5mks)

QUESTION THREE(20 MARKS)
a)Compare and contrast the advertisements used in RIP and OSPF.(6mks)
b)What is the difference between Link-Layer and Transport-Layer reliable data transfers? (Hint:With the TCP reliable data transfer,why idoes the underlying link layer support data transmission reliability? (6mks)
c)Distinguish between the following two switching services.(8mks)
i)Packet switching
ii)Circuit switching

QUESTION FOUR(20 MARKS)
a)Please compare CSMA/CA with CSMA/CD.Why IEEE 802.11 uses CSMA/CA instead of CSMA/CD?(8mks)
b)Briefly describe the sameness and differences between switches and routers.(8mks)
c)What is a collision domain?(Associate it with switches and hubs).(4mks)

QUESTION FIVE(20 MARKS)
a)If a host was shut down and replaced its network interface card,it will cause the inconsistency of ARP cashes in the other hosts in the same LAN.How can you solve it?Please describe the details.(5mks)
b)What's the main difference between MAC flat address and IP hierarchical address? (4mks)
c)List the characteristics of wireless link?(3mks)
d)Compare mobility support via Direct Routing with that via Indirect Routing. (8mks)

Ccs 307:Computer Networks Question Paper

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