University of Maryland University College
ITEC 626 Midterm Exam
Name: .
Answer all questions clearly; For Questions 2 through 12: explain your answer; show all your work to earn full credit. Please note that answers without explanations, will not receive credit. All explanations should be in your words. Please do NOT quote any source. Answers with-line quotes or/and references will not receive credit. Answer in the space provided or add lines if needed. Please note this is an open book/notes test; it should be completed individually, not shared.
Save the completed Exam in this MS Word file as . Next, post the file in your MidTerm Exam folder before Monday, 10/19/15 at 10 AM, deadline. Late submissions will incur a penalty of 10% each day
1. [12 points] Answer …show more content…
[5 points] While IP addresses are tied to specific networks. Ethernet addresses are not. Can you think of a good reason why they are not?
The IP addresses are designed to be available from anywhere over internet and Ethernet addresses are limited to use within specific network.
Routing is used by IP i.e. specific addresses like 05.77.*.* or 767.295.*.* are used by IP for routing towards specific networks who owns these addresses. Using the BGP, these routes are distributed over an internet. This functions because all computers with in network has a same prefix of IP.
However Ethernet addresses are generates randomly at creation and has nothing in common with each other’s. Hence Ethernet switches learn every single address they view on internet.
Most networks are designed small so that Ethernet switches can keep track of all computers in network, however if same has to be done for entire internet, it may requires huge hardware support. Hence Ethernet addresses are tired up to same network where computer is used.
9. [10 points] How does layer 3 switch differ from layer 2
ITEC 626 Midterm Exam
Name: .
Answer all questions clearly; For Questions 2 through 12: explain your answer; show all your work to earn full credit. Please note that answers without explanations, will not receive credit. All explanations should be in your words. Please do NOT quote any source. Answers with-line quotes or/and references will not receive credit. Answer in the space provided or add lines if needed. Please note this is an open book/notes test; it should be completed individually, not shared.
Save the completed Exam in this MS Word file as . Next, post the file in your MidTerm Exam folder before Monday, 10/19/15 at 10 AM, deadline. Late submissions will incur a penalty of 10% each day
1. [12 points] Answer …show more content…
[5 points] While IP addresses are tied to specific networks. Ethernet addresses are not. Can you think of a good reason why they are not?
The IP addresses are designed to be available from anywhere over internet and Ethernet addresses are limited to use within specific network.
Routing is used by IP i.e. specific addresses like 05.77.*.* or 767.295.*.* are used by IP for routing towards specific networks who owns these addresses. Using the BGP, these routes are distributed over an internet. This functions because all computers with in network has a same prefix of IP.
However Ethernet addresses are generates randomly at creation and has nothing in common with each other’s. Hence Ethernet switches learn every single address they view on internet.
Most networks are designed small so that Ethernet switches can keep track of all computers in network, however if same has to be done for entire internet, it may requires huge hardware support. Hence Ethernet addresses are tired up to same network where computer is used.
9. [10 points] How does layer 3 switch differ from layer 2