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920-260 VCE exam - Nortel Secure Router Rls. 10.1 Configuration & Management Updated: 2023

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Exam Code: 920-260 Nortel Secure Router Rls. 10.1 Configuration & Management VCE exam June 2023 by Killexams.com team
Nortel Secure Router Rls. 10.1 Configuration & Management
Nortel Configuration Practice Test

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Nortel Secure Router Rls. 10.1 Configuration & Management
D. routing
Answer: C, D
Question: 59
What is a major reason to choose dynamic routing over static routing?
A. The number of users
B. The number of WAN links
C. The number of Nortel products
D. The size and complexity of the network(s)
Answer: D
Question: 60
Where in the Secure Router OS command line interace is NAT configured?
A. Under the router configuration
B. Under the bundle configuration
C. Under the system configuration
D. Under the module configuration
Answer: B
Question: 61
Which three NAT traversal strategies are used for VoIP? (Choose three.)
A. Cone NAT
B. Dynamic NAT
C. Application Gateway (ALGs)
D. NAT avoidance (VPN, etc? E. Source Specific NAT
Answer: A, C, D
Question: 62
To view all of your OSPF neighbor(s) and verify their IP address, router id and state
of the connection, which command should you use?
A. Show ip ospf neighbor detail
B. Show ip route ospf
C. Show database ospf database_summary
D. You cannot view all that information in one command.
Answer: A
Question: 63
Which syntax is correct for viewing only OSPF routes?
A. Show ip route
B. Show route ospf
C. Show ip routes ospf
D. Show ip ospf routes
Answer: C
Question: 64
You are enabling OSPF on the Nortel Secure Router. You have already configured and tested
the Ethernet ports and WAN links. What is the next step?
A. Do nothing, OSPF is enabled by default.
B. Configure OSPF on the associated interfaces.
C. Type router ospf from configure prompt.
D. Create a router ID using a configured IP address on the router.
Answer: D
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Calculus Readiness Test Practice Test

The questions that follow are designed to make prospective students aware of the mathematics background required for those intending to take one of the SFU Calculus courses: MATH 150, 151, 154 or 157. The genuine test will cover the same concepts as this VCE exam does, but the questions will be different. For more information about the expectations, read Calculus Readiness Test Assessment Topics.

If you do not achieve a passing score on the genuine test, we recommend that you enroll in Math 100 course, Precalculus.

Treat the Practice Calculus Readiness Test as a learning experience: if your answer to a question is incorrect, make sure that you understand the concept the question is related to before attempting the genuine test.

You should be aware of the following conditions when you attempt this practice test:

  1. To be admitted to MATH 151, you must answer at least 24 questions out of the 30 questions correctly (on the genuine test, not the practice test). For the other Calculus courses, the passing score is 20. The VCE exam does not keep track of your success rate - you will have to keep track of it yourself.
  2. You may take as much time as you like to complete the practice test. However, the genuine test will be timed: you will have 1.5 hour for completion of the test.
  3. On the practice test, you will be allowed multiple attempts at each question. On the genuine test, you will be allowed to attempt each question only once.
  4. You may take the VCE exam as many times as you wish. However, you will be allowed to take the genuine test only once.
  5. You will have to write the genuine test in person at the SFU Burnaby campus, and you will have to book a specific time to take it. You will not be permitted to bring any electronic devices to the test, but the software you will be using will allow you to use a basic four-function calculator if you wish to do so.
Sun, 15 May 2022 08:54:00 -0500 en text/html https://www.sfu.ca/math/undergraduate/advising/calculus-readiness-test/calculus-readiness-test-practice-test.html How to Use practice exams to Study for the LSAT No result found, try new keyword!Likewise, it’s a bad idea to take the LSAT without first training with real practice tests. That said, very few athletes run daily marathons. Instead, they vary their training with shorter ... Fri, 28 Oct 2022 12:55:00 -0500 text/html https://www.usnews.com/education/blogs/law-admissions-lowdown/articles/how-to-use-practice-tests-to-study-for-the-lsat Reading Comprehension Practice Test

Reinforce reading comprehension skills with this simple practice quiz! Each of the illustrated paragraphs in this worksheet is followed by a multiple-choice question designed to help learners' reinforce their reading comprehension skills. Designed for second graders, this appealing, playful worksheet is a fun way to practice, review, or even test concepts including sequence of events, identifying the central message, and drawing conclusions.

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Rules of the Road VCE exam #2

Review the rules of the road with this traffic signs and signals practice test. Your teen will answer questions about signs and traffic signals in this practice driving test. Maybe your child knows what a stop sign means, but does he know what an inverted red triangle represents? Help him get ready for the written learner's permit test with this traffic signs and signals driving practice test.

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Practice Tests for IGCSE English as a Second Language

The tests will help familiarise students with the format and requirements of the IGCSE E2L reading and Writing/Listening and Speaking papers. Teachers will find them a valuable source of stimulating practice material which will engage the interest of students at this level, particularly those preparing for academic study. The material is also recommended for use with non-exam students at intermediate to upper-intermediate level. The resources include: stimulating authentic texts on a wide range of subjects, reflecting the educational nature and international perspective of the IGCSE; realistic tasks, relevant to students’ interests and experience; detailed information about the examination, and teacher’s guidelines on timing and marking; invaluable practical advice to the student; model summaries and compositions/full audio scripts and examiner’s notes in the With Key editions. Endorsed by CIE.

Mon, 25 Feb 2013 09:21:00 -0600 en text/html https://www.cambridge.org/us/education/subject/english/english-second-language/practice-tests-igcse-english-second-language
Airbus tests UAS at sea in full operational configuration

Airbus Helicopters and the French Armament General Directorate (DGA) tested the unmanned aerial system (UAS) VSR700 for the first time in an operational configuration from a ship at sea.

The VSR700 performed 80 fully autonomous take-offs and landings from a civil vessel off the coast of Brittany in the west of France at the beginning of May.

In 2022, the autonomous take-off and landing capabilities of the VSR700 were tested from the same vessel using an optionally piloted vehicle based on a modified Guimbal Cabri G2 equipped with the autonomous take-off and landing (ATOL) system, developed for the VSR700. This time the test campaign took place with the SDAM demonstrator and fully validated the capabilities of the system as part of the Système de Drone Aérien pour la Marine study that was awarded to Airbus Helicopters and Naval Group in 2017.

Autonomous take-off and landing capabilities are a key asset of the VSR700 and are made possible with the use of the Airbus DeckFinder system. This enables autonomous launch and recovery of UAVs with an accuracy of 10cm-20cm during challenging operations in harsh environmental conditions, independently of GNSS/GPS and regardless of degraded visual conditions.

This test campaign follows two series of trials that were conducted with the DGA in late 2022 and early 2023, from the Levant Island Test Center located in the south of France. During these trials, the SDAM prototype demonstrated its ability to operate in a maritime environment.

The handling qualities of the aircraft were tested as well as the capabilities of the sensors (a maritime surveillance radar, an electro optical sensor, and an AIS receiver) alongside the mission system developed by Naval Group.

The next development steps will see the second VSR700 prototype perform its maiden flight ahead of flight testing onboard a French Navy FREMM during the second semester of this year.

Sun, 28 May 2023 12:01:00 -0500 Maddie Saines en-US text/html https://www.gpsworld.com/airbus-tests-uas-at-sea-in-full-operational-configuration/
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How accurate are rapid, point-of-care tests for HIV?

Key points

  • Rapid tests are usually reliable for long-standing infections, but are sometimes unable to detect latest HIV infections acquired in the past few weeks.
  • Many tests are based on older ‘second-generation’ technology, but a ‘fourth-generation’ test with better performance is available.
  • Like any screening test, a reactive (‘positive’) result must be confirmed with one or two follow-up tests.

Rapid tests are often referred to as point-of-care tests because rather than sending a blood sample to a laboratory, the test can be conducted and the result read in a doctor’s office or a community setting, without specialised laboratory equipment.

Most point-of-care tests require a tiny sample of blood (the fingertip is pricked with a lancet). Other tests require oral fluid (an absorbent pad is swabbed around the outer gums, adjacent to the teeth). They are called ‘rapid’ tests because the result can usually be given within a few minutes.

Most rapid tests detect HIV antibodies. They are not part of HIV itself, but are produced by the human body in response to HIV infection. In the weeks after exposure to HIV, the immune system recognises some components of the virus and begins to generate HIV antibodies in order to damage, neutralise or kill it (this period is known as ‘seroconversion’). These antibodies persist for life.

In contrast, the recommended laboratory tests also detect p24 antigen, a protein contained in HIV's viral core that can be detected sooner than antibodies. Most rapid tests, with the exception of the  Determine HIV Early Detect and Determine HIV-1/2 cannot detect p24 antigen.

The accuracy of point-of-care tests is not always equal to those of laboratory tests, especially in relation to latest infection. This is for two main reasons:

  • What the test looks for. While one antibody/antigen test is available, the other tests look for antibodies only. Moreover, some can only detect immunoglobulin G (IgG) antibodies, but not immunoglobulin M (IgM) antibodies, which appear sooner.
  • The sample taken. Point-of-care tests are usually performed on whole blood taken from a fingerprick. This has a lower concentration of antibodies and p24 than plasma. Samples of oral fluid have a concentration of antibodies that is lower still. (Plasma is the colourless fluid part of blood, separated from whole blood using laboratory equipment. Fingerprick blood is produced by pricking the finger with a lancet, whereas oral fluid is obtained by swabbing the gums.)

As a result, the window period of commonly used rapid tests such as the  Determine HIV Early Detect and the INSTI HIV-1/HIV-2 Antibody Test may be one to two weeks longer than for fourth-generation laboratory tests. Other rapid tests, based on older technology, may have longer window periods than this.

Rapid tests can be performed by staff with limited laboratory training. However, reading the test result relies on subjective interpretation, and when the result is borderline, experienced staff give more consistently accurate results. In a setting with low prevalence of HIV, staff may not see enough true positive samples to gain experience in interpreting test results.

It is good practice for test results to be re-read by a second member of staff, within the time frame specified on the test packaging. Organisations using point-of-care tests must maintain strong links with a pathology laboratory that provides support with clinical governance and quality assurance.

When used in a population with a low prevalence of HIV, false positive results can be a problem. The tests always produce a small number of false positive results, but in a setting where very few people have HIV, the majority of apparent positive results will in fact be incorrect. However, as the proportion of people with HIV being tested increases, the true positives start to outnumber false positives. This means it is more appropriate to use point-of-care tests in high-prevalence populations, such as with gay and bisexual men, than in the general population.

All HIV tests need to have reactive results (a preliminary positive result) confirmed with further tests. Most providers tell people who are testing that a negative result is definitive, but that a reactive result simply indicates the need for further laboratory testing.

The accuracy of different rapid tests

A wide range of point-of-care tests have been manufactured in many countries, but only a few of them have been subject to rigorous, independent evaluations, and even fewer are marketed in the UK. Research on HIV tests is only occasionally published in medical journals. Informally, laboratory professionals may have insights into which tests perform best.

It is important to verify that any test used is CE marked. This should mean that the test conforms to European health and safety legislation, although it does not necessarily mean that test performance has been independently evaluated.

There are variations in accuracy from one test to another, with some older tests that are not usually marketed in the UK having a sub-optimal sensitivity and specificity. However, evaluations by the World Health Organization of several rapid diagnostic tests that either have CE marks or are approved by the US Food and Drug Administration (FDA), indicate that most are extremely accurate. The key measures of accuracy are sensitivity (the percentage of results that are correctly positive when HIV is actually present) and specificity (the percentage of results that are correctly negative when HIV is not present).

Of note, in the World Health Organization data below, most tests were performed with samples of plasma or serum. However, the tests are less sensitive when testing whole blood sampled from a finger prick. There is one test (the OraQuick Advance Rapid HIV-1/2) which can also test oral fluid samples in addition to blood.

Also, the figures on sensitivity are based on samples from people who had chronic (not recent) HIV infection, but the tests are less accurate in cases of latest infection, especially those which only detect immunoglobulin G (IgG) antibodies.





OraQuick HIV-1/2 Rapid HIV-1/2 (OraSure)




HIV 1/2 STAT-PAK (Chembio)




Determine HIV Early Detect (Abbott) IgG + IgM + p24 100% 99.4%

Determine HIV-1/2 (Abbott)

IgG + IgM + p24



Uni-Gold HIV (Trinity)

IgG + IgM



INSTI HIV-1/HIV-2 Antibody Test (bioLytical)

IgG + IgM



SD BIOLINE HIV-1/2 3.0 (Standard Diagnostics)

IgG + IgM



DPP® HIV 1/2 Assay (Chembio)




There is one rapid, point-of-care test that looks for both antibodies and p24 antigen, in a similar way to antibody/antigen laboratory tests. The Determine HIV-1/2 Ag/Ab Combo was originally introduced in 2009, with an updated version that is now called the Determine HIV Early Detect launched in Europe in 2015 (the older version is still marketed in the United States and in some parts of the world).

The promise of having a ‘fourth-generation’ point of care test that detects p24 antigen is that the window period should be shortened. However, several studies found that although the older version of this test performed well in respect of established HIV infection, its ability to detect latest HIV infection did not match that of laboratory antibody/antigen tests. The test was quite insensitive to p24 antigen, making it only marginally better than antibody-only tests in detecting acute (recent) infection.

"All HIV tests need to have reactive results (a preliminary positive result) confirmed with further tests."

The handful of studies published so far on the newer version suggests it has better performance in acute infection, although it still does not match that of antibody/antigen laboratory tests. The Determine HIV Early Detect’s sensitivity during acute infection has been variously estimated to be 28% (in three African countries), 54% (France), 65% (the Netherlands) and 88% (UK).

An analysis pooled the results of 18 separate studies in which a point-of-care test (including Determine, OraQuick, UniGold and INSTI) was compared with a more sensitive laboratory test. Compared with fourth-generation laboratory tests, the estimated sensitivity of the point-of-care tests was 94.5% (95% confidence interval 87.4-97.7) and specificity was 99.6% (99.4-99.7). Compared with RNA (viral load) tests, the estimated sensitivity was 93.7% (95% confidence interval 88.7-96.5) and specificity 98.1% (95% CI: 97.9-98.2).

Sensitivity was higher in nine studies conducted in African countries than in the nine studies conducted in the United States and other wealthy countries. This is likely to be due to different populations coming forward for screening. Whereas 4.7% of those testing positive in African studies had acute (recent) HIV infection, this figure rose to 13.6% in the high-income countries.



A protein substance (immunoglobulin) produced by the immune system in response to a foreign organism. Many diagnostic tests for HIV detect the presence of antibodies to HIV in blood.

point-of-care test

A test in which all stages, including reading the result, can be conducted in a doctor’s office or a community setting, without specialised laboratory equipment. Sometimes also described as a rapid test.

window period

In HIV testing, the period of time after infection and before seroconversion during which markers of infection are still absent or too scarce to be detectable. All tests have a window period, the length of which depends on the marker of infection (HIV RNA, p24 antigen or HIV antibodies) and the specific test used. During the window period, a person can have a negative result on an HIV test despite having HIV.


An HIV antigen that makes up most of the HIV viral core. High levels of p24 are present in the blood during the short period between HIV infection and seroconversion, before fading away. Since p24 antigen is usually detectable a few days before HIV antibodies, a diagnostic test that can detect p24 has a slightly shorter window period than a test that only detects antibodies.


Because of the possibility that a positive result from a single HIV test is, in fact, a false positive, the result is described as 'reactive' rather than 'positive'. If the result is reactive, this indicates that the test has reacted to something in the blood and needs to be investigated with follow-up tests.

A study in five African countries found that the performance of point-of-care tests was sub-optimal. Samples from some countries were more likely to have false positive results than others, suggesting that tests need to be locally validated and that some tests may be more accurate in relation to some HIV subtypes than others. The researchers found a high number of false positive results, whereas false negative results were relatively rare. The specificities of the First Response HIV Card Test 1–2.0, INSTI HIV-1/HIV-2 Antibody Test, Determine HIV-1/2 and Genie Fast HIV 1/2 were all between 90 and 95%. The findings confirm that the diagnosis of HIV should not be based on results from a single HIV rapid diagnostic test. A combination of HIV tests, and more specifically an algorithm (sequence) of two or three different tests, is required to make an HIV-positive diagnosis. This is recommended in testing guidelines.

All HIV tests need to have reactive (preliminary positive) results confirmed with confirmatory tests. A particular challenge healthcare workers have with rapid tests is how to communicate a reactive result to the person testing (who may be present while the result is being read) and explain that supplementary tests are needed. These problems are less frequently faced with laboratory testing – a large enough blood sample was taken to allow for it to be tested several times and for uncertainties in the diagnosis to be resolved.

Window periods of rapid tests

The window period refers to the time after infection and before seroconversion, during which markers of infection (p24 antigen and antibodies) are still absent or too scarce to be detectable. Tests cannot reliably detect HIV infection until after the window period has passed. All tests have a window period, which varies from test to test.

Delaney and colleagues estimated window periods for a handful of rapid tests in a 2017 study. However, all these estimates were based on testing blood plasma. In practice, tests are usually done on fingerprick blood (obtained by pricking the finger with a lancet) and the window period is likely to be several days longer.

The fourth-generation Determine HIV-1/2 Ag/Ab Combo was estimated to have a median window period of 19 days (interquartile range 15 to 25 days). This indicates that half of all infections would be detected between 15 and 25 days after exposure. Ninety-nine per cent of HIV-infected individuals would be detectable within 43 days of exposure.

The third-generation INSTI HIV-1/HIV-2 test was estimated to have a median window period of 26 days (interquartile range 22 to 31 days). This indicates that half of all infections would be detected between 22 and 31 days after exposure. Ninety-nine per cent of HIV-infected individuals would be detectable within 50 days of exposure.

Several second-generation tests, such as OraQuick Advance Rapid HIV 1/2, Clearview HIV 1/2 STAT-PACK and SURE CHECK HIV 1/2 were evaluated. The median window period was 31 days (interquartile range 26 to 37 days). This indicates that half of all infections would be detected between 26 and 37 days after exposure. Ninety-nine per cent of HIV-infected individuals would be detectable within 57 days of exposure.

UK guidelines take a cautious approach, describing the window period for all rapid, point-of-care tests as 90 days.

If you are testing with a rapid, point-of-care test and you are concerned that you may have been exposed to HIV during the test’s window period, you could also be tested with a fourth-generation laboratory test. This requires a blood sample, taken through a needle from a vein in the arm, which is tested in a laboratory using a more sensitive test. The results should be available after a few days.

Situations in which rapid tests may not be accurate

Performance of rapid tests is poorer in a number of situations. Results may not be accurate.

What do the test results mean?

There are three possible test results:

1) Negative (may also be described as ‘non-reactive’). The test did not find any evidence of HIV infection. You probably don’t have HIV (so long as you aren’t testing in one of the situations described in the last section).

2) Reactive (often incorrectly described as ‘positive’ by manufacturers). The test assay has reacted to a substance in your blood. This does not necessarily mean that you are HIV positive. It means you need to take more tests to confirm the result. These extra tests are best done at a healthcare facility where they have access to the most accurate HIV testing technologies.

3) ‘Indeterminate’, ‘equivocal’ or ‘invalid’. The test result is unclear. Another test needs to be done.

Tue, 23 Dec 2014 15:44:00 -0600 en text/html https://www.aidsmap.com/about-hiv/how-accurate-are-rapid-point-care-tests-hiv
Placement Test Practice Placement Test Practice

Being prepared is the best way to ease the stress of test taking. If you are having difficulty scheduling your Placement Test, please contact the UNG Testing Office.

If you have a red yes in any Placement Test Required row on your Check Application Status page in Banner, read the information below relating to the area in which you have the red yes.


Mon, 05 Dec 2022 08:03:00 -0600 en text/html https://ung.edu/learning-support/placement-test-practice.php/placement-test-practice.php

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