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NEW QUESTION: 1
Which three Cisco Unified Wireless Network capabilities use information that is provided by Radio Resource Management neighbor messages? (Choose three.)
A. rogue AP classification
B. hybrid remote edge access point
C. over-the-air provisioning
D. dynamic channel assignment
E. inter controller mobility (that is, mobility groups)
F. aggressive load balancing
Answer: A,C,D
Explanation:
First we should learn how the RRM works: 1) Controllers (whose APs need to have RF configuration computed as a single group) are provisioned with the same RF Group Name. An RF Group Name is an ASCII string each AP will use to determine if the other APs they hear are a part of the same system. (RF groups are groups of controllers that share the same RF group name and whose APs can hear the neighbor messages of each other) 2) APs periodically send out Neighbor Messages, sharing information about themselves, their controllers, and their RF Group Name. These neighbor messages can then be authenticated by other APs sharing the same RF Group Name. 3) APs that can hear these Neighbor Messages and authenticate them based on the shared RF Group Name, pass this information (consisting primarily of controller IP address and information on the AP transmitting the neighbor message) up to the controllers to which they are connected. 4) The controllers, now understanding which other controllers are to be a part of the RF Group, then form a logical group to share this RF information and subsequently elect a group leader. 5) Equipped with information detailing the RF environment for every AP in the RF Group, a series of RRM algorithms are used to optimize AP configurations. Information from Radio Resource Management (RRM) monitors the radio resources, performs dynamic channel assignments, provides detection and avoidance of interference, and provides the dynamic transmit power control (TPC).
The RRM neighbor message contains the following information:
*Radio Identifier: If the AP had multiple radios, this field identifies the radio used to transmit the message.
*Group ID: The 16-bit value and controller MAC address. This information is used to detect rogue access points. The access points will then check the beacon/probe-response frames in neighboring access point messages to see if they contain an authentication information element (IE) that matches that of the RF group. If the check is successful, the frames are authenticated. Otherwise, the authorized access point reports the neighboring access point as a rogue, records its BSSID in a rogue table, and sends the table to the controller.
*WLC IP Address: RF group leader's management IP address. This address is discovered through Over-the-Air Provisioning (OTAP)
*AP Channel: The native channel that the AP uses to service clients.
*Neighbor Message Channel: The channel the message is sent on.
*Power: The power level at which the message is transmitted.
*Antenna Pattern: The antenna pattern currently in use
Note: Dynamic channel assignment is used to dynamically allocate access point channel assignments to avoid conflict and to increase capacity and performance. For example, two overlapping channels in the 802.11g band, such as 1 and 2, cannot both simultaneously use 54 Mbps. By effectively reassigning channels, the controller keeps adjacent channels separated, thereby avoiding this problem. Over-the-Air Provisioning (OTAP) is a method for APs to discover the management IP of a controller over the air. A rogue AP is an AP that is unknown to the controller.
References: http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008072c759.shtml http://www.cisco.com/en/US/docs/wireless/controller/5.2/configuration/guide/c52rrm.html

NEW QUESTION: 2
Hinweis: Diese Frage ist Teil einer Reihe von Fragen, die dasselbe Szenario verwenden. Zur Vereinfachung wird das Szenario in jeder Frage wiederholt. Jede Frage stellt ein anderes Ziel und eine andere Antwortauswahl dar, aber der Text des Szenarios ist in jeder Frage dieser Reihe genau gleich.
Sie haben eine Datenbank, die die folgenden Tabellen enthält: BlogCategory, BlogEntry, ProductReview, Product und SalesPerson. Die Tabellen wurden mit den folgenden Transact SQL-Anweisungen erstellt:

Sie müssen die ProductReview-Tabelle ändern, um die folgenden Anforderungen zu erfüllen:
* Die Tabelle muss auf die ProductID-Spalte in der Product-Tabelle verweisen
* Vorhandene Datensätze in der ProductReview-Tabelle müssen nicht mit der Product-Tabelle validiert werden.
* Das Löschen von Datensätzen in der Product-Tabelle ist nicht zulässig, wenn die ProductReview-Tabelle auf Datensätze verweist.
* Änderungen an Datensätzen in der Product-Tabelle müssen in die ProductReview-Tabelle übernommen werden.
Sie haben auch die folgenden Datenbanktabellen: Order, ProductTypes und SalesHistory. Die Transact-SQL-Anweisungen für diese Tabellen sind nicht verfügbar.
Sie müssen die Orders-Tabelle ändern, um die folgenden Anforderungen zu erfüllen:
* Erstellen Sie neue Zeilen in der Tabelle, ohne der Tabelle INSERT-Berechtigungen zu erteilen.
* Benachrichtigen Sie den Verkäufer, der eine Bestellung aufgibt, ob die Bestellung abgeschlossen wurde oder nicht.
Sie müssen der SalesHistory-Tabelle die folgenden Einschränkungen hinzufügen:
* Eine Einschränkung für die Spalte "SaleID", mit der das Feld als Datensatzkennung verwendet werden kann
* Eine Konstante, die die ProductID-Spalte verwendet, um auf die Product-Spalte der ProductTypes-Tabelle zu verweisen
* Eine Einschränkung für die CategoryID-Spalte, die eine Zeile mit einem Nullwert in der Spalte zulässt
* Eine Einschränkung, die die Spalte "SalePrice" auf Werte beschränkt, die größer als vier Benutzer der Finanzabteilung sind, muss in der Lage sein, Daten aus der Tabelle "SalesHistory" für Verkäufer abzurufen, bei denen der Wert der Spalte "SalesYTD" über einem bestimmten Schwellenwert liegt.
Sie planen, eine speicheroptimierte Tabelle mit dem Namen SalesOrder zu erstellen. Die Tabelle muss folgende Anforderungen erfüllen:
* Die Tabelle muss 10 Millionen eindeutige Kundenaufträge enthalten.
* Die Tabelle muss Prüfpunkte verwenden, um E / A-Vorgänge zu minimieren, und darf keine Transaktionsprotokollierung verwenden.
* Datenverlust ist akzeptabel.
Die Leistung für Abfragen in der SalesOrder-Tabelle, die Where-Klauseln mit exakten Gleichheitsoperationen verwenden, muss optimiert werden.
Sie müssen eine gespeicherte Prozedur mit dem Namen spDeleteCategory erstellen, um Datensätze in der Datenbank zu löschen. Die gespeicherte Prozedur muss die folgenden Anforderungen erfüllen:
* Löschen Sie Datensätze sowohl in der BlogEntry- als auch in der BlogCategory-Tabelle, wobei CategoryId dem Parameter entspricht
@Kategorie ID.
* Vermeiden Sie das Sperren der gesamten Tabelle, wenn Sie Datensätze aus der BlogCategory-Tabelle löschen.
* Wenn während eines Löschvorgangs in einer der Tabellen ein Fehler auftritt, müssen alle Änderungen zurückgesetzt werden, andernfalls sollten alle Änderungen festgeschrieben werden.
Wie sollten Sie den Vorgang abschließen? Wählen Sie zum Beantworten die entsprechenden Transact-SQL-Segmente im Antwortbereich aus.

Answer:
Explanation:

Explanation
Box 1: set implict_transactions on
Box 2: ROWLOCK
Requirement: Avoid locking the entire table when deleting records from the BlogCategory table ROWLOCK specifies that row locks are taken when page or table locks are ordinarily taken. When specified in transactions operating at the SNAPSHOT isolation level, row locks are not taken unless ROWLOCK is combined with other table hints that require locks, such as UPDLOCK and HOLDLOCK.
Box 3: COMMIT
Box 4: ROLLBACK

NEW QUESTION: 3
You are in the process of moving your friend's WordPress site onto AWS to try and save him some money, and you have told him that he should probably also move his domain name. He asks why he can't leave his domain name where it is and just have his infrastructure on AWS.
What would be an incorrect response to his question?
A. The globally distributed nature of AWS's DNS servers helps ensure a consistent ability to route your end users to your application.
B. Route 53 offers low query latency for your end users.
C. Route 53 is designed to automatically answer queries from the optimal location depending on network conditions.
D. Route 53 supports Domain Name System Security Extensions (DNSSEC).
Answer: D
Explanation:
Explanation/Reference:
Explanation:
Amazon Route 53 provides highly available and scalable Domain Name System (DNS), domain name registration, and health-checking web services.
Route 53 is built using AWS's highly available and reliable infrastructure. The globally distributed nature of our DNS servers helps ensure a consistent ability to route your end users to your application by circumventing any Internet or network related issues. Route 53 is designed to provide the level of dependability required by important applications. Using a global anycast network of DNS servers around the world, Route 53 is designed to automatically answer queries from the optimal location depending on network conditions. As a result, the service offers low query latency for your end users. Amazon Route 53 does not support Domain Name System Security Extensions (DNSSEC) at this time.
Reference: https://aws.amazon.com/route53/faqs/

NEW QUESTION: 4
Click the Exhibit button.

Given the customer's programmed database shown in the exhibit and AC 1 = 9, over which RLI will a call placed to 9-1-912-534-2222 complete?
A. call will not complete as dialed
B. RLI 4
C. RLI 2
D. RLI 9
E. RLI 3
Answer: B