ERASED TEST, YOU MAY BE INTERESTED ON QoS - Diffserv vs Intserv
COMMENTS |
STATISTICS |
RECORDS
|
|---|
TAKE THE TEST
|
Title of test:
QoS - Diffserv vs Intserv Description: diffserv - class-based / intserv - flow-based Author: Noob Saibot Other tests from this author Creation Date: 14/02/2025 Category: Others Number of questions: 10 |
Share the Test:
New Comment
No comments about this test.
Content:
|
When examining an IPv6 datagram, the presence of the extension header called "length" was found.
The datagram that incorporates this extension header is called: diffserv; jumbogram; fragmentation; content-length; control datagram. Network nodes that implement differentiated services (Diffserv) in IPv4 networks use a code point in the IP header to select a per-hop behavior (PHB) as a specific forwarding treatment for that packet. The most appropriate PHB to create a low-loss, low-latency, low-jitter, and guaranteed bandwidth service for an end-to-end service, considered premium, is hint.: Resource Reservation Protocol (RSVP), a component of the integrated services model, provides a guaranteed bandwidth service. The EF PHB, a key ingredient of DiffServ, supplies this kind of robust service by providing low loss, low latency, low jitter, and assured bandwidth service. EF - Expedited Forwarding. AF - Assured Forwarding. BE - Best-Effort. FIFO - First in First Out. LLQ - Low Latency Queuing. QoS refers to a set of technologies operating on a network to ensure its ability to reliably carry high-priority traffic and applications within limited network capacity. In implementing QoS on IP networks, the DiffServ service is used, which uses a strategy that can be implemented largely on-premises at each router, without any advance configuration and without having to involve the entire path. This approach is known as quality of service based on (A) flow (B) process (C) packet (D) function (E) class. Among the QoS techniques that can be implemented in an IP network, which one has per-hop behavior, uses 6 bits of the IP header to classify the packet by classes, and has express and guaranteed forwarding types? IntServ (Integrated Services) CBWFQ (Class Based Weighted Fair Queueing) LLQ (Low latency Queueing) ToS (Type of Service) DiffServ (Differentiated Services). DiffServ, or differentiated services, is a method used in some networks in an attempt to achieve quality of service for packets of different types. Regarding DiffServ networks, the following is correct: core routers are responsible for reserving resources for different packet flows and are therefore more complex than edge routers. Edge routers are responsible for classifying packets and are therefore more complex than core routers. DiffServ is supported in IPv6 networks, but not in IPv4 networks, due to the absence of a specific field for this purpose in the IPv4 header. A limitation of DiffServ networks is the existence of a central point of failure: the network controller, a logically centralized entity responsible for classifying packets unknown to routers. In countries where legislation advocates the principle of Network Neutrality, such as Brazil, the use of DiffServ is recommended to ensure good quality of service for all users. Regarding the IntServ and DiffServ QoS models, select the CORRECT alternative: The RSVP protocol is used in the IntServ model to reserve resources for specific Traffic Classes. The DiffServ model provides QoS based on Packet Flows. The IntServ model is more scalable than the DiffServ model. Routers that implement DiffServ must display a specific PHB (Per-Hop Behavior) for each DSCP (Differentiated Services CodePoint) field. In order to prioritize VoIP telephony traffic and network control in times of congestion, it is recommended that VoIP marking and DiffServ network control be correctly and respectively equal to: hint: Default Forwarding (DF) PHB — which is typically best-effort traffic Expedited Forwarding (EF) PHB — dedicated to low-loss, low-latency traffic Assured Forwarding (AF) PHB — gives assurance of delivery under prescribed conditions Class Selector PHBs — which maintain backward compatibility with the IP precedence field. telephony: EF - DSCP value: 46 Network control: CS6 - DSCP:48 Low-latency data: AF21, AF22, AF23 - DSCP: 18, 20, 22 CS1 and CS2. AF51 and AF53. EF and CS6. BE and A41. BE and EF. RSVP (resource reservation protocol) is the protocol responsible for reserving resources in the implementation of differentiated services (Diffserv) in a QoS implementation. True Wrong. QoS (Quality of Service) can improve the quality of service delivery that travels over an IP network. Regarding QoS, it is correct to state that the objective of QoS is to prioritize some network services without the need for dedicated bandwidth. the operation of QoS protocols can be summarized in a best-effort service delivery model. the network layer responsible for QoS is the physical layer, since only with a properly designed transmission medium is it possible to deliver quality network services. TCP is one of the protocols that implements QoS, since it offers connection-oriented services. DiffServ (differentiated services) is a field in the IPv4 packet used by QoS techniques to differentiate classes of services. Unter Quality of Service (QoS) versteht man die Fähigkeit, über das Netzwerk übertragene Dienste über Datennetzwerk-Kommunikationstechnologien wie Frame Relay, MPLS, Ethernet und alle anderen Technologien, die das IP-Protokoll verwenden, zu verbessern. Bei Verwendung der Diffserv-Dienstqualitätsrichtlinie in IPv4-Netzwerken zur Definition der Dienstdifferenzierung verwendet der IPv4-Header das Feld Checksum of Service. Flags of Service. Type of Service. Service Classification. Service Priority. |
Report abuse