ECP-206 Exam Info and Free Practice Test All-in-One Exam Guide Jun-2024
Pass Ericsson ECP-206 Actual Free Exam Q&As Updated Dump Jun 17, 2024
NEW QUESTION # 20
What is the function of LSR from an LDP perspective?
- A. The LSR distributes labels of LDP to its FEC peers.
- B. The LSR distributes labels of FEC to its LDP peers.
- C. The LSR distributes packets of LDP to its FEC peers.
- D. The LSR distributes packets of FEC to its LDP peers.
Answer: B
Explanation:
Explanation
The function of LSR from an LDP perspective is to distribute labels of FEC to its LDP peers. LSR stands for Label Switching Router, which is a router that forwards packets based on labels rather than IP addresses in an MPLS network. LDP stands for Label Distribution Protocol, which is a protocol that distributes labels for MPLS forwarding along the shortest path calculated by an IGP. FEC stands for Forwarding Equivalence Class, which is a group of packets that are forwarded in the same manner by an LSR. An LSR uses LDP to advertise the label mappings for each FEC to its LDP peers, which are other LSRs that have established an LDP session with it12.
References: Ldp | Microsoft Learn, Label Distribution Protocol - Wikipedia
NEW QUESTION # 21
What is an important difference between OSPF and IS-IS?
- A. OSPF is a link state protocol, while IS-IS is a distance vector protocol.
- B. OSPF is a distance vector protocol, while IS-IS is a link state protocol.
- C. OSPF runs directly on IP, while IS-IS runs directly on Ethernet.
- D. OSPF runs directly on Ethernet, while IS-IS runs directly on IP.
Answer: C
Explanation:
Explanation
OSPF runs directly on IP, while IS-IS runs directly on Ethernet. This means that OSPF uses IP addresses to identify routers and links, while IS-IS uses MAC addresses or other link-layer identifiers. OSPF also requires an IP header for each packet, while IS-IS does not. Both OSPF and IS-IS are link state protocols, which means that they flood information about the network topology to all routers in the same area or domain. References: Ericsson IP Networking - Routing Protocols, Ericsson Router 6000 Series - Ericsson
NEW QUESTION # 22
Which router function advertises external routes in OSPF?
- A. ABR
- B. ASBR
- C. designated router
- D. backbone router
Answer: B
Explanation:
Explanation
The router function that advertises external routes in OSPF is ASBR, which stands for Autonomous System Boundary Router. An ASBR is a router that connects an OSPF domain to another routing domain, such as another OSPF domain or a different routing protocol domain. An ASBR can redistribute routes from other routing domains into OSPF as external routes, which are carried in type 5 or type 7 LSAs. External routes have two types: E1 and E2. E1 routes include the cost from the ASBR to the destination, while E2 routes only include the cost advertised by the ASBR34.
References: OSPF External Routes IpCisco, OSPF External Route selection algorithm - Cisco Community
NEW QUESTION # 23
Which route type is restricted in an OSPF stub area?
- A. Type 5
- B. Type 2
- C. Type 3
- D. Type 1
Answer: A
Explanation:
Explanation
The route type that is restricted in an OSPF stub area is type 5. Type 5 LSAs are external LSAs that are generated by ASBRs to advertise routes from other routing domains or protocols into OSPF. Type 5 LSAs are flooded throughout the OSPF domain by default, except in stub areas. Stub areas are special OSPF areas that block type 5 LSAs from entering the area in order to reduce the size of the LSDB and the routing table. Stub areas only receive information about intra-area routes (type 1 and 2 LSAs), inter-area routes (type 3 LSAs), and a default route (type 3 LSA with destination 0.0.0.0/0) from the ABRs910.
References: Introduction to OSPF Stub Areas - NetworkLessons.com, What Are OSPF Areas and Virtual Links? - Cisco
NEW QUESTION # 24
Which protocol would be used to bundle multiple Ethernet ports into a virtual link with an aggregated bandwidth?
- A. ERP
- B. VRRP
- C. LACP
- D. RSTP
Answer: C
Explanation:
Explanation
The protocol that would be used to bundle multiple Ethernet ports into a virtual link with an aggregated bandwidth is LACP, which stands for Link Aggregation Control Protocol. LACP is a protocol that allows two or more devices to negotiate the formation of a link aggregation group (LAG), also known as an EtherChannel or a port channel. A LAG combines multiple physical links into one logical link that provides increased bandwidth, load balancing, and redundancy. LACP is defined in IEEE 802.3ad and 802.1AX standards12.
References: Link Aggregation Control Protocol - Wikipedia, What is "link aggregation" and how does it benefit your network? | PC Gamer
NEW QUESTION # 25
What is the CLI command to obtain the software version in Ericsson Router 6000 products?
- A. show sysstat
- B. show log
- C. show release
- D. show version
Answer: D
Explanation:
Explanation
The CLI command to obtain the software version in Ericsson Router 6000 products is show version. This command displays information about the software release, the hardware model, the serial number, the uptime, and the boot image of the router. References: [ERICSSON SMARTEDGE 600 HARDWARE MANUAL Pdf Download | ManualsLib], Ericsson Router 6000 Series - Ericsson
NEW QUESTION # 26
Which network is reserved as a private network according to RFC1918?
- A. 172.16.1.0/9
- B. 172.15.1.0/24
- C. 10.254.1.0/24
- D. 193.168.1.0/24
Answer: C
Explanation:
Explanation
According to RFC1918, there are three network blocks reserved as private networks that are not allocated to any specific organization and are not routable on the public Internet. These are:
10.0.0.0/8 (10.0.0.0 - 10.255.255.255)
172.16.0.0/12 (172.16.0.0 - 172.31.255.255)
192.168.0.0/16 (192.168.0.0 - 192.168.255.255)
Out of these, only option B (10.254.1.0/24) falls within one of the private network blocks (10.0.0.0/8). Option A (172.16.1.0/9) is not valid because it exceeds the /12 prefix length of the private network block (172.16.0.0/12). Option C (193.168.1.0/24) is not valid because it does not belong to any of the private network blocks, and is actually assigned to RIPE NCC as a public network block . Option D (172.15.1.0/24) is also not valid because it does not belong to any of the private network blocks, and is actually assigned to ARIN as a public network block . References: RFC 1918: Address Allocation for Private Internets, Private network - Wikipedia, [RIPE NCC IPv4 Address Space Chart], [ARIN WHOIS Database Search]
NEW QUESTION # 27
Which two label actions are performed by a P router? (Choose two.)
- A. drop
- B. php
- C. push
- D. swap
Answer: B,D
Explanation:
Explanation
A P router is a provider router that is part of the service provider's core network in an MPLS environment. A P router does not have any customer routes or VPN information, but only has information about how to reach other P routers and PE routers in the same MPLS domain. A P router performs label switching, which means that it forwards labeled packets based on their top label in the label stack. A P router can perform two possible label actions:
Swap: The P router replaces the incoming label with a new label that corresponds to the next hop along the label-switched path (LSP). The new label is determined by looking up the label forwarding information base (LFIB) based on the incoming label and interface.
PHP: The P router removes the top label from the packet at the penultimate hop before reaching the egress PE router. This is done to avoid an extra lookup on the egress PE router, which can forward the packet based on its IP header or another label in the stack.
A P router does not perform push or drop actions on labels. A push action means adding one or more labels to the packet, which is done by an ingress PE router when initiating an LSP. A drop action means discarding a packet, which is done by any router when there is no matching entry in its LFIB or routing table. References: Provider (P) Router in IP MPLS Network - Cisco Community, MPLS Fundamentals: Forwarding Labeled Packets - Cisco Press, MPLS Label Switching | MPLS Operation | Push, Swap,Push IPCisco
NEW QUESTION # 28
What are two roles of the DHCP protocol in a network? (Choose two.)
- A. It provides the authorization function to the network.
- B. It provides information about the number of hops between the source and the destination.
- C. It is used by hosts to obtain the IP address and other parameters from the DHCP server.
- D. It is used to inform hosts about the default gateway.
Answer: C,D
Explanation:
Explanation
Two roles of the DHCP protocol in a network are:
It is used by hosts to obtain the IP address and other parameters from the DHCP server. DHCP stands for Dynamic Host Configuration Protocol, which is a protocol that provides automatic and centralized management of IP addresses and other network configuration parameters for devices connected to a network. A host that needs an IP address can send a request to a DHCP server, which will assign an available IP address from a pool and lease it to the host for a certain period of time34.
It is used to inform hosts about the default gateway. The default gateway is the IP address of the router that connects the host to other networks. The default gateway is one of the parameters that can be delivered by the DHCP server to the host, along with other parameters such as subnet mask, DNS server, domain name, etc. The host can use the default gateway to send packets to destinations outside of its local network34.
References: What Is DHCP? (Dynamic Host Configuration Protocol) - Lifewire, Dynamic Host Configuration Protocol - Wikipedia
NEW QUESTION # 29
In OSPFv2, which route characteristic is used to determine the best path?
- A. jitter
- B. cost
- C. packet loss
- D. delay
Answer: B
Explanation:
Explanation
In OSPFv2, the route characteristic that is used to determine the best path is the cost. The cost is a metric that represents the link bandwidth, delay, reliability, or other factors. The cost is inversely proportional to the bandwidth, meaning that a higher bandwidth link has a lower cost. The cost of a route is calculated by adding the costs of all links along the path. OSPFv2 uses the following formula to calculate the cost of an interface:
Cost = Reference bandwidth / Interface bandwidth in bps
The reference bandwidth is a constant value that can be configured by the network administrator. By default, it is 100 Mbps. The interface bandwidth is the actual bandwidth of the interface in bits per second. For example, if an interface has a bandwidth of 10 Mbps, its cost would be 100 Mbps / 10 Mbps = 101415.
OSPFv2 does not use jitter, packet loss, or delay as route characteristics to determine the best path. Jitter is the variation in latency or delay between packets. Packet loss is the percentage of packets that are dropped or corrupted during transmission. Delay is the time it takes for a packet to travel from source to destination. These characteristics are not part of the OSPFv2 protocol and are not advertised in OSPFv2 LSAs1617.
References: OSPF Metric cost Calculation Formula Explained - ComputerNetworkingNotes, OSPF Cost - OSPF Routing Protocol Metric Explained - Study-CCNA, Open Shortest Path First - Wikipedia, OSPF Metric
= Cost - Cisco
NEW QUESTION # 30
What is used for Ethernet loop avoidance?
- A. Split-Horizon
- B. Time-to-Live (TTL)
- C. Poison-Reverse
- D. Spanning-Tree
Answer: D
Explanation:
Explanation
Spanning-Tree is used for Ethernet loop avoidance. Spanning-Tree is a protocol that prevents loops in Ethernet networks by creating a logical tree topology of the network switches. Spanning-Tree blocks some of the redundant links between switches to ensure that there is only one active path between any two nodes in thenetwork. Spanning-Tree also detects and recovers from link failures by activating alternative paths when needed56.
References: Network loops and loop avoidance - Medium, Spanning Tree Protocol - Wikipedia
NEW QUESTION # 31
Which action will influence BGP route selection within your AS?
- A. reducing number of hops in the network
- B. changing the default link metric
- C. changing the default value of the local preference
- D. changing the administrative distance for eBGP
Answer: C
Explanation:
Explanation
The action that will influence BGP route selection within your AS is changing the default value of the local preference attribute. The local preference attribute is used to indicate the preference of a path among multiple paths learned from different external BGP neighbors or autonomous systems (ASes). The higher the local preference value, the more preferred the path is within your AS, and vice versa. The default value of local preference is 100, but you can change it using route maps or other configuration methods on your BGP routers. References: Ericsson IP Networking - Routing Protocols, BGP Attributes and Path Selection, BGP Local Preference Attribute: Controlling Traffic Like a Pro
NEW QUESTION # 32
What network information is, without additional configuration, shared between two iBGP neighbors by default?
- A. IP address information of loopback interfaces
- B. IP address information from all directly connected interfaces
- C. BGP routes learned from eBGP neighbors
- D. BGP routes learned from an OSPF neighbor
Answer: C
Explanation:
Explanation
iBGP works by exchanging routing information between two or more routers within an AS. Each router sends its own routing table to its neighbors, which contains information about the networks it knows and how they can be reached from that router. By default, iBGP neighbors only share BGP routes learned from eBGP neighbors, which are routers in different ASes. This is because iBGP assumes that all routers within an AS have consistent internal routing information provided by an IGP, such as OSPF or IS-IS. Therefore, iBGP neighbors do not need to share IP address information of loopbackinterfaces or directly connected interfaces, unless explicitly configured to do so by using commands such as neighbor update-source or network.
References: iBGP Ultimate Guide | How iBGP Is Different From eBGP, Ericsson IP Networking - Routing Protocols
NEW QUESTION # 33
Review the exhibit.
Referring to the exhibit, which two Ericsson routers support the 100GE interface? (Choose two.)
- A. Router 6273
- B. Router 6675
- C. Router 6672
- D. Router 6471
Answer: B,C
Explanation:
Explanation
Referring to the exhibit, the two Ericsson routers that support the 100GE interface are Router 6675 and Router
6672. The 100GE interface is a high-speed Ethernet interface that operates at 100 gigabits per second. The Ericsson Router 6000 series is a family ofrouters that provide IP transport for mobile and fixed networks. The Router 6675 is a 5G combined access and E-RAN switch with 100GE interfaces and 320Gb forwarding capacity. The Router 6672 is a high-capacity metro aggregation router with 100GE interfaces and 1.6Tb forwarding capacity12.
References: Router 6000 Series - Ericsson, New Ericsson Router 6000 series couples radio and IP transport for
5G future - Global Brands Magazine
NEW QUESTION # 34
Which statement is true about LDP?
- A. LDP performs routing functions along with IGP.
- B. LDP and IGP both exchange their databases every 30 seconds.
- C. LDP relies on IGP for all routing-related decisions.
- D. LDP and IGP both exchange their databases every 60 seconds.
Answer: C
Explanation:
Explanation
LDP relies on IGP for all routing-related decisions. LDP is a protocol that distributes labels in an MPLS environment, but it does not perform any routing functions. LDP uses the underlying routing information provided by an IGP, such as OSPF or IS-IS, to forward label packets. LDP and IGP do not exchange their databases at regular intervals, but rather use hello messages to maintain adjacencies and sessions. References: Ericsson IP Networking - Routing Protocols, Label Distribution Protocol - Wikipedia
NEW QUESTION # 35
Review the exhibit.
In the exhibit, which action is performed by router R3 for traffic arriving from router R2 towards router R4?
- A. swap
- B. pop
- C. PHP
- D. push
Answer: C
Explanation:
Explanation
In the exhibit, the action performed by router R3 for traffic arriving from router R2 towards router R4 is PHP, which stands for penultimate hop popping. PHP is a process in which the penultimate hop router (the router before the egress router) removes the top label from an MPLS packet before forwarding it to the egress router.
This reduces the label stack depth of the packet and relieves the egress router from performing a label lookup operation. In the exhibit, router R3 is the penultimate hop for traffic arriving from router R2 towards router R4. Router R3 will perform a PHP operation, removing the top label from the incoming packet before forwarding it to router R478.
References: PHP Tutorial - W3Schools, PHP: Downloads
NEW QUESTION # 36
IPv6 link-local addresses are designed to be used in which three situations? (Choose three.)
- A. when routers are not present
- B. addressing on a single link for purposes such as auto-address configuration
- C. for neighbor discovery
- D. by routers to forward packets with link-local source addresses to other links
- E. for local IP communication on the IPv6 capable routers
Answer: B,C,E
Explanation:
Explanation
IPv6 link-local addresses are designed to be used in three situations: for neighbor discovery, for local IP communication on the IPv6 capable routers, and for addressing on a single link for purposes such as auto-address configuration. Neighbor discovery is a protocol that allows IPv6 nodes to discover each other and learn their link-layer addresses on a local network. Neighbor discovery uses link-local addresses to send and receive messages such as router advertisements, router solicitations, neighbor advertisements, and neighbor solicitations34. Local IP communication on the IPv6 capable routers refers to the ability of routers to exchange routing information or management traffic using their link-local addresses as source and destination addresses. This reduces the need for global unicast addresses on router interfaces that are not reachable from outside the local network35. Addressing on a single link for purposes such as auto-address configuration refers to the use of link-local addresses to enable IPv6 nodes to obtain an address without manual configuration or a DHCP server. Link-local addresses can be automatically derived from the interface identifier in the modified EUI-64 format or randomly generated. Link-local addresses can also be used to test the connectivity of a link before obtaining a global unicast address36.
References: Understand the IPv6 Link-Local Address - Cisco, Link Local Address - GeeksforGeeks, IPv6 Address Types | Link-Local, Global Unicast, etc. IPCisco, MPLS Label Distribution Protocol Commands - Cisco
NEW QUESTION # 37
How do peers recognize each other's ability to use MP-BGP extensions?
- A. They advertise the ability using the capabilities field during the session establishment.
- B. They advertise the ability using the capabilities field in the update packet.
- C. They advertise the ability using the capabilities field in the End-of-RIB marker.
- D. They advertise the ability using the capabilities field in the hello packet.
Answer: A
Explanation:
Explanation
Peers recognize each other's ability to use MP-BGP extensions by advertising the ability using the capabilities field during the session establishment. MP-BGP is an extension to BGP that allows BGP to carry routing information for multiple network layer protocols, such as IPv6, VPNv4, multicast, etc. To support MP-BGP, peers need to exchange their capabilities during the session establishment phase, which consists of three steps:
open, keepalive, and update. In the open message, peers can include an optional parameter called capabilities, which indicates what kind of address families and subsequent address families they can support. If both peers agree on a common set of capabilities, they can proceed to exchange routing information for those address families using update messages56.
References: Use of MP-BGP Extensions for IPv6 Interdomain Routing, MP-EBGP Configuration Example - Cisco
NEW QUESTION # 38
Which two statements are true regarding the LSP? (Choose two.)
- A. The LSP refers to a sequence of routers that add. remove, or change label values along the path.
- B. The LSP refers to a sequence of routers that add, remove, or change label values based on the destination MAC address.
- C. The LSP refers to a sequence of routers that forward the MPLS packet based on labels.
- D. The LSP refers to a specific label assigned to a packet by the LSR for a destination.
Answer: A,C
Explanation:
Explanation
Two statements that are true regarding the LSP are:
The LSP refers to a sequence of routers that forward the MPLS packet based on labels. An LSP is a Label Switched Path, which is a path through an MPLS network that is established by signaling protocols such as LDP or RSVP-TE. An LSP consists of a sequence of routers (called Label Switching Routers or LSRs) that forward packets based on labels rather than IP addresses. Labels are short fixed-length identifiers that are attached to packets at the ingress router and removed at the egress router. Labels can be swapped or popped at intermediate routers according to their label forwarding tables78.
The LSP refers to a sequence of routers that add, remove, or change label values along the path. As mentioned above, an LSP consists of a sequence of routers that forward packets based on labels. Along the path, different routers may perform different operations on the labels depending on their role and configuration. The ingress router adds one or more labels to the packet before sending it into the MPLS network. The egress router removes all labels from the packet before sending it out of the MPLS network. The intermediate routers may swap one label with another label according to their label forwarding tables. This process is called label switching78.
References: MPLS Fundamentals: 3 - MPLS Packet Forwarding, Multiprotocol Label Switching - Wikipedia
NEW QUESTION # 39
What is the correct ordering (outer to inner) of packet headers in an IP/MPLS packet?
- A. IP, MPLS, Ethernet
- B. Ethernet, MPLS, IP
- C. Ethernet, IP, MPLS
- D. MPLS, IP, Ethernet
Answer: B
Explanation:
Explanation
The correct ordering (outer to inner) of packet headers in an IP/MPLS packet is Ethernet, MPLS, IP. An IP/MPLS packet is a packet that is encapsulated with an MPLS label stack between the Ethernet header and the IP header. The Ethernet header contains the source and destination MAC addresses and the EtherType field that indicates the type of the payload. The MPLS label stack contains one or more labels that are used for forwarding decisions by the MPLS routers. Each label consists of four fields: label value, experimental bits, bottom of stack, and time to live. The IP header contains the source and destination IP addresses and other information for routing and fragmentation. The order of the headers is important because it determines how the packet is processed by different devices in the network12.
References: MPLS Label Stack - Cisco, MPLS Fundamentals: 3 - MPLS Packet Forwarding
NEW QUESTION # 40
In an Ericsson Router 6000, which command is used to begin making changes to the router settings?
- A. commit
- B. set metric
- C. capabilities
- D. configure
Answer: D
Explanation:
Explanation
The command that is used to begin making changes to the router settings in an Ericsson Router 6000 is configure. This command enters the configuration mode, where various commands can be used to modify the router parameters, such as interfaces, protocols, services, security, etc. To exit the configuration mode, the command end can be used. To save the changes made in the configuration mode, the command commit can be used56.
References: Router 6000 Series - Ericsson, Ericsson Router 6000 series (6471/6672/6675) Commands for
2G/3G/4G/5G technologies... - YouTube
NEW QUESTION # 41
Review the exhibit.
A service provider wants to provide L3VPN for two customers (indicated by red and green in the exhibit).
Referring to the exhibit, which statement is correct?
- A. The service provider's P routers are not aware of the customers' routes.
- B. MP-BGP should be configured on all the service provider's routers (Ps and PEs).
- C. LDP must be configured between PE and CE
- D. The two customers cannot use overlapping IP prefixes.
Answer: A
Explanation:
Explanation
Referring to the exhibit, the correct statement is that the service provider's P routers are not aware of the customers' routes. This is because P routers only need to forward MPLS packets based on their labels, without looking into their IP headers or VPN information. The P routers do not have any VRFs configured for the customers, nor do they participate in MP-BGP sessions with other PE routers. The PE routers are responsible for maintaining VRFs for each customer and for exchanging VPN routes with other PE routers using MP-BGP910.
References: Layer 3 VPNs (L3VPN) - Cisco, MPLS VPN - Wikipedia
NEW QUESTION # 42
Which device will fragment IPv6 packets?
- A. router
- B. firewall
- C. source host
- D. destination host
Answer: C
Explanation:
Explanation
The device that will fragment IPv6 packets is the source host. Fragmentation is a process of dividing a large packet into smaller pieces that can fit the maximum transmission unit (MTU) of the network link. In IPv4, fragmentation can be performed by either the source host or any intermediate router along the path. However, in IPv6, fragmentation is only allowed at the source host, and routers are not allowed to fragment packets. This reduces the processing overhead and complexity at routers and avoids potential fragmentation attacks. If a router receives an IPv6 packet that is too large for the next-hop link, it will drop the packet and send an ICMPv6 Packet Too Big message back to the source host56.
References: IPv6 address - Wikipedia, IPv6 Fragmentation - Cisco
NEW QUESTION # 43
......
Online Questions - Valid Practice ECP-206 Exam Dumps Test Questions: https://www.suretorrent.com/ECP-206-exam-guide-torrent.html
Latest ECP-206 Actual Free Exam Updated 62 Questions: https://drive.google.com/open?id=1O7h3kWCtJdT6QY7EISsjb_zXDU6-jFLF