A label-edged router (LER) is a PE router. A PE router is a provider edge router, which is a router that connects an MPLS network to a customer network. A LER is a term used in MPLS to describe a router that resides at the ingress and egress points of an MPLS network, handling both labelled and unlabelled packets. A LER performs label operations such as adding, removing, or swapping labels on packets entering or leaving the MPLS network34.
References: What is Label Edge Router (LER)? - Definition from Techopedia, LER - Label Edge Router - Mpirical
Question 17
Which network is reserved as a private network according to RFC1918?
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]
Question 18
Which statement is true about LDP?
Options:
A.
LDP and IGP both exchange their databases every 60 seconds.
B.
LDP and IGP both exchange their databases every 30 seconds.
C.
LDP relies on IGP for all routing-related decisions.
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
Marley
Hey, I heard the good news. I passed the certification exam!
Jaxson(not set)
Yes, I passed too! And I have to say, I couldn't have done it without Cramkey Dumps.
Nadia
Why these dumps are important? Can I pass my exam without these dumps?
Julian(not set)
The questions in the Cramkey dumps are explained in detail and there are also study notes and reference materials provided. This made it easier for me to understand the concepts and retain the information better.
Walter
Yayyy!!! I passed my exam with the help of Cramkey Dumps. Highly appreciated!!!!
Angus(not set)
YES….. I saw the same questions in the exam.
Alaya
Best Dumps among other dumps providers. I like it so much because of their authenticity.
Kaiden(not set)
That's great. I've used other dump providers in the past and they were often outdated or had incorrect information. This time I will try it.
Ayesha
They are study materials that are designed to help students prepare for exams and certification tests. They are basically a collection of questions and answers that are likely to appear on the test.
Ayden(not set)
That sounds interesting. Why are they useful? Planning this week, hopefully help me. Can you give me PDF if you have ?