Expert Network Engineering Interview Training 1 ⋆ IpCisco

Expert Network Engineering Training 1

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Question 1

What are the BGP Packets and Their Main Duty?

A	KEEPALIVE : Handshake in regular intervals.
B	OPEN : Establishes a peering session.
C	UPDATE : Announces new routes or withdrawing previously announced routes.
D	QUALIFY : Differentiates differetn packet types
E	SYN : Provide Synronization of OSPF Network

Question 2

Why is BFD Used?

A	A mechanims used to provide redundancy with routing protocols.
B	A mechanims used to provide network management instead of the protocol snmp.
C	A mechanims used to provide quality of service in the network.
D	A mechanims used to provide rapid link failure detection instead of routing protocol hellos.

Question 3

Next Hop remains unchanged when route is advertised to IBGP peer; however, it is changed when it is advertised to EBGP peer by default. .... Command provides to change next hop, while advertising, as a local route.

A	peer
B	network
C	neighbor
D	next-hop-self

Question 4

What are the States of OSPF ?

A	Start
B	Exchange
C	Init
D	Down
E	Loading
F	Extart
G	Two-way
H	Loading
I	Syn

Question 5

How Many NAT Types are There? What are Their Roles?

A	PAT (NAT overload) (many-to-many translation, traffic with unique port numbers used with single public address)
B	Static NAT (one-to-one translation of ports or addresses)
C	Normal NAT (one-to-many translation of ports or addresses)
D	Dynamic NAT (many-to-many translation, used with public address pool)
E	NNAT (many-to-many translation, used with unique port numbers)

Question 6

Which Address Types do we use for MP-BGP? How Many Bits is This Address?

A	VPN 64 bits address
B	VPN 128 bits address
C	VPNv4 32 bits address
D	VPNv4 32 bits address

Question 7

What are the OSPF Packet Types?

A	TCN (Topology Change Notification)
B	LSAck (Acknowledgement)
C	LSR (LSU request)
D	DBD (Summary of LSDB)
E	LSU (Updates with multiple LSAs)
F	Hello (Neighbour identification, keepalive)
G	LSDB (Link State Database)

Question 8

There is no Broadcast in IPv6. In IPv4, broadcast cause to send the packets to all nodes even if they do not care. This cause an unecessary trafffic. In IPv6, instead of broadcast, ...... is used.

A	Anycast
B	None of them
C	Multicast
D	Unicast

Question 9

One route is Coming From a EBGP Peer. Is This Route Shared with IBGP peers?

A	Yes
B	No

Question 10

What are the First 6 Steps of BGP Path Selection Algorithm?

A	1)Self-Originated 2)Origin 3)Weight 4)AS Path 5) Local Preference 6)MED
B	1)Weight 2)Local Preference 3)Self-Originated 4)AS Path 5) Origin 6)MED
C	1)Origin 2)Local Preference 3)AS Path 4)Self-Originated 5)Weight 6)MED
D	1)MED 2)Self-Originated 3)Local Preference 4)AS Path 5) Origin 6)Weight

Question 11

What are the Router Types Used in MPLS Networks?

A	PE (Provider Edge Router)
B	P (Provider Router)
C	PR (Pop Router)
D	SR (Swap Router)

Question 12

Which Ones are True for Route Distinguisher and Route Target?

A	The route distinguisher makes a unique IP address across the MPLS network.
B	The route target defines which prefixes get imported and exported on the P routers.
C	The route distinguisher makes a unique VPNv4 address across the MPLS network.
D	The route target defines which prefixes get imported and exported on the PE routers.

Question 13

What are the Opaque LSAs? Why are they used?

A	LSA Type 9 - Used for OSPFv3
B	LSA Type 7 - Used to extend OSPF functionality and MP-BGP
C	LSA Type 11 - Used to extend OSPF functionality but no advertised to stub areas.
D	LSA Type 10 - Used to extend OSPF functionality and MPLS-TE
E	LSA Type 8 - Used for OSPFv2

Question 14

An ..... acts as the meeting place for sources and receivers of multicast data in a PIM-SM network. In this network, sources must send their traffic to the RP. This traffic is then forwarded to receivers down a shared distribution tree.

A	Broadcast Router
B	Source Router
C	Rendezvous Point
D	LAN Switch

Question 15

What are the Label Distribution Protocols?

A	PIM-SM
B	IGMP
C	LDP
D	RSVP-TE

Question 16

Which Ones are some of the Address Types of IPv6?

A	Unique-Local IPv6 Addresses
B	IPv6 Associated Multicast Addresses
C	Link-Local IPv6 Addresses
D	All of them
E	Global Unicast IPv6 Addresses

Question 17

Why do We use Route Reflector in BGP network?

A	It is used to provide redundancy in BGP networks.
B	It is used to eliminate the full mesh requirement for building iBGP networks.
C	It is used to provide eBGP neighbourship establishment.
D	It is used to enhance BGP network.

Question 18

Which Types of Routers are There in an OSPF Network?

A	ABR (Area Border Router)
B	PE Router
C	P Router
D	Backbone Router
E	Internal Router
F	ASBR (Autonomous System Boundary Router)

Question 19

What are the Routing Protocols Used with IPv6?

A	RIP for IPv6
B	OSPFv2
C	OSPFv3
D	EIGRP for IPv6
E	MP-BGPv4
F	Integrated ISIS for IPv6

Question 20

What is DR? And What is it Used For?

A	A Central Router in OSPF Network that provide OSPF Routing Exchange between All OSPF Routers
B	A Normal Router in OSPF Network that provide OSPF Routing Facilities
C	A Security Router in OSPF Network that provide OSPF Network Redundancy
D	A Backup Router in OSPF Network that provide connection in case of an emergency

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gokhankosem

Gokhan Kosem is a Network Engineer, Instructor and the Founder of IPCisco.com with 15+ years of experience in Cisco, Nokia, Huawei, Juniper, Linux, Service Provider Networks, Routing and Switching technologies.

He has worked on the backbone networks of major service providers and network vendors including Nortel, Alcatel-Lucent (Nokia) and has extensive hands-on experience with Cisco, Huawei, Juniper and Nokia networking technologies.

He has trained thousands of networking students worldwide through IPCisco.com, Udemy, books, labs, quizzes, and educational content across multiple social media platforms.

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Expert Network Engineering Interview Training 1

Expert Network Engineering Training 1

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