Expert Network Engineering Interview Training 1 ⋆ IpCisco

Expert Network Engineering Training 1

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Question 1

What are the OSPF Packet Types?

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

Question 2

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	None of them
B	Unicast
C	Multicast
D	Anycast

Question 3

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	Source Router
B	Rendezvous Point
C	Broadcast Router
D	LAN Switch

Question 4

Why do We use Route Reflector in BGP network?

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

Question 5

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

Question 6

Which Types of Routers are There in an OSPF Network?

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

Question 7

Why is BFD Used?

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

Question 8

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	next-hop-self
B	neighbor
C	peer
D	network

Question 9

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

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

Question 10

What are the Routing Protocols Used with IPv6?

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

Question 11

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

A	No
B	Yes

Question 12

Which Ones are some of the Address Types of IPv6?

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

Question 13

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

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

Question 14

What are the Label Distribution Protocols?

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

Question 15

What are the States of OSPF ?

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

Question 16

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

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

Question 17

What are the Router Types Used in MPLS Networks?

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

Question 18

What are the BGP Packets and Their Main Duty?

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

Question 19

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 Security Router in OSPF Network that provide OSPF Network Redundancy
C	A Backup Router in OSPF Network that provide connection in case of an emergency
D	A Normal Router in OSPF Network that provide OSPF Routing Facilities

Question 20

What are the Opaque LSAs? Why are they used?

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

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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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