Expert Network Engineering Interview Training 1 ⋆ IpCisco

Expert Network Engineering Training 1

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Question 1

What are the Router Types Used in MPLS Networks?

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

Question 2

What are the Routing Protocols Used with IPv6?

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

Question 3

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

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

Question 4

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 PE 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 P routers.

Question 5

Why is BFD Used?

A	A mechanims used to provide quality of service in the network.
B	A mechanims used to provide redundancy with routing protocols.
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 6

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	LAN Switch
B	Rendezvous Point
C	Broadcast Router
D	Source Router

Question 7

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	network
B	neighbor
C	next-hop-self
D	peer

Question 8

What are the OSPF Packet Types?

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

Question 9

What are the Label Distribution Protocols?

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

Question 10

What is DR? And What is it Used For?

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

Question 11

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

A	Yes
B	No

Question 12

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

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

Question 13

What are the States of OSPF ?

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

Question 14

What are the Opaque LSAs? Why are they used?

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

Question 15

Which Types of Routers are There in an OSPF Network?

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

Question 16

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

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

Question 17

Which Ones are some of the Address Types of IPv6?

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

Question 18

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	Multicast
C	Unicast
D	None of them

Question 19

Why do We use Route Reflector in BGP network?

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

Question 20

What are the BGP Packets and Their Main Duty?

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