EMT Practice Test

1. Question Content...

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Question1: Click the exhibit.

Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP
sessions. Which of the following configurations is required on router A so that router B can exchange traffic
with router D?

Question2: Click the exhibit.

Which of the following is a valid BGP configuration for router R2?

Question3: Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the
most likely relationship between the ISPs?

Question4: Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5 with local preferences 100, 200 and 500
respectively. Router R3 advertises prefix 192.168.1.0/27 to routers R1, R2 and R5 which are configured
with advertise-external. Routers R4 and R6 are both configured with "add-paths ipv4 send 2 receive".
Which routes to 192.168.0.1/27 is router R4 expected to have in its BGP routing table?

Question5: The configuration of an Alcatel-Lucent 7750 SR is given below. Router Rl has established BGP sessions
with routers R2 and R3. Which of the following is TRUE?

Question6: Which of the following is NOT a BGP message type?

Question7: Which of the following is the minimum requirement for an AS to be considered multi-homed?

Question8: From what range are 16-bit private AS numbers selected?

Question9: Which of the following is FALSE regarding the 16-bit public autonomous system numbers?

Question10: An Alcatel-Lucent 7750 SR receives a route from an eBGP peer with a MED value of 500. What
MED value is sent to iBGP peers?

Question11: Click the exhibit.

If router A originates a BGP route for prefix 192.168.0.1/27, what will the update contain when it reaches
router B?

Question12: Which of the following statements regarding route reflectors is TRUE?

Question13: Click the exhibit.

AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541
with "as-set" enabled. Which of the following is TRUE regarding the aggregate route received by router
R7?

Question14: Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP. Which of the following AS Paths would the prefix
192.168.1.0/27 contain when viewed on router R8?

Question15: Which of the following best describes the purpose of advertise-external?

Question16: Click the exhibit.

Over which BGP session will router B learn the 10.1.1.0/24 prefix?

Question17: Which of the following is TRUE?

Question18: Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Assume routers R4, R5 and R6 are configured with addpaths
ipv4 send 2 receive". Which routes to 192.168.0.1/27 is router R6 expected to have in its BGP routing
table?

Question19: Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local
preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the
expected output of "show router bgp routes" on router R2?

Question20: Click the exhibit.

Given the following configuration of router R1, what can be said about the function of each of AS 65540s
routers?

Question21: What kind of BGP attribute is the Local Preference?

Question22: What are the well-known mandatory BGP attributes?

Question23: Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Router R3 advertises the prefix 192.168.1.0/27 to
routers R5 and R6. Assuming that routers R1, R2 and R4 are configured with "add-paths ipv4 send 2
receive", what is the expected output of "show router bgp routes" when executed on router R2?

Question24: Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the
most likely relationship between ISP 1 and the other ISPs?

Question25: Which of the following statements regarding BGP Add-Paths is FALSE?

Question26: What kind of BGP attribute is the Multi_Exit_Disc?

Question27: Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local
preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that router R6 is configured with "advertise-external", what is the expected output of "show
router bgp routes" when executed on router R5?

Question28: Click the exhibit.

Router R2 receives a route to 192.168.4.0/29 from router R4 and sets the local preference to 110.
Router R1 receives the route to 192.168.4.0/29 from router R3, and sets the local preference to
80. There is a full iBGP mesh in AS 65540, but router R5 only has a physical connection to router R1.
Which path does traffic destined to 192.168.4.0/29 take from router R5?

Question29: Which of the following prefix-lists is the most specific match for prefix 172.31.2.1/24?

Question30: Click the exhibit.

Assuming router A is configured with "next-hop-self", what does the BGP update for prefix 192.168.0.1/27
contain when it arrives at router B?

Question31: Consider two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system address 10.10.10.1, and router
R2 has system address 10.10.10.2. Which of the following configurations on router R2 can establish a
BGP session with router R1?

Question32: A router in AS 65100 receives two BGP routes. The first route is for 138.1.1.0/24 with an AS Path of 65200
65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The second route is for
138.1.0.0/16 with an AS Path of 65500 65300, Local Preference of 150, MED of 100, and router ID
10.1.1.1. Assuming all other attributes are equal, which route would be used to forward an IP packet with
destination IP address 138.1.1.1?

Question33: Click the exhibit.

Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP
2?

Question34: A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a route from BGP
for 10.0.0.0/8. Both routes have reachable next hops. Which of the following is TRUE?

Question35: Click the exhibit.

Routers RR1 and RR2 are route reflectors with the same cluster-ID. How many updates for prefix
192.168.1.0/27 are received at router RR1?

Question36: Which of the following prefix lists include prefixes 192.168.128.0/17 and 192.168.64.0/18?

Question37: Which of the following is considered a best practice for BGP address planning?

Question38: What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-
Lucent 7750 SR?

Question39: An Alcatel-Lucent 7750 SR is configured with an export policy to redistribute its directly-connected
networks into BGP. Which of the following databases contains the routes for these networks?

Question40: Click the exhibit.

Routers RR1 and RR2 are route reflectors with the same Cluster-ID. When the update for prefix
192.168.1.0/27 is received at router RA2, what are the Originator_ID and Cluster_List attributes?

Question41: The user of an Alcatel-Lucent 7750 SR wants to see the effect of changing an import policy immediately.
What is the best command to force re-evaluation of the import policy with minimal impact?

Question42: Click the exhibit.

Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router
R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have
a full iBGP mesh. What path does traffic destined to 192.168.1.0/27 take from router R1?

Question43: Click the exhibit.

Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP
update for the 192.168.0.1/27 prefix contain when it arrives at router B?

Question44: When an Alcatel-Lucent 7750 SR receives a BGP route with an AS Path loop, what action is taken by
default?

Question45: Which of the following regarding the atomic aggregate attribute is TRUE?

Question46: Which of the following regarding BGP authentication on the Alcatel-Lucent 7750 SR is FALSE?

Question47: Which of the following is TRUE if a BGP session state is Connect?

Question48: Which of the following regarding BGP confederations is FALSE?

Question49: Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. Which routers must be configured
with the "configure router bgp igp-shortcuts rsvp-te" command?

Question50: Click the exhibit.

Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into
ISP X, which of the following best describes the route advertisement within ISP X?

Question51: Which of the following regarding the connections between eBGP peers is TRUE?

Question52: What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-
Lucent 7750 SR?

Question53: Click the exhibit.

AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541
with "as-set" enabled. Which of the following is TRUE regarding the aggregate route received by router
R7?

Question54: Click the exhibit.

Assume all router-IDs are properly configured, and link-local IPv6 addresses are used to establish the
eBGP sessions. Which of the following is the MINIMAL configuration required on router A so that router B
can exchange traffic with router D?

Question55: Click the exhibit.

Which of the following statements best describes the BGP sessions within the given network?

Question56: Click the exhibit.

Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all
eBGP sessions. Given the following iBGP configuration on router A, what is the Next Hop for prefix
2001:DB8:A:401::1/128 on router B?

Question57: When implementing a BGP policy on an Alcatel-Lucent 7750 SR, which of the following types of address
space would a typical address plan need to cover?

Question58: What class of attribute is Originator_ID?

Question59: A BGP session is in OpenConfirm state. Which of the following messages must be received to transition to
Established state?

Question60: Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of
200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for
prefix 192.168.1.0/27?

Question61: Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be
propagated to?

Question62: Click the exhibit.

Router R6 is a route reflector with clients R1, R2, R4 and R5. R4 receives three routes from router R6 and
is configured with ECMP 3. Given the following BGP configuration on router R4, how many primary and
backup paths will be present in router R4's BGP routing table?

Question63: Which of the following commands would correctly configure the confederation AS number as 65200 with a
member AS of 65202?

Question64: Which of the following regarding the TTL of a BGP message is TRUE?

Question65: Click the exhibit.

If router A originates an update for prefix 192.168.0.1/27, what will the update contain when it reaches
router B?

Question66: BGP is configured on two peers, routers A and B.
Router A is configured with a Hold Time timer of 60
seconds and a Keepalive timer of 25 seconds. Router B is configured with a Hold Time timer of 90
seconds and a Keepalive timer of 70 seconds. What will the active Keepalive timer be on router B?

Question67: Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the
following BGP export policy?

Question68: Which of the following statements about an autonomous system is FALSE?

Question69: Which of the following regarding "well-known discretionary'' BGP attributes is TRUE?

Question70: What is the function of the Cluster_List attribute?

Question71: Which of the following is TRUE if the local state of BGP is OpenConfirm?

Question72: Which of the following statements regarding BGP route selection is TRUE?

Question73: Which of the following AS Paths will match the regular expression "65100."?

Question74: Which of the following statements regarding the Originator_ID attribute is TRUE?

Question75: An autonomous system has 7 routers configured with BGP. How many iBGP sessions are required for a
fully meshed configuration?

Question76: Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the
following BGP export policy?

Question77: Click the exhibit.

When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C.
What action is taken by router B when it receives the update?

Question78: An Alcatel-Lucent 7750 SR is configured with a local preference of 250. If it receives a BGP update with a
local preference of 500, what local preference is sent to its eBGP peers?

Question79: Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local
preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the
expected output of "show router bgp routes on router R1?

Question80: Click the exhibit.

Which of the following can be used by router R4 in AS 65542 to reject all routes originating in AS 65540?

Question81: A BGP router has loopback interfaces 192.168.1.1/27 and 192.168.2.1/27 advertised into BGP using the
following export policy. The "aggregate 192.168.0.0/16" command is executed. What is the effect of this
configuration?

Question82: Which of the following regarding BGP Path Identifier is FALSE?

Question83: Which of the following is NOT considered an option of export policies?

Question84: Which of the following statements regarding BGP control plane convergence is FALSE?

Question85: What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?