NRS1 Official Practice Test Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
Consider the exhibit. An Ethernet Local Area Network (LAN) consists of the components
shown in the exhibit. How many broadcast and collision domains are on this LAN? -
CORRECT ANSWER 3 broadcast domains, 9 collision domains (D)
Consider the exhibit. When configuring a static route on router R2, what next hop address
should be used to reach a host on 192.168.1.0/27? - CORRECT ANSWER 10.2.3.3 (D)
Which of the following is the physical infrastructure that provides interconnections between
ISPs? - CORRECT ANSWER An Internet exchange point (B)
What information is part of the encapsulation done at the Link layer? - CORRECT
ANSWER Source and destination MAC addresses (A)
Which TCP/IP layer is responsible for path determination and end-to-end forwarding of
datagrams? - CORRECT ANSWER The Internet layer (C)
Which of the following shows a typical data packet flow when egressing a Nokia 7750 SR? -
CORRECT ANSWER SF/CPM > IOM > MDA > SFP (C)
Which of the following displays the hierarchical structure of the available CLI commands at
the current context level? - CORRECT ANSWER tree (C)
Which of the following is NOT a valid log destination in a Nokia 7750 SR? - CORRECT
ANSWER Main (A)
What operation is performed by an iLER when it receives a packet? - CORRECT
ANSWER It pushes a new MPLS label and forwards the packet to the next LSR. (A)
, Which of the following statements about the service label is FALSE? - CORRECT
ANSWER A P device performs a service label swap operation. (D)
Which of the following statements about VPWS is FALSE? - CORRECT
ANSWER Each VPWS maintains a MAC FDB. (C)
Which of the following protocols is NOT used to build a routing table? - CORRECT
ANSWER LDP (A)
Which of the following statements about a CE router that is involved in a VPN service is
TRUE? - CORRECT ANSWER It connects to at least one PE router. (C)
Which of the following statements about a static route in a Nokia 7750 SR is FALSE? -
CORRECT ANSWER It changes dynamically if the topology changes. (C)
Which of the following statements about the OSPF routing protocol is TRUE? - CORRECT
ANSWER It uses the SPF algorithm for route selection. (B)
Which of the following about BGP is FALSE? - CORRECT ANSWER It is a link state
protocol. (A)
Which of the following statements about autonomous systems is FALSE? - CORRECT
ANSWER Private AS numbers are advertised on the Internet. (C)
Which address type is used to send frames to all devices in a Local Area Network? -
CORRECT ANSWER Broadcast (C)
Which of the following is NOT a characteristic of a hub? - CORRECT ANSWER It
inspects layer-2 frame headers. (C)
What is the function of an SAP? - CORRECT ANSWER It provides a CE device with
service access. (B)
QUESTIONS AND CORRECT ANSWERS
Consider the exhibit. An Ethernet Local Area Network (LAN) consists of the components
shown in the exhibit. How many broadcast and collision domains are on this LAN? -
CORRECT ANSWER 3 broadcast domains, 9 collision domains (D)
Consider the exhibit. When configuring a static route on router R2, what next hop address
should be used to reach a host on 192.168.1.0/27? - CORRECT ANSWER 10.2.3.3 (D)
Which of the following is the physical infrastructure that provides interconnections between
ISPs? - CORRECT ANSWER An Internet exchange point (B)
What information is part of the encapsulation done at the Link layer? - CORRECT
ANSWER Source and destination MAC addresses (A)
Which TCP/IP layer is responsible for path determination and end-to-end forwarding of
datagrams? - CORRECT ANSWER The Internet layer (C)
Which of the following shows a typical data packet flow when egressing a Nokia 7750 SR? -
CORRECT ANSWER SF/CPM > IOM > MDA > SFP (C)
Which of the following displays the hierarchical structure of the available CLI commands at
the current context level? - CORRECT ANSWER tree (C)
Which of the following is NOT a valid log destination in a Nokia 7750 SR? - CORRECT
ANSWER Main (A)
What operation is performed by an iLER when it receives a packet? - CORRECT
ANSWER It pushes a new MPLS label and forwards the packet to the next LSR. (A)
, Which of the following statements about the service label is FALSE? - CORRECT
ANSWER A P device performs a service label swap operation. (D)
Which of the following statements about VPWS is FALSE? - CORRECT
ANSWER Each VPWS maintains a MAC FDB. (C)
Which of the following protocols is NOT used to build a routing table? - CORRECT
ANSWER LDP (A)
Which of the following statements about a CE router that is involved in a VPN service is
TRUE? - CORRECT ANSWER It connects to at least one PE router. (C)
Which of the following statements about a static route in a Nokia 7750 SR is FALSE? -
CORRECT ANSWER It changes dynamically if the topology changes. (C)
Which of the following statements about the OSPF routing protocol is TRUE? - CORRECT
ANSWER It uses the SPF algorithm for route selection. (B)
Which of the following about BGP is FALSE? - CORRECT ANSWER It is a link state
protocol. (A)
Which of the following statements about autonomous systems is FALSE? - CORRECT
ANSWER Private AS numbers are advertised on the Internet. (C)
Which address type is used to send frames to all devices in a Local Area Network? -
CORRECT ANSWER Broadcast (C)
Which of the following is NOT a characteristic of a hub? - CORRECT ANSWER It
inspects layer-2 frame headers. (C)
What is the function of an SAP? - CORRECT ANSWER It provides a CE device with
service access. (B)
