Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 161:

  A network administrator is configuring ACLs on a Cisco router, to allow traffic from hosts on networks 192.168.146.0, 192.168.147.0, 192.168.148.0, and 192.168.149.0 only. Which two ACL statements, when combined, would you use to accomplish this task? (Choose two.)

  A. access-list 10 permit ip 192.168.146.0 0.0.1.255
  B. access-list 10 permit ip 192.168.147.0 0.0.255.255
  C. access-list 10 permit ip 192.168.148.0 0.0.1.255
  D. access-list 10 permit ip 192.168.149.0 0.0.255.255
  E. access-list 10 permit ip 192.168.146.0 0.0.0.255
  F. access-list 10 permit ip 192.168.146.0 255.255.255.0
  A. access-list 10 permit ip 192.168.146.0 0.0.1.255
  C. access-list 10 permit ip 192.168.148.0 0.0.1.255

  ---

  "access-list 10 permit ip 192.168.146.0 0.0.1.255" would allow only the 192.168.146.0 and 192.168.147.0 networks, and "access-list 10 permit ip 192.168.148.0 0.0.1.255" would allow only the 192.168.148.0 and 192.168.149.0 networks.

• Question 162:

  At which layer of the OSI model does PPP perform?

  A. Layer 2
  B. Layer 3
  C. Layer 4
  D. Layer 5
  A. Layer 2

  ---

  The Point-to-Point Protocol (PPP) provides a standard method for transporting multi-protocol datagrams over point-to-point links. PPP was originally emerged as an encapsulation protocol for transporting IP traffic between two peers. It is a data link layer protocol (layer 2 in the OSI model)

• Question 163:

  DRAG DROP

  Drag the Cisco default administrative distance to the appropriate routing protocol or route. (Not all options are used.)

  Select and Place:

  

  

• Question 164:

  Which three commands can you use to set a router boot image? (Choose three.)

  A. Router(config)# boot system flash c4500-p-mz.121-20.bin
  B. Router(config)# boot system tftp c7300-js-mz.122-33.SB8a.bin
  C. Router(config)#boot system rom c7301-advipservicesk9-mz.124-24.T4.bin
  D. Router> boot flash:c180x-adventerprisek9-mz-124-6T.bin
  E. Router(config)#boot flash:c180x-adventerprisek9-mz-124-6T.bin
  F. Router(config)#boot bootldr bootflash:c4500-jk9s-mz.122-23f.bin
  A. Router(config)# boot system flash c4500-p-mz.121-20.bin
  B. Router(config)# boot system tftp c7300-js-mz.122-33.SB8a.bin
  C. Router(config)#boot system rom c7301-advipservicesk9-mz.124-24.T4.bin

• Question 165:

  Which command can you enter to configure a local username with an encrypted password and EXEC mode user privileges?

  A. Router(config)#username jdone privilege 1 password 7 08314D5D1A48
  B. Router(config)#username jdone privilege 1 password 7 PASSWORD1
  C. Router(config)#username jdone privilege 15 password 0 08314D5D1A48
  D. Router(config)#username jdone privilege 15 password 0 PASSWORD1
  A. Router(config)#username jdone privilege 1 password 7 08314D5D1A48

• Question 166:

  Which three features are added in SNMPv3 over SNMPv2?

  A. Message Integrity
  B. Compression
  C. Authentication
  D. Encryption
  E. Error Detection
  A. Message Integrity
  C. Authentication
  D. Encryption

  ---

  Cisco IOS software supports the following versions of SNMP:

  +

  SNMPv1 ?The Simple Network Management Protocol: A Full Internet Standard, defined in RFC 1157. (RFC 1157 replaces the earlier versions that were published as RFC 1067 and RFC 1098.) Security is based on community strings.

  +

  SNMPv2c ?The community-string based Administrative Framework for SNMPv2. SNMPv2c (the "c" stands for "community") is an Experimental Internet Protocol defined in RFC 1901, RFC 1905, and RFC 1906. SNMPv2c is an update of the protocol operations and data types of SNMPv2p (SNMPv2 Classic), and uses the community-based security model of SNMPv1.

  +

  SNMPv3 ?Version 3 of SNMP. SNMPv3 is an interoperable standards-based protocol defined in RFCs 2273 to 2275. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over the network. The security features provided in SNMPv3 are as follows:

  ?Message integrity: Ensuring that a packet has not been tampered with in transit.

  ?Authentication: Determining that the message is from a valid source.

  ?Encryption: Scrambling the contents of a packet prevent it from being learned by an unauthorized source.

• Question 167:

  DRAG DROP

  Refer to the exhibit. PC_1 is sending packets to the FTP server. Consider the packets as they leave RouterA interface Fa0/0 towards RouterB. Drag the correct frame and packet address to their place in the table.

  Select and Place:

  

  

• Question 168:

  Refer to the exhibit.

  

  Which statement is true?

  A. The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20.
  B. VLAN 20 is running the Per VLAN Spanning Tree Protocol.
  C. The MAC address of the root bridge is 0017.596d.1580.
  D. SwitchA is not the root bridge, because not all of the interface roles are designated.
  D. SwitchA is not the root bridge, because not all of the interface roles are designated.

  ---

  Only non-root bridge can have root port. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->.

  From the output we learn this switch is running Rapid STP, not PVST ->.

  0017.596d.1580 is the MAC address of this switch, not of the root bridge. The MAC address of the root bridge is 0017.596d.2a00 ->. All of the interface roles of the root bridge are designated. SwitchA has one Root port and 1 Alternative port

  so it is not the root bridge.

• Question 169:

  Which statements describe the routing protocol OSPF? (Choose three.)

  A. It supports VLSM.
  B. It is used to route between autonomous systems.
  C. It confines network instability to one area of the network.
  D. It increases routing overhead on the network.
  E. It allows extensive control of routing updates.
  F. It is simpler to configure than RIP v2.
  A. It supports VLSM.
  C. It confines network instability to one area of the network.
  E. It allows extensive control of routing updates.

  ---

  The OSPF protocol is based on link-state technology, which is a departure from the Bellman-Ford vector based algorithms used in traditional Internet routing protocols such as RIP. OSPF has introduced new concepts such as authentication

  of routing updates, Variable Length Subnet Masks (VLSM), route summarization, and so forth.

  OSPF uses flooding to exchange link-state updates between routers. Any change in routing information is flooded to all routers in the network. Areas are introduced to put a boundary on the explosion of link-state updates. Flooding and

  calculation of the Dijkstra algorithm on a router is limited to changes within an area.

• Question 170:

  In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three.)

  A. Unlike IPv4 headers, IPv6 headers have a fixed length.
  B. IPv6 uses an extension header instead of the IPv4 Fragmentation field.
  C. IPv6 headers eliminate the IPv4 Checksum field.
  D. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field.
  E. IPv6 headers use a smaller Option field size than IPv4 headers.
  F. IPv6 headers use a 4-bit TTL field, and IPv4 headers use an 8-bit TTL field.
  A. Unlike IPv4 headers, IPv6 headers have a fixed length.
  B. IPv6 uses an extension header instead of the IPv4 Fragmentation field.
  C. IPv6 headers eliminate the IPv4 Checksum field.