Juniper JN0-348 Online Practice Questions and Exam Preparation

Juniper JN0-348 Online Questions & Answers

• Question 61:

  Which two statements about DHCP snooping are correct? (Choose two.)

  A. DHCP snooping inspects all DHCP packets on untrusted ports.
  B. By default, the Junos OS treats access ports as trusted and trunk ports as untrusted.
  C. DHCP snooping uses ARP to add statically defined IP addresses to its database.
  D. The DHCP database maps IP addresses, MAC addresses, and the associated VLAN.
  A. DHCP snooping inspects all DHCP packets on untrusted ports.
  D. The DHCP database maps IP addresses, MAC addresses, and the associated VLAN.

• Question 62:

  

  Referring to the exhibit, which configuration will force traffic to always use ae0.0 as long as it is active?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 63:

  Which statement is correct about IS-IS link state PDUs?

  A. They are used to maintain link-state database synchronization.
  B. They are used to establish adjacencies.
  C. They are used to build the link-state database.
  D. They are used to determine whether the neighbors are Level 1 or Level 2.
  C. They are used to build the link-state database.

• Question 64:

  Which OSPF packet type is sent when an OSPF router detects its database is stale?

  A. database description
  B. link-state acknowledgment
  C. link-state request
  D. hello
  C. link-state request

• Question 65:

  Which device is used to separate collision domains?

  A. switch
  B. router
  C. hub
  D. firewall
  A. switch

• Question 66:

  Which two statements are correct regarding the root bridge election process when using STP? (Choose two.)

  A. A lower system MAC address is preferred.
  B. A higher bridge priority is preferred.
  C. A lower bridge priority is preferred.
  D. A higher system MAC address is preferred.
  A. A lower system MAC address is preferred.
  C. A lower bridge priority is preferred.

• Question 67:

  Click the Exhibit button.

  

  Referring to the exhibit, why is the route for 10.5.5.5 hidden?

  A. It is a martian route.
  B. It has an invalid community.
  C. It is an L3VPN route.
  D. The next hop cannot be resolved.
  D. The next hop cannot be resolved.

• Question 68:

  Which two port security features use the DHCP snooping database for additional port security? (Choose two.)

  A. dynamic ARP inspection
  B. MACsec
  C. IP Source Guard
  D. MAC learning
  A. dynamic ARP inspection
  C. IP Source Guard

• Question 69:

  Click the Exhibit button.

  

  Which statement is correct about the ISO NET address shown in the exhibit?

  A. The system identifier is 6800.1001.00
  B. The area identifier is 0001
  C. The authority and format identifier (AFI) is 00
  D. This is not a valid NET address
  B. The area identifier is 0001

• Question 70:

  Which statement about configuring persistent MAC learning is correct?

  A. Persistent MAC learning requires 802.1X authentication.
  B. Persistent MAC learning can be configured on access mode interfaces.
  C. Persistent MAC learning flushes dynamically learned MAC addresses on reboots.
  D. Persistent MAC learning cannot be configured on redundant trunk groups.
  B. Persistent MAC learning can be configured on access mode interfaces.