### Question:
FramedIPAddressAttribute extends Attribute { public boolean isNasSelected() { return (addr[0] == (byte) 255) && (addr[1] == (byte) 255) && (addr[2] == (byte) 255) && (addr[3] == (byte) 254); } FramedIPAddressAttribute(Type type, int msb, int msb2, int msb3, int msb4);  FramedIPAddressAttribute(byte[] octets); boolean isUserNegotiated(); boolean isNasSelected(); boolean isSpecified(); byte[] getAddress(); String toStringImpl();  }### Answer:
@Test public void testIsNasSelected() { final FramedIPAddressAttribute a = new FramedIPAddressAttribute(FramedIPAddressAttribute.Type.NAS_ASSIGNED, 1, 2, 3, 4); Assert.assertFalse(a.isUserNegotiated()); Assert.assertTrue(a.isNasSelected()); Assert.assertFalse(a.isSpecified()); }